TRANSMITTER T3311, T3411

Transcription

1 TRANSMITTER T3311, T3411 Programmable relative humidity and temperature transmitter with serial output RS232 and RS485 With computing of dew point temperature, absolute humidity, specific humidity, mixing ratio and specific enthalpy Instruction Manual

2 Transmitter setting from the manufacturer... 3 Transmitter installation... 3 Dimensions... 4 Typical application wiring, connection of terminals... 5 Info mode... 6 Setting of transmitter, selection of communication protocol...6 Description of communication protocols... 8 Modbus RTU... 8 Supported functions... 8 Jumper and button... 8 Description of supported function (0x03): Reading of 16-bit registers (Read Holding Registers) (0x04): Reading 16-bit input gates (Read Input Registers) (0x10): Setting of several 16-bit registers (Write Multiple Registers)... 9 Exception Responses Exception codes Modbus CRC Procedure during calculation of Modbus CRC Modbus registers of the transmitter Example of communication Reading of temperature, address 0x Reading of relative humidity, address 0x Reading of computed value, address 0x Reading of all values at once, address block 0x0031 to 0x Protocol compatible with Advantech-ADAM standard Jumper General syntax of commands Description of supported functions Configuration of transmitter Response of the transmitter Check sum (CRC) Reading of the temperature Reading of humidity Reading of computed value Query to adjusted configuration Reading of device name Reading of firmware version Format of data Error states Communication protocol ARION - AMiT company Supported frames Supported function description Error States of the transmitter Error Error Error Error Readings on LCD display Technical parameters of the instrument: Measuring parameters: End of operation Technical support and service Appendix A Connection of ELO E06D converter (RS232/RS485) IE-SNC-T33(4)11-04

3 Instruction Manual for use of temperature and relative humidity transmitter: T3311 (RS232) T3411 (RS485) Transmitter is designed for measurement of ambient temperature and relative humidity of air without aggressive ingredients with computing one of the following values: dew point temperature, absolute humidity, specific humidity, mixing ratio and specific enthalpy. Please read instruction manual before the first transmitter connection. Transmitter T3311 communicates via link RS232, transmitter T3411 via link RS485. Supported communication protocols are Modbus RTU, protocol compatible with standard Advantech-ADAM and ARION. Temperature and relative humidity sensors are non-removable instrument parts. Measured and computed values are displayed on dual line LCD display. The first line displays temperature. Value displayed on the second line is selectable among relative humidity and computed value. It is also possible to display both readings with cyclic overwriting in 4 seconds interval. Display can be also switched OFF totally. Output link RS485 of transmitter T3411 is galvanic isolated. Output link RS232 of transmitter T3311 is NOT galvanic isolated. Setting of all transmitter parameters is enabled in accordance with procedure described in chapter Setting of transmitter, selection of communication protocol or by means of commands of selected communication protocol. For detailed description of features of protocols see chapter Description of communication protocols. Transmitter setting from the manufacturer If special setting was not required in the order transmitter is set from the manufacturer to the following parameters: communication protocol: transmitter address: communication speed: display: value displayed at lower line: preset computed value: Transmitter installation Modbus RTU 01H 9600Bd, without parity, 2 stop bits switched ON relative humidity only dew point temperature Transmitter is designed for wall mounting. There are two mounting holes at the sides of the case. It is NOT recommended to use the device for long time under condensation conditions. It could be the cause of water steam condensation inside the sensor s cover into water phase. This liquid phase stays inside sensor s cover and can t escape from the cover easily. It can dramatically increase response time to relative humidity change. If water condensation occurs for longer time it can cause sensor damage. Similar effect can occur under water aerosol conditions. Don t connect transmitter while power supply voltage is on. Interconnection terminals are accessible after unscrewing four screws and removing the lid. Lace the cable through a gland at the case wall. Connect the cable to terminals with respecting the signal polarity (see figure). Terminals are selfclamping and can be opened by a suitable screwdriver. For the opening, insert the screwdriver to smaller terminal hole and lever by him. Do not forget to tighten glands and case lid with inserted packing after cables connecting. It is necessary for warranting of protection IP65. Working position is with the bronze filter downwards see figure. Transmitter T3311 is supplied with connection cable equipped with connector for connection to RS232 interface. For T3411 transmitter (RS485) it is recommended to use shielded twisted copper cable (e.g. SYKFY). Outside diameter of the cable must be from 3 to 6.5 mm, maximal length 1200m. The cable must be located at indoor rooms. IE-SNC-T33(4)

4 Nominal cable impedance should be 100 Ω, loop resistance max. 240 Ω, cable capacity max. 65 pf/m. Suitable cable is e.g. SYKFY 2x2x0,5 mm 2, where one wire pair serves for transmitter powering and the other pair for communication link. The cable should be led in one line, i.e. NOT to tree or star. Termination resistor should be located at the end. For short distance other topology is allowed. Terminate the network by a termination resistor. The value of the resistor is recommended about 120 Ω. For short distance termination resistor can be left out. The cable should not be led in parallel along power cabling. Safety distance is up to 0.5 m, otherwise undesirable induction of interference signals can appear. Dimensions T3311 RS232 T3411 RS485 4 IE-SNC-T33(4)11-04

5 Typical application wiring, connection of terminals T3311 power from communication port T3311 power from external voltage source T3411 RS485 IE-SNC-T33(4)

6 Info mode If in doubt of setting of installed transmitter, verification of its address is enabled even without using computer. Power should be connected. Unscrew transmitter cover and shortly press button next to connection terminals (jumper should be opened). Actual adjusted address of transmitter is displayed on LCD display at decimal base. Next press of button exits info mode and actual measured values are displayed. Note: No measurement and communication is possible during info mode. If transmitter stays in info mode for longer than 15 s, transmitter automatically returns to measuring cycle. Setting of transmitter, selection of communication protocol Each new setting of transmitter parameters is stored in its internal memory 1. If modification of transmitter setting is needed (communication protocol, its parameters, setting of LCD display), it is recommended to use of User s software available at (providing all settings of transmitter parameters) or proceed in following way (support basic setting): Connect transmitter with PC, for T3411 (RS485) use converter RS485/RS232. Run program HyperTerminal on your computer it is a part of Windows operating system (Start Program Files Accessory Communication HyperTerminal) and set transmission parameters. I.e. enter name of new connection (e.g. Transmitter), press button OK, window Connect appears. In field Connect by means of select COM port, which transmitter is connected to (e.g. COM1) and press OK. In following window COM1 Features enter to field: Bits per second 9600 Data bits 8 Parity None Number of stop-bits 1 Flow control None Continue by pressing OK. 1 During writing to transmitter memory no power failure should appear! Such failure can cause damage of other settings stored in the transmitter! 6 IE-SNC-T33(4)11-04

7 Select item File, Features in menu. Select bookmark Setup, in the window, click on ASCII Setup... and modify all items in accordance with following figure and press OK Unscrew 4 screws of transmitter cover and remove it. Plug in jumper. Keep the button inside the transmitter pressed, only now you can connect power voltage and then release the button. If transmitter is powered directly from PC communication port (for interface RS232), it is necessary first to disconnect communication cable, then to keep the button pressed, to connect communication cable (and also power) and only now release the button. LCD display of the transmitter displays PC. Running HyperTerminal displays main menu. IE-SNC-T33(4)

8 Select required items to set the transmitter: 0 Displays actual setting of the transmitter 1 Selection of communication protocol and setting of its parameters (transmitter address, communication speed ). For entering numeric values use digits 0 to 9 and characters A to F (upper case letters), transmitter address is entered always as two digits hexadecimal number (no decimal, e.g. address 11 i.e. Bh must be entered as 0B). 2 Setting of LCD display of the transmitter (display switched ON/ switched OFF, selection of displayed values) 8 Setting communication to default value from manufacturer (Modbus, address 01h, 9600 Bd) 9 End of setting All changes in setting are continuously stored automatically. If needed close transmitter again with cover. Description of communication protocols To change communication protocol use User s software or proceed in accordance with chapter Setting of transmitter, selection of communication protocol Note: After switching ON the power of the transmitter it can last up to 2 s before the transmitter starts to communicate and measure! Modbus RTU Control units communicate on master-slave principle in half-duplex operation. Only master can send request and only addressed device responds. During sending of request no other slave station should respond. During communication, data transfer proceeds in binary format. Each Byte is sent as eight bit data word in format: 1 start bit, data word 8 bit (LSB first), 2 stop bits 2, without parity. Transmitter supports communication speed from 110Bd to Bd. Sent request and response have syntax: ADDRESS OF DEVICE FUNCTION Modbus CRC Supported functions 03 (0x03): Reading of 16-bit registers (Read Holding Registers) 04 (0x04): Reading of 16-bit input gates (Read Input Registers) 16 (0x10): Setting of more 16-bit registers (Write Multiple Registers)* 3 Jumper and button Jumper and button are located next to connection terminals. If communication protocol Modbus is selected the function of jumper and button is as follows: Jumper opened transmitter memory is protected from writing, from transmitter side it is only enabled to read measured value, writing to memory is disabled (no change of transmitter address, communication speed and LCD setting is enabled) Jumper closed writing to transmitter memory is enabled by means of User s software or function 16 (0x10): Setting of several 16-bit registers (Write Multiple Registers) Jumper closed and button pressed for longer than three seconds causes restoring of manufacturer setting of communication protocol, i.e. sets transmitter address to 01h and communication speed to 9600Bd 2 Transmitter sends two stop bits, for receive one stop bit is enough. 3 See detailed description of this function. 8 IE-SNC-T33(4)11-04

9 Jumper opened and button shortly pressed transmitter goes to Info mode, see chapter Info mode Description of supported function 03 (0x03): Reading of 16-bit registers (Read Holding Registers) Function serves for reading of values from transmitter. Addresses of available registers are listed in chapter Modbus registers of the transmitter on page 13. Request: FUNCTION Function code 0x DATA Initial address Hi 0x?? Initial address Lo 0x?? Number of registers Hi 0x?? Number of registers Lo 0x?? Response: FUNCTION Function code 0x DATA Number of Bytes 0x?? States of register Hi 0x?? States of register Lo 0x??... States of register Hi 0x?? States of register Lo 0x?? Exceptional response: FUNCTION Function code 0x DATA Exception code 0x?? During sending of query to transmitter initial register address and number of registers to read are sent. Register addresses are indexed from zero register 0x2001 se physically sent as value 0x2000, 0x2002 as 0x2001 ) 04 (0x04): Reading 16-bit input gates (Read Input Registers) This function is also possible to use for reading values from transmitter, syntax is the same as with function 03 (0x03): Reading of 16-bit registers. Addresses of available registers are specified in chapter Modbus registers of the transmitter on page (0x10): Setting of several 16-bit registers (Write Multiple Registers) Setting of transmitter address and communication speed is possible to perform by writing to transmitter registers. Attention! During writing to transmitter registers it is not enabled to write any number of registers. Always below procedure should be strictly followed. If procedure is not followed undoable loss of IE-SNC-T33(4)

10 important settings stored in transmitter can occur! It is strongly recommended to use User s software to set all transmitter s parameters or use procedure described in chapter Setting of transmitter, selection of communication protocol for transmitter setting instead. Request: FUNCTION Function code 0x DATA Initial address Hi 0x?? Initial address Lo 0x?? Number of registers Hi 0x?? Number of registers Lo 0x?? Number of Bytes 0x?? (of sent data) Response: FUNCTION Function code 0x DATA Initial address Hi 0x?? Initial address Lo 0x?? Number of registers Hi 0x?? Number of registers Lo 0x?? Exceptional response: FUNCTION Function code 0x DATA Exception code 0x?? Procedure during writing to transmitter registers: transmitter address is stored at Modbus address 0x2001 as binary number code of communication speed is stored at Modbus address 0x2002 Communication speed [Bd] Code of communication speed [hex] F D 600 1B4F DA D A B DA D B IE-SNC-T33(4)11-04

11 1. Close jumper located next to connection terminals of the transmitter. 2. Read entire area 0x2001 to 0x2040 to master device. At address 0x2040 check sum of entire area is stored. It is calculated as sum of 16bit values from addresses 0x2001 to 0x2039. Stored are lowest 16 bits of this sum - enables to check correct reading of the area. 3. Modify content corresponding to addresses 0x2001 and 0x2002 in master device as required. Setting of other values should not be changed! 4. Calculate new check sum of entire area, i.e. sum of 16bit values corresponding to values at addresses 0x2001 to 0x2039 and store lowest 16 bits to position corresponding to address 0x Write such modified area together from master device to addresses 0x2001 to 0x Open jumper. Example: Transmitter with address 01h, communication speed 9600Bd, to change to address 9Fh and Bd For data area reading the following is sent via link: F FA 01 transmitter address 03 command for reading of 16-bit registers initial address (sent address is indexed from zero, during Modbus request for reading of address 0x2001 physically is sent 0x2000 via link) read 64 registers (0x40), i.e. 128 Byte 4F FA CRC of Modbus response of the transmitter is: B B 4B 77 D3 BD A AA A8 D0 57 7E 5F 94 F3 DC E DD 78 0C 40 AA 77 D3 F2 C F5 F3 EC ED BF 77 D5 4F D8 FF FF FF FF 40 DE 77 D3 2E F7 78 0C 06 5C F3 DC F 53 2D 2C 8C 01 transmitter address 03 code of command (reading 16-bit registers) 80 number of Bytes of response (0x80, i.e. 128 Byte) address content 0x2001, i.e. original address of transmitter 01h 01 B5 address content 0x2002, i.e. code of corresponding communication speed 9600Bd 53 2D check sum of entire area 0x2001 to 0x2039 ( B F = 0x532D) 2C 8C CRC of Modbus Modification of data from read area: 00 9F B 4B 77 D3 BD A AA A8 D0 57 7E 5F 94 F3 DC E DD 78 0C 40 AA 77 D3 F2 C F5 F3 EC ED BF 77 D5 4F D8 FF FF FF FF 40 DE 77 D3 2E F7 78 0C 06 5C F3 DC F 52 3A 00 9F new address of the transmitter (original address was 00 01) new code of corresponding communication speed Bd (original was 01B5) 52 3A new check sum of entire area (009F F = 0x523A) Write such modified area together from master device to the transmitter, area 0x2001 to 0x2040 IE-SNC-T33(4)

12 F B 4B 77 D3 BD A AA A8 D0 57 7E 5F 94 F3 DC E DD 78 0C 40 AA 77 D3 F2 C F5 F3 EC ED BF 77 D5 4F D8 FF FF FF FF 40 DE 77 D3 2E F7 78 0C 06 5C F3 DC F 52 3A original transmitter address is still valid, i.e. 01h 10 code of command, setting more 16-bit registers initial address number of write registers 80 number of Bytes of sent data CRC of Modbus After successful writing to the transmitter, transmitter responds: CA 39 (still with old address at original communication speed) and after response it sets to new values. In case of different number of data or incorrect check sum of the entire area writing to transmitter is not performed. Exception Responses After sending query to the transmitter, master device waits for normal response. After master device query one of the following events can occur: 1. If transmitter receives a query without communication error and query is possible to process, master device receives response. 2. If transmitter does not receive all queries due to communication error, no response is sent. Main program is able to process condition of exceeding of time for query. 3. If transmitter receives a query, but detects communication error (CRC), no response is sent. Main program is able to process condition of exceeding of time for query. 4. If transmitter receives a query without communication error, but cannot process it, master device receives exception response, which informs master device on error nature. Exception Response - has two fields to distinguish it from normal response: 1. Function code field 2. Data field. ad1 Function code field In normal response of slave device function code of original query corresponds to function code of response. All function codes have most significant bit (MSB) equal to 0. In exception response slave device sets most significant bit of function code to 1. Main station recognizes exception response by means of this bit and can check data field for exception code. ad2 Data field In exception response transmitter returns exception code in data field. Event causing exception is determined this way. Exception codes 0x01 Invalid function. Function code in query is not allowed action for transmitter. 0x02 Invalid data address. Data address received in query is not allowed address for transmitter. Modbus CRC Check sums of entire Modbus messages are mostly automatically inserted to the end of request by communication programs themselves. In case there is a need to insert to generate Modbus CRC to program itself, the way of calculation is as follows: 12 IE-SNC-T33(4)11-04

13 Procedure during calculation of Modbus CRC 1. To fill 16-bit register with value 0xFFFF (all bits set to 1). Let us call this register CRC register. 2. Perform logic function Exclusive OR with first eight bit message Byte with lower eight bits of CRC register. Store result to CRC register. 3. Shift content of CRC register of one bit to the right (towards to LSB), enter 0 as upper bit of CRC. Memorize values of lowest shifted bit (LSB). 4. If LSB was 0, then repeat step 3 (other shift). If LSB was 1, then perform Exclusive OR CRC register with value 0xA Repeat steps 3 and 4 as long as eight shifts proceed. After eight shifts eight bit Byte is processed. 6. Repeat steps 2 to 5 to the next of eight bit Byte of message as long as all Bytes are proceeded. 7. In the end after processing of all message Bytes check sum value is stored in CRC register. 8. During connection of check sum to the message lower Byte of CRC register is sent as first, then upper Byte of CRC register. Modbus registers of the transmitter Variable Unit Address Format Size Status Measured temperature [ C] 0x0031 Int*10 BIN16 R Measured relative humidity [%] 0x0032 Int*10 BIN16 R Computed value * [ C] 0x0033 Int*10 BIN16 R Address of transmitter [-] 0x2001 Int BIN16 R/W* Code of communication speed [-] 0x2002 Int BIN16 R/W* Serial number of transmitter Hi [-] 0x1035 BCD BIN16 R Serial number of transmitter Lo [-] 0x1036 BCD BIN16 R Version of Firmware Hi [-] 0x3001 BCD BIN16 R Version of Firmware Lo [-] 0x3002 BCD BIN16 R Explanation: * to choice of computed value type use User s software Int*10 register is in format integer*10 R register is designed only for reading W* register is designed for writing, for details see description function 16 (0x10): Setting of several 16-bit registers (Write Multiple Registers) Note: In case there is a need for reading of measured values from transmitter with higher resolution than one decimal, measured values in transmitter are stored also in Float format, which is not directly compatible with IEEE754. Example of communication In all examples communication with transmitter at address 01h is supposed Reading of temperature, address 0x0031 Modbus command: address transmitter: 01 reading 16-bit registers 03 initial address Hi 00 initial address Lo 31 number read registers Hi 00 number read registers Lo 01 Via link is physically sent: IE-SNC-T33(4)

14 Received response from transmitter: F4 B9 C3 address transmitter: 01 reading 16-bit registers 03 Number Byte 02 State of register Hi 00 State of register Lo F4 (0x00F4 = 244 = 24.4 C) Modbus CRC Lo B9 Modbus CRC Hi C3 Reading of relative humidity, address 0x0032 Modbus command: address transmitter: 01 reading 16-bit registers 03 initial address Hi 00 initial address Lo 32 number read registers Hi 00 number read registers Lo 01 Via link is physically sent: D5 C5 Received response from transmitter: C B9 F9 address transmitter: 01 reading 16-bit registers 03 Number Byte 02 State of register Hi 01 State of register Lo 6C (0x016C = 364 = 36.4 %RH) Modbus CRC Lo B9 Modbus CRC Hi F9 Reading of computed value, address 0x0033 Modbus command: address transmitter: 01 reading 16-bit registers 03 initial address Hi 00 initial address Lo 33 number read registers Hi 00 number read registers Lo 01 Via link is physically sent: C5 Received response from transmitter: FF 3E address transmitter: 01 reading 16-bit registers 03 Number Byte 02 State of register Hi FF State of register Lo 3E (0xFF3E = -194 = -19.4) Modbus CRC Lo 78 Modbus CRC Hi 64 Reading of all values at once, address block 0x0031 to 0x0033 Modbus command: address transmitter: 01 reading 16-bit registers 03 initial address Hi IE-SNC-T33(4)11-04

15 initial address Lo 31 number read registers Hi 00 number read registers Lo 03 Via link is physically sent: C4 Received response from transmitter: FF C FF 38 C5 71 transmitter address: 01 reading 16-bit registers 03 Number Byte 06 State of register Hi FF State of register Lo C4 (0xFFC4 = -60 = -6.0 C) State of register Hi 01 State of register Lo 14 (0x0114 = 276 = 27.6 %RH) State of register Hi FF State of register Lo 38 (0xFF38 = -200 = C)* Modbus CRC Lo C5 Modbus CRC Hi 71 * Computed value is preset by factory to Dew Point Temperature, to choice use User s software Protocol compatible with Advantech-ADAM standard Control units communicate on master-slave principle in half-duplex operation. Only master can send requests and only addressed device responds. During sending request any of slave devices should respond. During communication data is transferred in ASCII format (in characters). Each Byte is sent as two ASCII characters (value 0x2F is sent as pair of characters 0x32, 0x46, i.e. characters 2 and F ). All commands and values MUST be entered in CAPITAL LETTERS! Transmitter supports communication speed from 1200Bd to Bd, parameters of communication link are 1 start bit + eight bit data word (LSB first) + 1 stop bit, without parity. Jumper Jumper is located next to connection terminals. If communication protocol compatible with standard Advantech-ADAM is selected, its function is the following: If jumper during switching ON the power is closed, transmitter always communicates with following parameters regardless stored setting in the transmitter: communication speed 9600 Bd, without check sum, transmitter address 00h If jumper during switching ON the power is not closed, transmitter communicates in accordance with stored setting. If jumper is closed during transmitter operation, transmitter temporarily changes its address to 00h, it will communicate in the same communication speed as before closing jumper and will communicate without check sum. After jumper is opened setting of address and check sum is reset in accordance with values stored in transmitter. Communication speed and check sum are possible to change only if jumper is closed (see chapter Configuration of transmitter). General syntax of commands [distinguishing character][device address][command][data][check sum][cr] Valid distinguishing characters towards to device are: $, #, % Device address contents 2 ascii bytes in hexadecimal code (upper case letters) representing one byte of binary address (e.g. 3 F corresponds to address 3Fh, i.e. 63, is sent as 0x33, 0x46) Check sum: enabled to switch ON/switch OFF CR... 1 byte (0Dh) IE-SNC-T33(4)

16 Description of supported functions Configuration of transmitter Syntax of command: %AANNTTCCFF cr Meaning of symbols: AA current address of transmitter 00 FF (hexadecimal) NN new address of transmitter 00 FF (hexadecimal) TT code of transmitter (2Ch combined transmitter of temperature and humidity) CC... code of communication speed Code speed [Bd] A FF data format and check sum: D7 D6 D5 D4 D3 D2 D1 D0 xxxx xx00 format "Engineering units" x0xx xx00 check sum switched OFF x1xx xx00 check sum switched ON Communication speed and check sum are possible to change only if jumper is closed o Change in communication speed activates only after transmitter power is switched OFF and switched ON again. o Change in setting of check sum activates immediately after jumper is opened If address is changing o and jumper is closed, transmitter responds with address 00h again, and newly set address will be activated after jumper is opened. o and jumper is not closed, change is activated immediately. If attempt occurs to write incorrect data to the transmitter (and syntax is correct), transmitter responds with error message. Response of the transmitter 1. If syntax of command is not correct, transmitter does not respond at all (e.g. no check sum is received though it is switched ON, check sum is not correct, string is not complete or contents invalid character). 2. If syntax is correct, but required operation is not correct, transmitter returns error message in format? AA cr this state appears if we try to change communication speed and check sum and jumper is not closed. 3. If command is executed, transmitter responds:! AA cr Check sum (CRC): it is the sum of all characters before it, its lowest byte is applied. Reading of the temperature Syntax command: #AA0 cr Response: > (temperature) cr (e.g. > cr) Reading of humidity Syntax command: #AA1 cr Response: > (humidity) cr (e.g. > cr) 16 IE-SNC-T33(4)11-04

17 Reading of computed value Syntax command: #AA2 cr Response: > (computed value) cr (e.g. > cr) Query to adjusted configuration Syntax command: $AA2 cr Response:!AATTCCFF cr symbols correspond with paragraph "Configuration of transmitter" Reading of device name Syntax command: $AAM cr Response:!AAT3311 cr or!aat3411 cr (accordingly with transmitter model) Reading of firmware version Syntax command: $AAF cr Response:!AA(version) cr reads version number of transmitter firmware Example 1: Change of transmitter address during operation (without closed jumper, CRC switched OFF) Transmitter, which had address 23h is configured to address 24h, speed 9600 Bd, without CRC, setting of communication speed and CRC must not change (setting of communication speed and CRC is not possible to change without closed jumper). Command: %23242C0600 cr Response:!24 cr Example 2: Reading of temperature from transmitter without closed jumper, transmitter address 01h, without check sum. Command: #010 cr Response: > cr with check sum: Command: #010 B4 cr where it is sent: D calculation of CRC: 23h+30h+31h+30h = B4h, then CRC = B4h, it is sent as 0x42, 0x34 Response: > E cr where it is sent: 3E 2B E D calculation of CRC: 3Eh+2Bh+30h+32h+30h+2Eh+35h+30h=18Eh then CRC = 8Eh, then it is sent as 0x38, 0x45 Example 3: Setting of transmitter to address 9F, communication speed remains 9600 Bd, check sums are switched ON (jumper should be closed because setting of CRC will be changed): - with jumper, transmitter always reports from address 00 without CRC Command: %009F2C0640 cr Response:!00 After jumper is opened transmitter address changes to 9Fh IE-SNC-T33(4)

18 Format of data Transmitter uses data format Engineering units, i.e. fixed decimal point. Temperature, humidity and computed value are displayed with 2 digits behind decimal point, second digit behind decimal point is always zero General writing: >±xxx.x0 cr Examples: > cr > cr > cr Error states >-0000 cr lower limit of temperature, error in measurement of humidity and computed value >+9999 cr upper limit of temperature, error in measurement of humidity and computed value Communication protocol ARION - AMiT company The device supports communication protocol ARION version 1.00, simplex and half duplex modes and communication speeds 9600, 19200, and Baud. Supported frames 0x20 ACK 0x21 NAK 0x22 STRQ (Resp.req. must be 1) 0x23 STT 0x24 MODE 0x26 VRRQ (Resp.req. must be 1) 0x27 VER 0x28 IDRQ (Resp.req. must be 1) 0x29 MID 0x2A FTRQ (Resp.req. must be 1) 0x2B FTL 0x2C CLRQ (Resp.req. must be 1) 0x2D CLS 0x30 DTRQ (Resp.req. must be 1) 0x56 data 0x58 data 0x80+Address+Response Request 0x80 Stop Positive response Negative response Status request Slave status, mode, guard time Set Mode Request for firmware and protocol version Response of firmware and protocol version Module identification request Module identification Request for list of supported frames List of supported frames Request for class of module Class of module Data request 24 analog values by14 bit 8 analog values by 21 bit Start of frame End of frame 18 IE-SNC-T33(4)11-04

19 Supported function description 0x24 MODE Set mode Device supports next modes: 0x00, 0x01 Simplex 0x02, 0x03 Half Duplex over RS232, RS485 line Lost of connection detection (Guard time) is always set to zero, it means lost of connection is not detected, guard time value sent by command is not important, it is not checked. 0x56 24 analog values by 14 bit: The values are sent in data sequence: temperature, relative humidity, computed value 4, the rest values are always zero. Range of all values is restricted from to Right values are into range from to , limit values are reserved for over range or error states indication, where = Error2, = Error1 (see chapter Error States of the transmitter). Application setup follow: Range 8192 ElMin ElMax 8191 PhysMin PhysMax x58 8 analog values by 21 bit: Similarly as 0x56, range of values is from to , where limit values are reserved for over range or error states indication. For detailed protocol description see ARION protocol description at If necessary, change of device setup (address, communication speed) is possible by steps described in chapter Setting of transmitter, selection of communication protocol. Actual adjusted address of device is available by press of button next to connection terminals (jumper should be opened). Then device displays its address on LCD display at decimal base. Next press of button exits this mode and actual measured values are displayed. While address shown, device don t communicate. Error States of the transmitter Transmitter continuously checks its state during operation. In case error is found LCD displays corresponding error code: Error 0 First line displays Err0. Error of check sum CRC of stored setting in transmitter memory. This error appears if writing procedure to transmitter memory is not correct, if writing to other address than allowed, optionally if damage of calibration data appeared. At this state transmitter does not measure and calculate values. It is the serious error, contact distributor of the instrument to fix. Error 1 Measured (calculated) value is over upper limit of allowed full scale range. There is a reading Err1 on LCD display. Value read from the transmitter is +999,9. This state appears in case of: Measured temperature is higher than approximately 600 C (i.e. high non-measurable resistance of temperature sensor, probably opened circuit). 4 Selection of computed value type is provided by User s Software IE-SNC-T33(4)

20 Relative humidity is higher than 100%, i.e. damaged humidity sensor, or humidity calculation of humidity is not possible (due to error during temperature measurement) Computed value calculation of the value is not possible (error during measurement of temperature or relative humidity or value is over range) Check connection of measuring sensors. Error 2 There is a reading Err2 on LCD display. Measured (calculated) value is below lower limit of allowed full scale range. Value read from the transmitter is -999,9. This state appears in case of: Measured temperature is lower than approximately -210 C (i.e. low resistance of temperature sensor, probably short circuit). Relative humidity is lower than 0%, i.e. damaged sensor for measurement of relative humidity, or calculation of humidity is not possible (due to error during temperature measurement) Computed value calculation of computed value is not possible (error during measurement of temperature or relative humidity) Check connection of measuring sensors. Error 3 There is a reading Err3 on LCD display upper line. Error of internal A/D converter appeared (converter doe not respond, probably damage of A/D converter). No measurement and calculations of values are proceeded. It is a serious error, contact distributor of the instrument. Readings on LCD display C Reading next to this symbol is measured temperature or error state of value. %RH Reading next to this symbol is measured relative humidity or error state of value. C DP Reading next to this symbol is calculated dew point temperature or error state of value. first left arrow Is on if jumper is closed. second left arrow Is on if button is pressed. On LCD display is shown the value with corresponding unit for temperature, relative humidity and dew point temperature. For rest values is shown only number (without corresponding unit). 20 IE-SNC-T33(4)11-04

21 Technical parameters of the instrument: Measuring parameters: Ambient temperature (RTD sensor Pt1000/3850ppm): Measuring range: -30 to +80 C Resolution of display: 0.1 C Accuracy: ± 0.4 C Relative humidity (reading is temperature compensated at entire temperature range): Measuring range: 0 to 100 %RH (see Transmitter installation) Resolution display: 0.1 %RH Accuracy: ± 2.5 %RH from 5 to 95 %RH at 23 C The value computed from ambient temperature and relative humidity: Display resolution: 0,1 C You can choice one of the next value: Dew point temperature Accuracy: ±1,5 C at ambient temperature T < 25 C and RH >30% Range: -60 to +80 C Absolute humidity Accuracy: ±3g/m 3 at ambient temperature T < 40 C Range: 0 to 400 g/m 3 Specific humidity 5 Accuracy: ±2g/kg at ambient temperature T < 35 C Range: 0 to 550 g/kg Mixing ratio 5 Accuracy: ±2g/kg at ambient temperature T < 35 C Range: 0 to 995 g/kg Specific enthalpy 5 Accuracy: ± 3kJ/kg at ambient temperature T < 25 C Range: 0 to 995 kj/kg 6 Response time with bronze sensor cover (air flow approximately 1 m/s): temperature: t90 < 9 min (temperature step 20 C) relative humidity: t90 < 30 s (humidity step 65 %RH, constant temperature) Recommended calibration interval: 1 year Measuring interval and LCD display refresh: 0.5 s Power: 9 to 30 V dc, maximum ripple 0.5 % Consumption: max. 0.5W Protection of the case with electronics and terminals: IP65 Protection of the sintered bronze sensor cover: IP40 Filtering ability of the sintered bronze sensor cover: mm 5 This value depends on the atmospheric pressure. For computing is used constant value stored inside device memory. Default value preset by manufacturer is 1013hPa and can be changed by user s software. 6 This maximum is reached under conditions about 70 C/100%RH or 80 C/70%RH IE-SNC-T33(4)

22 Operating conditions: Operating temperature range: -30 to +80 C, over +70 C switch LCD display off Operating relative humidity range: 0 to 100 %RH Outer influence in accordance with EN : normal environment with those specifications: AE1, AN1, AR1, BE1 Working position: with sensor cover downwards Electromagnetic compatibility: complies EN Not allowed manipulation It is not allowed to operate the device under conditions other than specified in technical parameters. Devices are not designed for locations with chemically aggressive environment. Temperature and humidity sensors must not be exposed to direct contact with water or other liquids. It is not allowed to remove the sensor cover to avoid any mechanical damage of the sensors. Storing conditions: temperature -30 to +80 C, humidity 0 to 100 %RH without condensation Dimensions: case with electronics 89 x 73 x 37 mm, length of stem 75 mm Weight: approximately 175 g Material of the case: ABS End of operation Device itself (after its life) is necessary to liquidate ecologically! Technical support and service Technical support and service provides distributor. For contact see warranty certificate. 22 IE-SNC-T33(4)11-04

23 Appendix A Connection of ELO E06D converter (RS232/RS485) (optionally accessory of the transmitter T3411) The ELO E06D converter is an optional accessory for connection of transmitter/transmitters with RS485 interface to the PC via serial port RS232. Connect connector marked RS232 directly to the PC, connect power to connector marked RS485. Power voltage +6V DC from an external acdc adapter connect to pin 9, 0V connect to pin 5. Also mutually connect pin 2 and pin 7. Link RS485 is connected across pin 3 (A+) and pin 4 (B-). IE-SNC-T33(4)