Control Units for the Vibratory Feeder Industry

Transcription

1 REOVIB MFS 268-RS232 Appendix Interface Programming REO-USA, Inc 845 E 47th Street Indianapolis, IN USA Phone +1 (317) Fax +1 (317) info@reo-usa.com 46/214REOVIB 268_RS232_ANL_EN.doc Control Units for the Vibratory Feeder Industry

2 Contents 1. General Serial Interface Data Serial Interface Modes Normal operation Transmission to the controller Response from controller Parameter operation Parameter address and value formatting Send Write enable Receive, confirm write enable Send Parameter Remove Write Enable Read Parameter (send) Bit Configured Parameter Parameter Table Example of serial interface communication with frequency controller REOVIB MFS Normal Operation Parameter Operation RESET of Controller Dimension Dimension 6 A unit Dimension 16 A unit

3 Operating Instructions 1. General The REOVIB MFS 268 range of controllers for vibratory feeders can be operated from an RS 232 interface. To do this the frequency controller must be set up to receive serial data, using Menu C 17 (S.I.F. = I ). The set point for feeder throughput is adjusted in Running Mode and the controller status (ready/fault) is transmitted back. The controller can be configured, using the serial interface, in a further Parameter Mode. Units are available in two versions, panel mounting or enclosed P P P MFS F P The interface allows communication with the frequency controller by using 3 data words (each having 16 bits). Controllers are always factory configured for interface operation. Should the unit be required for manual set-up then the Parameter S.I.F. must be set = in Menu C 17. To return to serial interface operation S.I.F. must be reset = 1. The communication on the interface must be maintained continuously (repeat data string constant), otherwise the controller gets turned off by an internal watch dog after about 2 seconds. 2. Serial Interface Data The Parameters for serial interface are set as follows:- Baud rate: 96, 8 Data bits, 1 Stop bit, No Parity, No Handshaking (DTR = +12V, RTS = - 12 V) Pin layout PIN Nr. Signal 1-2 RXD 3 TXD 4-5 GND

4 The serial interface information is sent as a character string that is closed with a RETURN (CR) for synchronization. Within the string there are three used data words each having four characters (Bytes). The complete data string therefore comprises 3 x characters. Each part character string of the data word is the hexadecimal code equivalent of the 16 bit integer expression of the used data. Only upper case characters "" to "9" and "A" to "F" are permitted. Each character is transmitted with 8 bits represented by ASCII code. Each part of the string contains four characters and if necessary a leading zero is used. The value range of the used information is depicted in a different manner to the value range of the internal data format (16 bit integer). To differentiate, the values and the bit coded status information are relative or absolute, signed or unsigned and limited or unlimited. Type Signed Limiting Example Value range Form Relative Not signed Limited Set point, (..1)% (..FFFF) Setting range Relative Not signed Unlimited Effective value (..2)% (..FFFF) Relative Signed Limited Regulation range, phase position (-1..1)% (8..7FFF) Absolute Not signed Limited Time, frequency Individual Individually scaled bit Status True, false (..FFFF) The character string is controlled by the RETURN s for the correct length and existence and so invalid information is disregarded. The watchdog switches the set point to zero if non valid information is received.! The string to be sent must be repeated continuously! Example: Adjust set point to 7 % and enable ON. RS 232 Character String: "B3324"+CR 3. Serial Interface Modes When serial inteface communication is used there are two basic operating modes:- Normal operation: Control of the frequency controller in a production process. In this mode the set point and control signals (On/Off) are transmitted.. Parameter operation: Setting of the frequency controller to the required operating mode and limits. In a special mode the parameters and their addresses are sent to the frequency controller and are received back as confirmation In parameter mode, specific controller values such as frequency, soft start, time delays, contactor etc. are adjusted. 4

5 3.1 Normal operation In normal operation the serial interface is used to adjust the set point for the feeder throughput and the digital control signals e.g. the enable. The unit status (ready or fault) is reported. All data words are in the range..ffff H. The communications words are shown in bit form as follows Transmission to the controller H-Byte L-Byte Wort Set point 1, 16-Bit 1 % = FFFF H H-Byte L-Byte Wort Reserved H-Byte L-Byte Wort Control word Mode bit Enable Bit = 1 = Function ON All non used bits must be Control information (unit specific) = Normal operation 1 = Parameter operation Enable bit Response from controller H-Byte L-Byte Word Vibration acceleration feedback 16 Bit 1% = 8H Feedback output current 16 Bit 1% = 8H (% of rated current) H-Byte L-Byte Word Status word Fault code A5 (H) 57 (H) 58 (H) 2 (H) C (H) 5 (H) 7 (H) C (H) Unit not responding Ready ERROR Peak ERROR OC ERROR OL ERROR ACC ERROR OU Over temperature Feedback Parameter mode X X X OFF X Status information Unit specific X X X OFF bit Report X = not defined Bit = 1 = Function ON The unit status and the output current is reported. 5

6 3.2 Parameter operation The unit specific parameters can be read and changed in Parameter Operation. Before writing parameters a write enable must be sent. Then it is possible to change a single or several parameters. On closing the write enable must be removed. A read request only is required for reading The response value of Word 3 is always CDE H. This is used by the controller to indicate that it is running in parameter mode Parameter address and value formatting In parameter operation the most significant bit in Word 1 defines the read/write (R/W) bit (1 = Write, = Read) and must be given with parameter address of the corresponding parameter. Normal or parameter operation are selected by using the mode bit (most significant bit in word 3 ( = Normal-, 1 = Parameter operation). Word 1: R / W Bit + Address e.g. 8 H + 19 H => 99 H Word 2: Parameter value. e.g. 7FFF H Wort 3: Mode bit = 1 + control bits e.g. 8 H + 4 H => 94 H For bit configured parameters only those bits that correspond to the required characteristic may be altered. All other bits must not be changed; otherwise the basic settings for the load could be altered. The procedure for adjustment using bit parameters is as follows:- 1. Read parameter value. 2. Only alter the required bit value(s) for the parameter which is chosen. 3. Switch on the write enable. 4. Write the changed parameter value back to the same address. 5. Remove the write enable. 6

7 3.2.2 Send Write enable H-Byte L-Byte Wort C DE Address Write Key =CDE H B5 E7 Write Key =B5E7 H H-Byte L-Byte Word Control Word + 8 H 1 Mode bit Mode bit must be set to 1!! All bits not used must be. Bit = 1 = Function ON Control Information (unit specific) Receive, confirm write enable H-Byte L-Byte Word 1 C DE CDE H B5 E7 B5E7 H H-Byte L-Byte Word 3 C DE CDE H New parameter can be sent after confirmation has been received Send Parameter H-Byte L-Byte Word R / W Parameter address Parameter address + R / W Bit (16-Bit) =..FFFF H Parameter value XX XX (16-Bit) =..FFFF H H-Byte L-Byte Word Control Word + 8H 1 Mode bit Control information (unit specific) Mode bit must be set to 1!! All bits not used must be. Bit = 1 = Function ON 7

8 Receive Confirmation H-Byte L-Byte Word Parameter address Confirmation of the sent address + R / W - Bit Confirmation parameter value XX XX R / W H-Byte L-Byte Word 3 C DE Confirmation parameter mode (always CDE H) Remove Write Enable H-Byte L-Byte Word 1 C DE Address Write Key =CDE H Key value H-Byte L-Byte Word Control Word + 8H 1 Mode bit Control information (unit specific) Mode bit must be set to 1!! All bits not used must be. Bit = 1 = Function ON Read Parameter (send) H-Byte L-Byte Word R / W Parameter address Parameter address + R / W - Bit Read key value H-Byte L-Byte Word 3 8 Mode bit = 1 + Control Bits Receive Parameter H-Byte L-Byte Word Confirmation Parameter address Parameter address + R / W - Bit R / W XX XX Parameter value H-Byte L-Byte Word 3 C DE Confirmation parameter mode 8

9 3.2.7 Bit Configured Parameter Bit information. Change individual Bits in a control word. Each bit sets a switch which enables or inhibits a function. In the user program this bit manipulation must be isolated in a table. If required more than one bit may be altered simultaneously. Parameter address Control word S.P Setpoint E. Time out -SE. Invert Sensor A.F.C. Automatic Frequency Control ACC Regulation operation External set point potentiometer En.C. Hide menus 4.2 External set point 4...2mA E.S.P. External set point Bit = 1 = Function ON Bits that are not shown should not be altered. Parameter address Bit = 1 = Function ON -En. Invert enable Bits that are not shown should not be altered. Parameter address Stop Flag Bit = 1 = Function ON Bits that are not shown should not be altered 9

10 4. Parameter Table Non listed addresses should not be changed. Settings Setting range Display- Code Factory settings Entry code Parameter address HEX (.bit) Value range HEX Förderer Ampltude (throughput)..1 % A. %, 2, 8, 96 1C...FFFF H Maximum control range (U max) 5..1 % P. 1 % 96, 8 19 CCC...FFFF H Vibrating frequency (depending on limits) 5..3 Hz F. 1 Hz 96, F H 5..3 dec. (FL.)..(FH.) Soft start ramp..6 Sec. /.,1 Sec FFFF H Soft stop ramp..6 Sek. \.,1 Sek FFFF H Connect to external set point / I E.S.P / 1 Set point (4)...2 ma / I / 1 Potentiometer set point / I POT / 1 (for 3 / 6 / 8 A units) Coarse/fine control / I S.P / 1 Invert enable / I -En / 1 Regulation (with sensor) Switch to regulation mode / I ACC / 1 Proportional characteristic..1 P.A F..FFFF H Integral charcteristic..1 I.A FFFF H Automatic frequency control / I A.F.C / 1 Automatic frequency search start A.F.S. 8 Track control Switch-on delay..6 Sec. I. 5 Sec. 7, FFFF H Switch-off delay..6 Sec. O. 5 Sec. 7, FFFF H Invert sensor PNP / PNP -SE. PNP 7, / 1 inverse Sensor Monitoring Activate Sensor Time-out / I E / 1 Time (Sensor Time-out) Sec. E.E. Not active FFFF H Serial Interface (only when option is fitted) Serial Interface On/Off / I S.I.F. I / 1 Service ERROR Reset Reset CLr.Er C9 H Hide programming menus / I Hd.C / 1 User parameter menus # U.S.I. 143 Save user settings PUSH. 143 Return to factory settings FAC. 21 Select user parameter menu # U.S.I. 21 Return to user settings US.PA. 21 Service Basic Settings Service Menu Enable / I En.S / 1 Display current value i. 4 2A..8 H Current limit..1 % I FFFF H Lower frequency limit 5..3 Hz F.L F H 5..3 dec. Upper frequency limit 5..3 Hz F.H F H 5..3 dec. 1

11 5. Example of serial interface communication with frequency controller REOVIB MFS 268 Variable values are written in italics. 5.1 Normal Operation (set point set at 7 %) Send set point 1 B332 H Set point = 7 % H Enable ON A5xx H Ready "B3324"+CR "A5xx"+CR (Control STOP) Send Set point 1 B332 H Set point = 7 % H Enable AUS A5xx H Ready "B332"+CR "A5xx"+CR 11

12 5.2 Parameter Operation (e.g. Set frequency to 5Hz and soft start to 2 seconds) 1 CDE H Address write key CDE H Confirmation 2 B5E7 H Value write key B5E7 H Confirmation 3 8 H + Set Mode bit = 1 CDE H Confirmation Write enable "CODEB5E78"+CR "CODEB5E7COD"+CR Write parameter 1 95 H Parameter address 95 H Confirmation Frequency + R / W - Bit H Frequency 5 Hz 1388 H Confirmation 5 Hz 3 8 H + Set Mode bit = 1 CDE H Confirmation " "+CR "951388CODE"+CR Write parameter H Parameter address 913 H Confirmation Soft start + R / W - Bit H Soft start 2 secs H Confirmation 2 secs. 3 8 H + Set Mode bit = 1 CDE H Confirmation " "+CR " CODE"+CR Close write enable 1 CDE H Adresss write key CDE H Confirmation 2 H Value write key H Confirmation 3 8 H + Control Bits Set Mode bit = 1 CDE H Confirmation "CODE8"+CR "CODECODE"+CR (Parameter read only) Read H Parameter address 113 H Confirmation Soft start 2 H Read Parameter 8 H Parameter value ( => 5 Secs) 3 8 H + Set Mode bit = 1 CDE H Confirmation Parameter Mode "1138"+CR "1138CODE"+CR 12

13 Example for changing bit parameter Read Parameter H Parameter address 181 H Confirmation 2 H Parameter read H Parameter value 3 8 H + Set Mode bit = 1 CDE H Confirmation parameter mode "1818"+CR "181CODE"+CR Alter bit in chosen parameter (e.g. Change bit 2 at address 181 H auf 1 = Invert Enable). Write enable 1 CDE H Adress write key CDE H Confirmation 2 B5E7 H Value write key B5E7 H Confirmation 3 8 H + Set Mode bit = 1 CDE H Confirmation "CODEB5E78"+CR "CODEB5E7CODE"+CR H Parameter address 981 H Confirmation Write parameter 2 2 H new Parameter 2 H Confirmation 3 8 H + Set Mode bit = 1 CDE H Confirmation "98128"+CR "9812CODE"+CR Close write enable 1 CDE H Adress write key CDE H Confirmation 2 H Value write key H Confirmation 3 8 H + Set Mode bit = 1 CDE H Confirmation "CODE8"+CR "CODECODE"+CR 13

14 5.3 RESET of Controller Write enable 1 CDE H Adress write key CDE H Confirmation 2 B5C9 H Value write key B5C9 H Confirmation 3 8 H + Set Mode bit = 1 CDE H Confirmation "CODEB5C98"+CR "CODEB5C9CODE"+CR Write parameter 1 94 H Parameter address + R / W - Bit 2 C9 H RESET. H 3 8 H + Set Mode bit = 1 CDE H H Confirmation "94C98"+CR "94CODE"+CR RESET Allow approximately.5 seconds! 14

15 Operating Instructions 6 Dimension 6.1 Dimension 6 A unit Ø5, MFS F I P P P P Ø5, 7 6,5 15

16 Operating Instructions 6.2 Dimension 16 A unit Ø5, L N PE PE +24V +24V +1V +24V MFS F P SPEED I P P P 27 A1 A2 PE Ø5, 14 6,5 16