LCD / Barcode Terminal

Transcription

1 ST3 SIOX-LCD / Barcode Terminal p 2 TELEFRANG AB LCD / Barcode Terminal General Description This module is a remote LCD terminal communicating with the central computer through a two-wire SIOX bus. It comprises 18 keys, an LCD alphanumeric display with 2 x 16 characters and a serial reader interface for direct connection to a standard bar code scanner. The module features a switching regulator, which can be supplied either with 12 V - 35 V DC or 12 V - 25 V AC. Versions ST3 ST3-1 2 line x 16 character LCD Terminal/Code Reader. As above, with battery-backed Real Time Clock ST3 TABLE OF CONTENTS General Description...1 Versions...1 Installation...3 Power Supply...3 Startup...3 Bar Code Reader Connector...4 Beeper...5 Display Function...5 Control Characters...8 VT100-Compatible Display Commands...9 Keyboard...9 Key s Presentation Modes...10 Setup Menu...10 SIOX Spy Modes...11 Address and Parameter Modes...14 Communication...15 Parameter Overview...15 Electrical Specifications...20 Environmental Specifications...20 Mechanical Specifications...20 Assistance...20 Customized connector alternatives, key texts, display options, national display characters and functions to individual specifications are available on request. Contact Telefrang for further information. H:\ST3\Man\ST3man.wpd/ /TF

2 ST3 SIOX-LCD / Barcode Terminal p 3 ST3 SIOX-LCD / Barcode Terminal p 4 Installation The ST3 can be placed on a table, or hung on a wall using the four corner holes below the front fasteners. The case is then sealed to IP65. The terminal is equipped with a four-lead connection cable and, optionally, a 9-pole D-sub connector for a bar code scanner. The cable is used for supplying power to the terminal and connecting it to the two-wire communication bus: Green - Yellow = SIOX Bus Brown - White = Power Supply ( + & - DC or AC & AC ) It is virtually impossible to damage the equipment by exchanging wires, since the SIOX bus connection is unpolarized and isolated from the rest of the module, the power supply connection accepts both AC and DC, and both pairs accept peak voltages up to 35 V. Connecting the power supply wires to the SIOX bus will, however, disturb communication for other modules until it has been corrected. Power Supply The ST3 module is opto-isolated from the communication line, so the power to drive the CPU and the Bar Code Reader must be supplied locally. To provide optimum flexibility, the two power leads accept DC voltages from 12 V - 35 V and AC voltages from 12 V - 25 V rms. The module is equipped with a full-wave rectifier for AC, but a DC supply must be connected with + to the Brown wire. Switching the + and - wires from a DC supply will not damage anything but the module will not operate. Since the supply is fed into a switching converter, the supply current is several times lower than the total current used internally by the module and the Bar Code Reader, and decreases when the supply voltage increases. Typical supplies are either an industrial 24 V power supply, common to other lowvoltage equipment, or a small mains / 12 V AC transformer. Startup When power and communication are connected properly, the display lights up and shows a blinking cursor in the top left corner. Test the display and keys by pressing the ENTER (also called <CR>) key for two seconds. The following text will appear. Pressing ENTER again will return to the original, terminal mode. By pressing the key ', (ArrowDown) twice and then ENTER again, a text showing the module name, program version and customer options will be displayed. Another ENTER shows a text ST3 ADDRESS and a digit. Press the $ or & keys (ArrowLeft or ArrowRight) repeatedly to set another address than the original 01. When satisfactory, step through the other keyboard set-up menus by pressing the ENTER. Changes in the set-up will automatically be saved in non-volatile memory and retrieved at each power-up. The C (Delete) key exits the menus without saving the last menu. The menu DUPLEX MODE can be set at LOCAL to test the other keys once all menus have been stepped through. When the terminal is set up, communication can be tested in two ways, either by sending text messages from the central computer controlling the bus (the methods vary depending on the computer), or by selecting Spy, the Bus Listener Mode, see page 14. This mode shows all current communication on the bus. A series of hyphens (--) indicates either that the bit rate is incorrectly set up in the ST3, or that several modules answer to the same address. The ST3 itself will not answer to any communication when set to the Bus Listener Mode. Exit the mode by pressing C or by disconnecting the power supply. Bar Code Reader Connector Some versions of the module are equipped with a 9-pole D-sub female connector suitable for a Bar code scanner. In other types, a 5-pole screw terminal at the right side under the front permits installation of a second cable for the reader. The following pinout is used: pin 3 pin 5 pin 8 pin 9 Data input, TTL levels (accepts RS232 levels). GND Reader Acknowledge output, sinking max 50 ma +5 V supply to reader, max 100 ma The scanner should be set to communicate at 9600 Baud, 7 data bits, parity SPACE and one STOP bit. If the scanner is equipped with an RS232 output, be sure to set the ST3 scanner input to 232' thru the Setup menu, otherwise data will be inverted. For further configurations please refer to the scanner s manual. The bar code string can be read by the central computer either in Data Mode or in String Mode.

3 ST3 SIOX-LCD / Barcode Terminal p 5 ST3 SIOX-LCD / Barcode Terminal p 6 Beeper A correct bar code reading will activate an internal beeper for 300 ms, as will any Key activation. It is possible to silence the beep for each key stroke by setting the parameter bit KEY BEEP. Display Function ASCII characters, hex 0/2-7F, transmitted by the central computer either in Data Mode or String Mode are sent directly to the display, except when Loop Listener Mode or LOCAL has been selected. In LOCAL and ECHO Tx modes, input from the keyboard is also displayed. The module features "auto wraparound", i.e. the cursor is advanced to the beginning of the next line when a character is written in the last column of a line. Characters are mostly identical with the 7-bit ASCII set. When DOUBLE BYTE Data Mode is selected or String Mode is used, it is possible to receive and display some extra 8-bit characters, compatible with the IBM PC standard. In this case, the U.S. display character set is recommended.

4 ST3 SIOX-LCD / Barcode Terminal p 7 ST3 SIOX-LCD / Barcode Terminal p 8 Control Characters Of the control characters, hex 0/0/ - 1F, transmitted by the central computer or, in some cases, entered from the keyboard in LOCAL or ECHO Tx modes, only those listed below are valid: Code Hex ASCII Description CTRL-@ 0/0/ NUL No action. This is the normal data transmitted when the computer wishes to poll the station keys without changing the display. CTRL-G 0/7 BELL Sounds the beeper for 200 ms. CTRL-H 0/8 BS Moves the cursor one column to the left. CTRL-I 0/9 HT Moves the cursor one column to the right. CTRL-J 0/A LF Moves the cursor down one line. If the cursor was on the last line, the display is scrolled when the next permitted code is received. This code is then displayed on the new empty bottom line. When the AUTO LF feature is active, LF generates no scroll, and an LF following a CR is not processed. CTRL-K 0/B VT Moves the cursor up one line. CTRL-L 0/C FF Clears the display and returns the cursor to line 1, column 1. CTRL-M 0/D CR Moves the cursor to the first column on the current line. If AUTO LF is active, a line feed is automatically performed, except when the cursor was on the last line. In this case the display is scrolled when the next permitted code is received. This code is then displayed on the new empty bottom line. CTRL-N 0/E SO Clears the current line and move the cursor to the first column of the line. CTRL-Q 11 DC1 Turns backlight ON. CTRL-S 13 DC3 Turns backlight OFF. CTRL-[ (CTRL-Ä) CTRL-\ (CTRL-Ö) CTRL-] (CTRL-Å) CTRL-~ (CTRL-*) 1B ESC This is the lead-in code for some commands compatible with VT100 (ANSI 3.64), described below. The next character following the ESC will never be displayed. 1C FS Turns the cursor OFF. 1D GS Turns the cursor ON. 1E RS Returns the cursor to line 1, column 1.

5 ST3 SIOX-LCD / Barcode Terminal p 9 ST3 SIOX-LCD / Barcode Terminal p 10 VT100-Compatible Display Commands Some Escape strings, starting with the ESC control character and compatible with VT100, are recognized by the terminal: String Hexadecimal Action Esc 7 1B+37 Saves the current cursor position. Esc 8 1B+38 Restores the cursor to the previously saved position. Esc [ A 1B+5B+41 Moves the cursor up one line. Esc [ B 1B+5B+42 Moves the cursor down one line. Esc [ C 1B+5B+43 Moves the cursor right one column. Esc [ D 1B+5B+44 Moves the cursor left one column. Esc [ J Esc [ 0 J 1B+5B+4A 1B+5B+30/+4A Clears the display from the start up to the current cursor position. Esc [ 1 J 1B+5B+31+4A Clears the display from the current position to the end of the display. Esc [ 2 J 1B+5B+32+4A Clears the display without moving cursor. Esc [ K Esc [ 0 K 1B+5B+4B 1B+5B+30/+4B Clears the current line from beginning up to the cursor. Esc [ 1 K 1B+5B+31+4B Clears the current line from the cursor to its end. Esc [ 2 K 1B+5B+32+4B Clears the current line without moving the cursor. Esc [ P l ; P c H example: Keyboard 1B+5B+30/ +3B Moves the cursor to line P l, and column P c. P c consists of a one or two digit number, 0-39, depending on display size. If Pl ; Pc is omitted, the command returns the cursor to line 1, column 1. The module features a splash-proof membrane keyboard. The keyboard has, in addition to the 10 numeric keys, 4 Arrow keys $ &'%. These keys provide the hexadecimal codes 0/8-0/B. The "C" (Delete) provides the code hex 7F. The Enter key generates the Carriage Return (CR) code hex 0/D. By setting an AlphaNumeric bit in parameter 0/1 (see page 12), the ten numeric keys can be repeatedly pressed to create letter characters in the same way as with a typical cell phone. Another bit allows digits to precede letters. A third bit in the same parameter permits generating lower case letters. In the standard keyboard, this bit may also be toggled on and off via a Shift key. Other keyboards are available on request. Three typical extra alternatives to the standard can be decoded in the module by adding to the Option parameter the values hex 0/0/0/8, 0/0/10/ or 0/0/18. Key s Presentation Modes Parameter 0/5 allows the resulting key codes to be forwarded in different ways: In LOCAL Mode, the key is only displayed, not transmitted. In FULL DUPLEX and ECHO TX Modes, the codes are transmitted to the central computer at next SIOX communication. In ECHO TX Mode, the key is also displayed when it is being transmitted. This saves the central computer the extra communication in order to echo the key. AlphaNumeric keys are temporarily displayed during the selection process and then cleared. BLOCK MODE Normally, key strokes are collected in a buffer of up to 16 positions and fetched at next possible communication. In the Block Mode, however, no buffered keys can be transmitted to the central unless the ENTER key has subsequently been pressed. Meanwhile, the key string is displayed at the cursor position and can be edited by pressing the "C" = delete key. By transmitting setup strings, it is thus possible for the central to switch to/from the Block Mode, depending on which operator response that is expected. Setup Menu In SETUP Mode a number of operation controls can be changed and stored in non-volatile EEPROM. The latest SETUP is always retrieved at power up. Checking or changing controls can be done either by sending special Setup strings over the SIOX bus (described on page 16) or from the keyboard : Pressing the ENTER key for more than 2 seconds will switch the ST3 module between normal working mode and a main menu. Pressing the ' key twice selects the SETUP alternative, and pressing the ENTER key switches to this mode. An access code can be set to prevent unauthorised personnel from entering the SETUP mode. This 4-digit code must be entered from the keyboard within 5 seconds after the ENTER to grant access. The code can only be changed using the remote setup. The code 0000 (set at delivery) or any codes with the hexadecimal digits A...F permit access without keying in the code. The various controls are displayed one by one. Pressing the ENTER key will display next control without affecting the one currently displayed. The SETUP Mode is terminated when all controls have been viewed or when the DELETE key is pressed.

6 ST3 SIOX-LCD / Barcode Terminal p 11 ST3 SIOX-LCD / Barcode Terminal p 12 Changing the options for the currently displayed control is accomplished by pressing either the $ or & key. By repeatedly doing this, all possible options for this control can be selected. When the correct value is displayed, press ENTER to save and proceed with the next control, or press DELETE to exit SETUP Mode without saving the last control in EEPROM. The following controls can be altered in SETUP Mode: SIOX ADDRESS The station address or hex 01-3F. 2 ADDRESSES Bar code are handled by separate communications to the station number above the one for keys and display. BIT RATE RESTART CONTRAST SIOX communication speed ( or Auto = bits/second ). Soft restoration of EEPROM setup values. Display contrast in 16 steps (0/ - F). NATIONAL Display characters: SWEDISH, DANISH, U.S., GERMAN, FRENCH. DUPLEX MODE AUTO LINE FEED AUTO LINE FEED KEY ANSWR MODE KEY BEEP ALPHANUM.KEYS KEY REPEAT BAR CODE SCANNER PARAMETER CHANGE SIOX Spy Modes FULL DUPLEX, ECHO at Transmission, LOCAL, BLOCK. ON/OFF for automatic generation of LF after a CR. An LF directly following the CR is not processed. ON/OFF. Disable Key/Barcodes in Data or String Mode answers: PERMIT (both modes OK), NO DATA, NO STRING. ON/OFF for each key pressed. ON/OFF to let the 10 numeric keys also generate letters. ON/OFF permits repetition of a pressed key. ON/OFF of RS232 mode (standard = TTL). Changes hex values in EEPROM parameters. The ST3 terminal has an installation/service facility, that permits it to act as a"spy", listening to and displaying all communications on the SIOX bus. It is possible to select communications with only one station address or all at the same time. During the spy process, it is not possible to communicate with the module. All Address Spy Mode : This mode is entered by pressing ENTER for two seconds, then ' three times and finally ENTER twice. When this mode is active, messages to all stations and their answers are displayed when they are collected on the SIOX bus. Single Address Spy Mode : This mode is entered by pressing ENTER for two seconds, then ' three times and ENTER again. When a prompting text appears on the display, press ' to select the address and press $ or & repeatedly to select a hex number /01-3F, corresponding to station numbers 1-63, and press ENTER. Single Address, Single Parameter Spy Mode A third alternative specifies a parameter number /0 /0-7F in the selected station to be viewed when the central accesses that parameter. Multiple accesses can be identified by pressing ENTER to show a blank field in the display until next appearance of that parameter on the bus. For the two first modes, pressing ENTER clears the display and starts a new collection of 256 communication characters. If the central computer is communicating, the display will fill up with communication characters, described below. To look at more collected characters following the displayed ones, press & repeatedly until no new information is shown or use $ to back to a previous display. Pressing the DELETE (C) key will return the module to normal operation. Address/Data Representation in Spy Mode Each character communicated is represented by 1-3 display positions. A Data Mode address is shown as a " followed by two hex characters /01-3F, representing station numbers A Text String Mode start sentinel is shown by a " followed by the station number. A Setup String start is shown by a " followed by the station number. Other special codes used in String Mode are displayed as a *, representing the hex codes 81-AF.

7 ST3 SIOX-LCD / Barcode Terminal p 13 ST3 SIOX-LCD / Barcode Terminal p 14 The sign-off characters for unnumbered and number 1 / 2 strings are shown as special mirrored C, E and F, representing the hex codes BC, BE and BF. A Data Character (eighth bit= /0) is displayed as two digits /0 /0-7F. A String Meta character (B /0 + /0 /0-7F) is shown as 8 /0-FF. Incorrect characters, due to low bus voltage, parity errors or simultaneous transmission from two sources are displayed as " ". Especially for text strings, it may be suitable to display ASCII data characters instead of hex. Pressing the $ key switches to ASCII presentation and returns the display to the beginning of the currently collected characters. Data, meta and checksum characters are now displayed as single ASCII characters. Unprintable control codes /0 /0-1F and some meta codes 8 /0-FF are represented by a $ and &, respectively. SIOX Spy Display Examples: - " /02 is a string address to station number 2. It is followed by a data character (hex 61=a) and a code * defining a repeat of the character. (=hex 2E) a number of times. The string ends with a sign-off character (hex BC for unnumbered message) and the string checksum /0 /0 /0 is an answer from the station containing two data characters, a signoff (hex BC = unnumbered) and a checksum. - " /017F is a single data message to station 1, which responds with two characters 12 and 34. (These bytes are concatenated to 14 bits in the SIOX RAM = hex 1A12.) - " /03 /0 /0 is a data mode message to station 3. The rest of the message and the answer is invisible. - " /03 /0 /0 /0 /07C is also a data mode communication. The answer /0 /07C is typical for an ST3 with all keys released. - " /04 /0 /0 /0 /0 is probably a double data byte call to station 4, which starts answering after the first data byte. Address and Parameter Modes The ST3 may be used for setting up other SIOX modules, e.g. when installing a new module on an existing SIOX bus. In such cases, the primary interest can be to change the new module's address, letting the normal program in the central computer identify the module and set the proper parameters. When necessary the ST3 can also access or change any parameter in the other module. It is also possible to use the Address/Parameter function to verify or change a whole SIOX bus, provided that the normal central computer does not attempt any communications while the ST3 is working. Be very careful not to use the Address or Parameter Functions when the central is running an application on the bus! The modules do not mind, but the intended application may suffer. When the proper connections are ready, press the ENTER key to display the Main Menu and then ' one or four times to select either Address or Parameter and finally Enter again. The ST3 will now start searching for another module on the connected bus, which is indicated by the displayed address changing. When another module, able to communicate in String Mode is found, the address change stops and the type of module is displayed. Address Menu Parameter Menu If the end of the top line is blank, no module has been found. In this case, or if this was the wrong module, a new scan may be started by using the $ or & keys. Pressing ' moves the cursor to the bottom line, permitting the operator to change the first address to scan or to change the baudrate before next search. If the Parameter menu is active, pressing the ENTER key when the cursor is on the top line will display the first parameter of the module. Should the parameter data after the equals sign show????, the accessed module does not answer to the parameter read. By pressing $ or &, all 64 possible parameters may be read, and by pressing once or twice, the cursor moves to the parameter data, to permit changing it by means of the $ or & keys. The changed data is saved in the module's EEPROM when ENTER is pressed. - " /05 /0 /0 Station 5 does not respond to calls. - " /06383 /03 /03 is the beginning of a set-up message to station 6.

8 ST3 SIOX-LCD / Barcode Terminal p 15 ST3 SIOX-LCD / Barcode Terminal p 16 Communication The ST3 module communicates using messages as defined in the manual "SIOX SYSTEM DESCRIPTION". Please refer to this manual for a more detailed description on the communication principles. 1. Data Mode. One Address, Single Data. Data transmitted to ST3 is sent to the display directly or processed by the display handling software according to the command codes previously described. The answer data is either a character (0/1-7F) from the key buffer or a from a decoded bar code message. Note that the bar code message is indivisible to avoid the possible risk that a key will appear within the message. 2. Data Mode. Two Addresses, Single Data. In this mode, the module's primary address (=the base address as set in parameter 0/1) is used for transmitting display data to the module and receiving buffered keystrokes from the module. The secondary, next higher address is used for receiving barcode data from the module. Transmitting data other than NUL to the secondary address is not permitted. 3. Data Mode. One/Two Addresses, Double Data. In these modes the module receives two data bytes in each communication. Key or Bar codes in the range hex 0/1 - FF can now be transmitted from the central in Data Mode, although still only a single character. 4. String Mode. String Mode communications can be carried out using both the primary and the secondary address. As for Data Mode, transmitting a non-empty string to the secondary address is not permitted. 5. String Setup Mode. This mode is used to read or change the module's configuration. The module's primary address must be used. In this mode all internal registers can be read or changed in RAM or in EEPROM. 6. String Enquiry Mode. The module's primary address will answer to enquiry strings. 7. String Text Mode. One/Two Addresses. This is the mode that will probably be used under normal operation of the terminal. A call from the central may be empty or contain up to 80 characters to be displayed. The answer from the module contains either the separate keys, a block of keys or a full bar code message. If two addresses are selected, all bar code messages will appear in the answers from the second address, one higher than the preset. Parameter Overview The setup parameters for ST3 are stored in an internal EEPROM and transferred to RAM at power-up. In this way the standard parameters can be set in the EEPROM, while the working modes may be changed in RAM when needed. The setup menu permits all parameters except the access code to be changed in EEPROM and in RAM. All parameters can be viewed or changed remotely using setup string communications, either from an application program or by using the MEMSETUP menu in the SIOXUSER program on a PC or equivalent. Default Factory Setup As delivered, the module will have the following EEPROM set-up (hex notation): Par. Factory Function nr Default 0/ 0/70/0/ No debug, key answer in String and Single Data Modes, 4800 baud, No Group defined. 1 0/10/0/ Station address # 1. The following functions are disabled: repeat flag 80 compatibility, auto LF, alpha-numeric keys, string compression and lower-case letters. 2 0/0/0/0/ No Customer Option or alternate Keys/Language. 3 0/210/ Display Size = 2 * 16 characters. 4 0/0/0/0/ Spy or External Parameter default address. 5 0/0/0/0/ Full Duplex, Beep and Backlight enabled. 6 0/0/0/7 Normal Bar codes, no start-up Menus, Contrast = 7 7 0/0/0/0/ Setup menu access code deactivated. 12 0/0/0/0/ Any PLC program stopped. Another Default operation to stop potentially damaging PLC programs etc is enabled by pressing the ENTER key during power-up. ST3 will then start with the PLC disabled and SIOX address 63, communicating at 4800 bits/s. No EEPROM values are affected. Parameter Description Below are shown the parameter functions. Many different control flags and multiple-bit values may be combined into one parameter, and their respective weights must be added to form one full 16-bit parameter.

9 ST3 SIOX-LCD / Barcode Terminal p 17 ST3 SIOX-LCD / Barcode Terminal p 18 Pos. Value hex hex Function Pos. Value hex hex Function 0/0/ 8xxx PERMIT WRITE ALL CELLS, for production testing. 0/2 0/0/0/x Options reserved for specific customers. 4xxx DISABLE possible key / bar code characters in STRING Mode answers (=send empty answer). xxxn NATIONAL display characters. 0/ = Swedish, 1= Danish, 2 = U.S. ASCII, 3 = German, 4 = French 2xxx DISABLE possible key/bar code characters in DATA Mode answers (=send 0/0/7C or 0/0/7D). xxkk KEYBOARDS KK=0/0/ sets standard, 0/8, 10/ and 18 are three optional keyboards. 1xxx DOUBLE DATA MODE enable, permitting 8-bit display characters. Otherwise single data mode is in effect. 0/3 RRCC DISPLAY SIZE: 0/210/ = 2*16 x0/xx-x7xx BAUDRATE Select ; 9= bits/s, 8 = 9600, 7 = 4800, 6 = 2400, 5 = 1200, 4 = 1200, 3 = 300 bits/s; 0/=Automatic bit rate bits/s. To activate a manual speed change, the module must be reset, either by writing FFFF to this parameter or by a power-down cycle. 0/4 0/1xx-3Fxx SPY / REMOTE PARAMETER ADDRESS for Spy Modes. 0/5 40/xx BLOCK: Keys transmission enabled only after ENTER. xx0/x-xx8x xx0/1-xx3f 1/2 ADDRESS selection. The second address is used for bar code communication when two addresses are selected. GROUP ADDRESS if enabled by setting the Option x8xx. This permits extending the possible addresses on a SIOX bus up to 63*63 = /1 0/1xx- ADDRESS. The address of the module to which 3Fxx it will answer. If dual-address mode is selected, the bar code decoder is accessed at ADDRESS+1. 20/xx 10/xx 0/0/xx xx8x xx1x LOCAL: Keys are displayed directly but not sent. ECHO-Tx: Keys are displayed when sent. FULL DUPLEX: Keys are not displayed. BEEP DISABLE: No beep at key activation. BACKLIGHT DISABLE: No display lighting. 8xxx xx4x xx20/- -xx21 xx1x xxx8 xxx4 MASTER MODE permits the PLC program to start communications on the SIOX bus. AUTO LF permits a received CR to generate a Line Feed. A trailing LF has then no effect. ALPHA NUMERIC KEYS permits keys to also generate letters. In the xx21 alternative, the digit will be shown first. COMPRESS ANSWER TEXTS uses the SIOX compress mode in answers whenever possible. This requires the protocol in the central to be able to decompress the text again. CAPS UNLOCK switches letters derived from alpha-numeric keys to lower case when set. KEY REPEAT allows key to be automatically repeated when kept depressed for half a second. Keys in alpha-numeric mode cannot repeat automatically. 0/6 0/0/xx BARCODE MODE = TTL 0/1xx xx0/x-xx5x BARCODE MODE = RS232 INITIAL MENU permits the module to start in a special mode at power-up. 0/ = Standard Terminal, 1 = Main Menu, 2 = Setup Menu, 3 = Spy Menu, 4 = Remote Module Parameter. xxx0/-xxxf DISPLAY CONTRAST in 16 steps. 0/7 0/0/0/ ACCESS CODE for Setup Menus. 0/0/0/0/ and FFFF do not require the 4-digit access code before entering the Setup Menus. 0/8-0/A 0/ B-0/ D Reserved Cells BUFFER POINTERS not normally changed.

10 ST3 SIOX-LCD / Barcode Terminal p 19 ST3 SIOX-LCD / Barcode Terminal p 20 Pos. Value hex hex Function 0/E 0/0/xx-7Fxx INTER-MESSAGE DELAY is automatically set by the bitrate but can be modified for special cases. Electrical Specifications (T amb = 20 *C) Power Supply Voltage Min Typ Max Unit V DC V RMS 0/F 0/0/0/0/-0/327 CURRENT DISPLAY POSITION for information. Current (excl. bar scanner) Backlight ON ma ma 10/ /0 /0 /0 /0-FFFF PLC DO/DI virtual I/O. The PLC bits Q7...Q1 and I1...I7 (if used) are accessed here. 11 MMxx PLC DO MASK for Q7 - Q1. Refer to PLC manual. xxpp PLC PROGRAM COUNTER 12 TTxx PLC TIMER TICK 1/1200 s - 255/1200 s. xxrr PLC RUN FLAGS 13 xxxx PLC Flag/Accumulator Bits 14 VVVV PLC 16-bit Accumulator 15 TTTT PLC 16-BIT TIMER 16 E0/xx-1Fxx REAL TIME CLOCK fine tuning. xx0/0/-xx63 REAL TIME CLOCK 10 ms counter, reset at 99*10 ms. 17 0/0/0/0/-FFFF REAL TIME CLOCK seconds counter. Check PLC DATE instruction for handling minutes. 18-1F Reserved cells 2 /0-3F PLC USER MEMORY Free for application programs. Environmental Specifications Operating Temperature Range *C Storage Temperature Range *C Mechanical Specifications Case size 180 x 130 x 35 mm Case sealing IP65 Weight 400 g Assistance on safety and technical matters is available from: TELEFRANG AB Varbergsgatan 8 S GÖTEBORG SWEDEN Tel: Fax: /0-7F SPY DATA, for spying on communications to other modules or defining Master Mode communications. Refer to PLC manual. 8 /0-FF PLC PROGRAM AREA. Refer to PLC manual. 1 /0 /0-3FF PLC TEXTS or LOGGING AREA. Refer to PLC manual.