Multidrop ASCII - Spectrum Controls, Inc.
Contents
1. 11 CHAPTER 2 CONNECTING To THE NETWORK 13 CHAPTER 3 SENDING COMMANDS users 15 A 15 The Command Protocol une 16 Supported Display Characters 1 aratores 24 Supported Control Codes erectione 26 An Example Session circa 27 111 iv CHAPTER 4 ENTERING 31 Keypad Entrada 31 Arcade Entry of ASCII Characters c scsescsesosnssessseess 35 Direct ASCH Code Entry ae 36 CHAPTER 5 TROUBLESHOOTING eren 37 General Symptoms and Solutions 37 Resetting Your SOI 260 5 scdscncecstscesutcsssauptoncsssncapeons 38 APPENDIX A EXAMPLE APPLICATION cernens 39 NDEX leere 43 PREFACE Background Read this preface to familiarize yourself with the rest of this Reference This preface covers e background e who should use this guide e what this Reference covers related documents e terminal mode e point to point operation This Reference covers the information needed to use an SOI 260 operator interface product with a Multi Drop RS 485 network The Reference contains the information you need to configure install and use an SOI 260 This Reference also provides troubleshooting help should the need arise Please read all the information in this reference before you install or use your SOI 260 The Multi Drop ASCII protocol lets you develop programs tha2. responses temps W WHILE temp lt gt 5 temp 1 1 response temps WEND PRINT Poll key response response PRINT 1 01 ESCS C ETX Clear screen node 1 IF response 01 ETXS THEN scrn Purging tank U ELSE scrn Aborting Purge ju END IF PRINT Station 41 scrn PRINT 1 01 ESCS x011 scrn 5 Text to node 1 column 1 line 1 GOTO continueMain END IF WEND continueMain PRINT 1 01 ESCS FO ETXS Flash alarm LED off PRINT PRINT Select one of the following PRINT 1 Continue procedure PRINT 2 Abort procedure WHILE 1 key INKEYS IF key 2 THEN END break forever loop IF key 1 THEN GOTO mainLoop WEND WEND End main forever loop CLOSE 1 END End program 41 SZ Murti Dror ASCII COMMUNICATIONS REFERENCE 42 INDEX SYMBOLS key 35 cfg files 6 7 9 key 35 tkey 35 A Adapters 2 Addressing 8 11 15 16 17 37 Alarm LED 19 Anti static material ii Application programs uploading downloading 6 7 9 Arcade entry 35 ASCII code entry 36 display characters 24 26 B Backspace key 35 Baud rate 8 11 37 Blinking cursor 8 LED 19 Block cursor 8 11 Brightness key 34 Broadcasting 16 Buffer 2 20 Bus contension 16 E Cabling 13 14 37 CE key 33 Change sign key 35 Clear entry 33 screen 21 Column numb
3. Use the following switch settings to download an SOI 260 program file CFG file using the Comm Port and RS 485 communications ON ON ON ON ON CHAPTER 1 CONFIGURING Example 3 After downloading the SOI 260 program file CFG file use the following switch settings before connecting your SOI 260 to a multi drop RS 485 network ON ON ON OFF OFF Using the SOI SPS Programming Software Before you can use your SOI 260 you must edit its program file identified with a CFG extension To do this connect your SOI 260 to a personal computer and use the SOI SPS Programming Software to edit and download the program file You may use either the SOI 260 s communications port or optional printer port to upload or download the program file from a personal computer Appendix A shows the required cabling and connections when building your own cable If you don t want to build your own cable Spectrum Controls offers the SCC 3 cable for uploading and downloading application programs 501 260 O 00 DODO DODOO 00000 000 CI Programming Terminal Cable Catalog No SCC 3 See the SOI SPS Programming Software Manual publication 0300054 for information on how to install and use this software SZ Murt Dror ASCII COMMUNICATIONS REFERENCE After installing and running SOI SPS 1 Select the EDIT PROGRAM FILE item from the SOI 200 SERIES OPENING MENU SOI
4. be all caps Terminator 0 ETX 1 CR 2 LF 3 CR LF Example 02ESCTOSTX Sets the current line terminator to ETX 17 SZ Murti Dror ASCII COMMUNICATIONS REFERENCE 18 Request Configuration Parameters Sends configuration parameters back to the master Command Format id ESCcS TX Returns id Class Version Revision Serial Response Terminator id 01 to FF note Letters must be all caps Class 2 characters SOI 260 26 Version 2 characters 00 to FF Revision 2 characters 00 to FF Serial 1 character 0 RS232 1 RS485 Response Terminator ETX CR LF or CR LF Example 02ESCcSTX Request configuration parameters of the SOI 260 Note all fields must be specified The SOI 260 will return the following characters 02260A021ETX assuming the software version and revision of the SOI 260 is 0A 02 and RS 485 communications are enabled Echo Back Text Causes the SOI 260 to echo back the ASCII characters sent as the text argument of the command line followed by a line terminator This can be used by the master computer to verify that the terminal is properly connected to the serial link Command Format idJESCe text STX Returns id text response terminator id 01 to FF note Letters must be all caps text test message 50 character max Note if gt 50 characters this command is ignored response terminator ETX CR LF or CR LF Exam
5. buffer This allows the master computer to cancel the operator s input for important status messages of other critical displays This command re enables keypad entry sets keypad status to no key entered and clears the keypad buffer Note this command does not clear the retransmit keypad buffer Command Format idJESCoSTX Returns No response id 01 to FF note Letters must be all caps Example 02ESCoSTX Clears the output buffer Poll Terminal for Operator Input Returns the contents of the SOI 260 s keypad buffer This will return message data if the terminal is in an output pending state otherwise Node ID and a line terminator is returned to the master computer If data is polled the keypad buffer is automatically cleared The keypad is then re enabled and key pad status is set to no keys entered Command Format idJESCpSTX Returns id data response terminator id 01 to FF note Letters must be all caps Example 02ESCpSTX Polls the terminal for operator input Returns 1234ETX after the operator entered 1 2 3 and 4 and then pressed the enter key and clears the keypad buffer Retrieve Last Keypad Input Returns the last keypad entry Note the last keypad entry is cleared only when function key is pressed or after a full unit reset Command Format idJESCrSTX Returns id text response terminator id 01 to FF note Letters must be all caps Example 02ESCrSTX Retrieves th
6. lighting conditions are not bright enough to allow clear viewing of the display 34 CHAPTER 4 ENTERING DATA E BJ BN i ur key Decimal point Adds a decimal point to the keypad buffer contents EXP key Initiates the process for directly entering ASCII character codes See Direct ASCII Code Entry later in this chapter for more information tkey Change sign Adds a not a to the keypad buffer contents lt key Backspace The backspace key moves the cursor back one position character at a time and deletes the character in the process Once you press the ENTER key the value cannot be deleted with the Backspace key White Keys Adds the corresponding number to the keypad buffer contents Arcade Entry of ASCII Characters The arcade entry method uses the PREV NEXT keys to scroll through a set of ASCII characters The ENTER key sends the character selected to the keypad buffer The ENTER key may then be pressed again to set the keypad status to keys buffered ready for poll If a character was selected via PREV NEXT but not entered via ENTER and some other key is pressed the new key press overrides the Arcade entry The following character set is provided ABCDEFGHIJKLMNOPQRSTUVWXYZ The above set includes a space uppercase A through Z the equal sign the pound sign the question mark the asterisk the colon the percent sign the forward slash the com
7. material Antistatic plastic material can be identified by its pink color and can be obtained in sheet or bag form UNACCEPTABLE Do not use ordinary plastic film foam or styrene chips popcorn or peanuts These materials can accumulate charges in excess of 10 000 volts resulting in possible damage to the Spectrum Controls electronic device Antistatic metallized plastic bags can be obtained from the following manufacturers 3M Company 800 328 1368 Type 2100 bag Static Inc 800 782 8424 8000 Series bag Charles Water 617 964 8370 CP 303 bag Copyright and Trademark information SOI and SOI SPS are trademarks of Spectrum Controls Inc IBM is a registered trademark of International Business Machines Corporation MS DOS is a registered trademark of Microsoft Corporation All other trademarks belong to their respective owners 1998 Spectrum Controls Inc All rights reserved Specifications subject to change without notice Printed in U S A CONTENTS FEE ee 1 Backersund ensure 1 Who Should Use this Reference 3 Related Documents naaa 3 Terminal Modena aida 3 Point to Point Operation une ee 4 CHAPTER 1 CONFIGURING eene 5 Setting DIP Switches 5 Using SOI SPS Programming Software 7 Using the 501 2605 F Key scarico cia 9 Using the Network Master Computer
8. parameters using the key on the SOI 260 as described in the following subsection Using the SOI 260 s Key Note After downloading the program file you may reconfigure your SOI 260 using the SOI 260 s key menus While you use the F key menus your SOI 260 cannot display or respond to commands from the network master computer SZ Murt Dror ASCII COMMUNICATIONS REFERENCE The following figure shows the F key menus that appear on the SOI 260 display and the key presses linking them together Press F function key 1 C Port 5 BL INT 1ComPort 5 Exit 2Term 6 Contrast 1 2 KeyPad 3Test 7 Status gt 3 Display 4 Reset 4 Node Addr 1 Half Duplex 2 2 Line Feed Enable 3 Cursor Enable 4 Exit Diagnostic Test 3 NEXT To Change ENTER To Select lt test name gt Press Y To Reset 4 Press N To Abort 2 BL INT Enab ON 1 5 1 or Y ON 0 or N OFF ENTER No change Contrast Enab ON 1 6 mu or y ON 0 or N OFF ENTER No change 7 y FRN 00 00 SW build date and time SW 00000000 00000000 lt For Spectrum s use only Press ENTER Press F function key SOI 260 is now online 10 CHAPTER 1 CONFIGURING SZ After pressing the F key and selecting menu item 1 ComPort you may change any of the following parameters Menu Choice Parameter Possible Values ComPort Baud rate 3
9. 00 1200 2400 4800 9600 or 19200 38400 Parity Even odd or none Data bits 70r8 KeyPad Response terminator ETX CR LF or CR LF Keypad Disabled or enabled Display Entry echo Disabled or enabled Cursor Disabled underlined or flashing block Node Addr Node address 01 hex to FF hex Factory default in bold Note You may also change these parameters using the SOI SPS Programming Software Using the Network Master Computer After properly configuring your SOI 260 and connecting it to a Multi Drop RS 485 network you may reconfigure your SOI 260 by sending commands from the host controller network master computer Using the appropriate command you may change any of the following parameters Command Parameter Possible Values T Response terminator ETX CR LF or CR LF k Keypad Disabled or enabled f Entry echo Disabled or enabled N Node address 01 hex to FF hex Factory default in bold 11 SZ Murti Dror ASCII COMMUNICATIONS REFERENCE 12 CHAPTER 2 Note CONNECTING THE NETWORK Read this chapter of the Multi Drop ASCH Communications Reference to connect your SOI 260 to a multi drop RS 485 network This chapter covers the cabling needed to use the SOI 260 s communications port with RS 485 communications enabled RS 232 485 Communications Port female For information on mounting the SOI 260 as well as co
10. 16 23 Multi drop network 6 13 N N key 33 Network 13 Network master computer 11 NEXT key 33 Node address 8 11 15 16 17 37 O 9 key 33 OS 6 E Packaging ii Parity 8 11 Personal computer 1 See also Programming computer See Network master computer Pin connections 13 14 Point to point communications 4 39 Polling 20 39 Ports 6 8 11 13 14 PREV key 33 PREV MENU key 32 Programming computer 1 7 Programming software 7 9 Programs uploading downloading 6 7 9 Protocol 16 23 Publications 3 R Repackaging ii Resetting 38 Resistor termination 14 Response terminator 11 17 Return key 33 Row number 22 23 RS 232 4 6 39 RS 485 6 13 S Screen See Display Setting up 5 11 13 14 Shield 14 SOLSPS 7 9 INDEX Static charge ii Status keypad 21 STX 15 16 16 Sun symbol key 34 Switches 5 7 Syntax 16 T Terminal mode 3 6 Terminataion 14 Terminator command 15 16 16 response 8 11 17 Troubleshooting 37 38 U Underlined cursor 8 11 Unsupported control codes 26 27 Uploading downloading applications 6 7 9 W Warranty i Writing text 22 39 Y Y Key 33 45 SZ Murti Dror ASCII COMMUNICATIONS REFERENCE 46 Seon ECTRUM N T R oO L 5 Copyright 1998 Spectrum Controls Inc All rights reserved Specifications cables to chang without notice Printed in U S A Publication 0300155 02 Rev B April 1998 Corporate Headquarters Spectrum Co
11. 200 SERIES OPENING MENU EDIT PROGRAM FILE DOWNLOAD FILE TO SOI 200 SERIES UPLOAD FILE FROM SOI 200 SERIES OUTPUT HARD COPY OF FILE UPGRADE OPERATING SYSTEM USE 11 KEYS TO CHOOSE AN ITEM PRESS ENTER TO SELECT PRESS ESC TO EXIT EDIT PROGRAM FILE USE TO CREATE OR MODIFY A SOI 200 SERIES PROGRAM FILE A MODIFIED FILE CAN BE SAVED UNDER A NEW NAME 2 Enter a name for your program file 3 Select SOI 260 MULTIDROP Using SOI SPS you may change any of the following parameters Parameter Possible Values Comm Port Baud rate 300 1200 2400 4800 9600 or 19200 38400 Parity Even odd or none Data bits 7or8 Terminal Setting Response terminator ETX CR LF or CR LF Keypad Disabled or enabled Display Entry echo Disabled or enabled Cursor Disabled underlined or flashing block Node Address Node address 01 hex to FF hex Factory default in bold CHAPTER 1 CONFIGURING Note After changing any of these parameters save the CFG file and select the DOWNLOAD FILE 501 200 SERIES item in the SOI 200 SERIES OPENING MENU to update the configuration of your SOI 260 If your SOI 260 already has another Operating System loaded you will be prompted to download the SOI 260 Multi Drop protocol Once you have properly configured your SOI 260 and set DIP switch 1 OFF to disable upload download and DIP switch 4 ON to enable the key menus you may change these same
12. Exapmle 02ESCySTX Returns cursor position Note all fields must be specified Returns 021904ETX cursor is at column 19 line 4 23 SZ Murti Dror ASCII COMMUNICATIONS REFERENCE Supported Display Characters The following charts show the supported ASCII display characters and their corresponding Decimal and Hexadecimal codes All of the above characters are supported when 8 bit communications is enabled Hex codes below 80H are supported by 7 bit communications 24 CHAPTER 3 SENDING COMMANDS Pee RR AT HE Pd E NS h 1 J k 1 Mi Fi t LA AX d st All of the above characters are supported when 8 bit communications is enabled Hex codes below 80H are supported by 7 bit communications 25 26 All of the above characters are supported when 8 bit communications is enabled Hex codes below 80H are supported by 7 bit communications Supported Control Codes The only control codes supported by the SOI 260 are STX 02 hex ETX 03 hex and ESC 1B hex as defined in the command protocol If these supported control codes do not appear in the expected location of a command line the SOI 260 simply ignores the
13. I characters 00 to FF This is the node address of the terminal MUST BE IN ALL CAPS ESC ASCII escape character 1B hex command ASCII command character case sensitive command data ASCII character s required by the specific command code command terminator STX 02 hex ETX 03 hex STX ETX or ETX STX In each of the following examples a Node Address of 02 and a response terminator of ETX are used and an STX is used as the command terminator from the master computer Note Ifthe network master computer sends an incomplete or illegal command the SOI 260 ignores the command There is no visible indication that the network master computer sent an illegal command 16 CHAPTER 3 SENDING COMMANDS Configuration Commands Command Description N Set Node Address Changes the SOI 260 Node Address Possible node addresses are 01 to FF 2 ASCII characters Address values must be in all caps Command Format idJESCN address STX Returns No response id 01 to FF note Letters must be all caps Note if global address 00 is used this command is ignored address 01 to FF Example 02ESCNFESTX Changes the SOI 260 node address to FE 254 decimal T Set Response Terminator Sets the line terminator to be returned by the SOI 260 This is the character s that is appended to any returned data Command Format idJESC Tlterminator STX Returns No response id 01 to FF note Letters must
14. PUBLICATION 030155 05 REV Sei MULTI Drop ASCII COMMUNICATIONS REFERENCE IMPORTANT e Please read all the information in this reference before you install the product e This reference assumes a full working knowledge of the relevant host controller network master computer NOTICE The products and services described in this manual are useful in a wide variety of applications Therefore the user and others responsible for applying the products and services described herein are responsible for determining their acceptability for each application While efforts have been made to provide accurate information within this manual Spectrum Controls assumes no responsibility for the accuracy completeness or usefulness of the information contained herein Under no circumstances will Spectrum Controls be responsible or liable for any damages or losses including indirect or consequential damages or losses arising out of either the use of any information contained within this manual or the use of any product or service referenced herein No patent liability is assumed by Spectrum Controls with respect to the use of any of the informa tion products circuits programming or services referenced herein The information contained in this manual is subject to change without notice LIMITED WARRANTY Spectrum Controls warrants that its products are free from defects in material and workmanship under no
15. Position DIP Switch Side View 1 2 3 4 5 6 u OPEN SZ Murti Dror ASCII COMMUNICATIONS REFERENCE This DIP switch controls the following functions Switch Position Function Setting Effect 1 Upload Download Enable ON Enables upload download so you can upload and download SOI 260 program files CFG files and a new operating system OS OFF Disables upload download and sets unit to run 2 Comm Port Setting ON Sets Comm port for RS 485 communications OFF Sets Comm port for RS 232 communications 3 Master Security Enable Not used for this protocol 4 F Key Enable ON Enables F Key menu OFF Disables F Key menu 5 Terminal Mode Enable ON Enables terminal mode Requires reset to take effect either by toggling DIP switch 1 using the F Key menu reset option or cycling power Do not enable terminal mode if you want to use the Multi Drop ASCII protocol OFF Disables terminal mode so you can use the Multi Drop ASCII Communications protocol 6 Comm Up Download Enable ON Enables Comm Port for up download OFF Disables Comm Port for up download Factory default in bold Example 1 Use the following switch settings to download an SOI 260 program file CFG file using the Comm Port and RS 232 communications 1 2 3 4 5 6 ON ON ON ON OFF OFF Example 2
16. command All other control codes are unsupported CHAPTER 3 SENDING COMMANDS SZ If unsupported control codes appear in the command data field of a command line the SOI 260 simply filters them out and continues to process the command However if unsupported control codes appear anywhere else the SOI 260 ignores the entire command The following are some examples of valid and invalid commands with control codes inserted at various locations in the command line Example 1 05ESCeHELL lt unsupported code gt O WOR lt unsupported code gt LD STX This command is valid and echos back HELLO WORLD to the network master computer The unsupported control codes appear as part of the command data however they are filtered out by the SOI 260 Example 2 05 WORLD STX This command is valid but only echos back HEL to the network master computer The supported control code EIX appears after HEL This signals the end of the command Example 3 05 lt unsupported code gt ESCeHELLO WORLD STX This command is invalid and ignored by the SOI 260 The unsupported control code appears outside the command data field Example 4 05ESCeHELLO WESCORLD STX This command is invalid and ignored by the SOI 260 The supported control code ESC appears twice in the command line once after the node address which is OK and once in the command data field which is not OK The second ESC in
17. cts If you do not contact your local distributor for the proper training before using these products The following table lists related documents that may help you as you install and use these products Publication Number Title 0300050 SOI 260 Operator Interface User Manual 0300054 SOI SPS Programming Software Manual 0300063 Upload Download Cable For SOI 120 and SOI 260 The SOI 260 Operator Interface User Manual publication 0300050 contains information on the SOI 260 s terminal mode In terminal mode the SOI 260 operates as a simple terminal each key pressed on the SOI 260 s keypad causes a character to be sent out the SOI 260 s communications port Displayable ASCII characters sent into its communications port are displayed on the SOI 260 s 4x20 screen SZ Murti Dror ASCII COMMUNICATIONS REFERENCE Point to Point Operation The SOI 260 can also operate in an RS 232 mode providing a point to point connection to the network master computer 501 260 Network Master Computer CHAPTER 1 CONFIGURING Read this chapter of the Multi Drop ASCII Communications Reference to configure your SOI 260 This chapter covers setting DIP switches e using the SOI SPS programming software using the SOI 260 s key menu e using the network master computer Setting DIP Switches Your SOI 260 provides a 6 position DIP switch under a removable plastic cover on the back of the unit Back Of SOI 260 6
18. e last keypad entry CHAPTER 3 SENDING COMMANDS 2 Request Keypad Status Returns the status of the SOI 260 s keypad input buffer This command will return the Node ID followed by one of the following codes 0 No keys entered 1 Key input in progress 2 Key buffered ready for poll command Command Format idJESC STX Returns id status response terminator id 01 to FF note Letters must be all caps status 0 No Key buffered 1 Keys are being entered 2 Keys are buffered in other words Enter key has been pressed Example 02ESC STX Requests keypad status for node 2 Returns 020ETX if no keys have been pressed Display Commands Command Description C Clear Screen Clears the screen and set cursor position back to column 1 row 1 This command also clears the keypad buffer and sets keypad status to no keys entered Command Format idJESCCSTX Returns No response id 01 to FF note Letters must be all caps Example 02ESCCSTX Clears the screen and moves cursor back to col 1 row 1 21 SZ Murti Dror ASCII COMMUNICATIONS REFERENCE 27 Set Cursor Position Allows the master computer to move the cursor to the desired position without affecting the display contents This command also clears the keypad buffer and sets the keypad status to no keys entered Command Format id ESCi column Returns No response column 00 No change 01 20 m
19. er 22 23 Command 16 23 data 16 response 8 11 terminator 15 16 Communication cabling 13 14 port parameters 37 ports 1 6 8 11 13 14 Computer 1 See also Programming computer See Network master computer Configuring 5 11 17 19 Connectors 13 Contrast key 34 Control codes 26 27 Controller 1 See Network master computer Cusor configuring 8 11 position 22 23 D Data bits 8 11 Data entry 31 36 39 Data link 13 Decimal ASCII codes 24 26 Decimal point key 35 DIP switch 5 7 Display 21 23 characters 24 26 configuring 8 11 Documentation 3 Downloading uploading applications 6 7 9 43 SZ Murti Dror ASCII COMMUNICATIONS REFERENCE 44 E Echo 8 11 18 19 37 Electrostatic damage ii Enter key 33 Entering data 31 36 39 Entry echo 8 11 ESC 16 ESD ii ETX 15 16 EXP key 35 F F key 6 9 11 34 Flashing alarm LED 19 Flashing block cursor 8 11 Function key See F key G Global broadcast 16 Ground 14 H Half moon symbol 34 Hex ASCII codes 24 26 Host controller 1 See Network master computer ID 8 11 16 17 37 Illegal command 16 26 27 37 Incomplete command 16 26 27 Installation 13 K Keypad buffer 2 20 commands 19 21 enabling disabling 8 11 entry 31 35 status 21 Keys green 32 34 light grey 34 36 white 35 L LED 19 Liability i Line number 22 23 Line terminator 8 11 M MAIN MENU key 32 Master computer 1 11 Master Security Enable 6 Messages
20. is polling Terminal 1 9 Terminal 1 01123 90ETX Terminal 1 s data response 01 Node Address 123 90 Data in output keypad buffer ETX Line terminator 10 Host 1EESC ETX Host is requesting keypad status of Terminal 5 11 Terminal 5 Terminal 55 data response 1E Node Address 0 No Keys entered ETX Line terminator 12 Host 03ESCFIETX Turn on the alarm light flashing of Terminal 3 CHAPTER 3 SENDING COMMANDS SZ 13 Host 03ESCFOETX Turn off the alarm light of Terminal 3 14 Host Clear all displays of all terminals 29 SZ Murti Dror ASCII COMMUNICATIONS REFERENCE 30 CHAPTER 4 Keypad Entry Note ENTERING DATA Read this chapter of the Multi Drop ASCH Communications Reference to become familiar with entering data using your SOI 260 This chapter covers e keypad entry e arcade entry of ASCII characters e direct ASCII code entry The SOI 260 displays if entry echo is enabled all key presses without transmitting the operator s input into the keypad buffer until the operator presses the ENTER key Pressing the ENTER key tags the keypad buffer as ready to transmit and disables further keypad entry except for the function F key backlighting intensity key and contrast key At this point the operator can re enable data entry by pressing the function key twice this re initializes the un
21. it When polled to do so the SOI 260 sends the complete contents of the keypad buffer to the nrtwork master computer including the specified line terminator and data entry capability is re enabled Data entry can be re enabled by pressing the F key twice this re initializes unit sl SZ Murt Dror ASCII COMMUNICATIONS REFERENCE The SOI 260 entry field is limited by the size of the display This field can be up to a maximum of 20 characters on the 4x20 display beginning with the most current cursor position and must be contained within one line of display The SOI 260 uses this specific area to display the operator s input when entry echo is enabled otherwise will be shown The length of the entry field available depends on the initial position of the cursor For example if the master computer sends a command to set the cursor to column 10 of line 1 the available entry field size is 11 Go If the master computer attempts to write to the terminal s display while the operator is attempting input the SOI 260 terminates input and completely processes the master computer s message The following commands clear the keypad buffer and set the keypad status to no keys entered e Clear Key Pad Buffer Command Poll Command e Clear Screen Command Set Cursor Command Set Cursor and Write Text Command Consequently if a clear command for example was sent by the master while a user was in the middle of enteri
22. ma and the dollar sign SZ Murti Dror ASCII COMMUNICATIONS REFERENCE Direct ASCII Code Entry The Direct ASCII code entry method allows the user to press the EXP key followed by a decimal value from 32 through 254 to enter an ASCII code directly See Supported Display Characters in Chapter 3 for a list of characters and their decimal equivalents 36 CHAPTER 5 TROUBLESHOOTING This chapter of the Multi Drop ASCII Communications Reference pro vides solutions to possible problems with the SOI 260 and its use with a Multi Drop RS 485 network This chapter also contains a description of how to reset your SOI 260 General Symptoms and Solutions Note The most likely problems are improper cabling invalid commands and mismatched communication port parameters baud rate node address etc The communication parameters must be identical for both the SOI 260 and the network master computer The cabling and the communications port parameters are always the first things to check You can check the communications port parameters either from the SOI or from the SOI SPS programming software see Chapter 1 Configuring If the cabling and communications parameters appear correct use the Echo Back Text command to verify the communications setup 5l SZ Murti Dror ASCII COMMUNICATIONS REFERENCE Resetting Your SOI 260 To reset your 501 260 press the key and then select menu item 4 Re
23. ng a 10 digit code 1234 the clear screen command would be executed and the entry in process would be terminated All the other commands do not affect the keypad buffer or keypad status The keys operate in the following manner Green Keys MAIN MENU key This key has no effect under the Multi Drop ASCII protocol PREV MENU key This key has no effect under the Multi Drop ASCII protocol 9 CHAPTER 4 ENTERING DATA aaa 2 PREV key Scrolls through a list of ASCII characters NEXT key Scrolls through a list of ASCII characters Y Key Adds a Y to the keypad buffer contents N key Adds an N to the keypad buffer contents key Enter If PREV or NEXT were used to select an ASCII character ENTER adds the selected character to the keypad buffer contents If EXP were pressed followed by a decimal value for an ASCII character ENTER adds the selected character to the keypad buffer contents See Direct ASCII Code Entry later in this chapter for more information Otherwise ENTER tags the contents of the keypad buffer as ready to transmit to the master computer Keypad entry is then disabled until the master computer requests the keypad buffer contents or re enabled by pressing the F key twice this re initializes the unit CE key Clear entry The CE key deletes an entire data entry For example you might enter a five digit number where the first and third digits were incorrect By p
24. nnecting power and wiring see the SOl 260 Operator Interface User Manual publication 0300050 Before connecting your SOI 260 to a multi drop RS 485 network you need to reset the SOI 260 DIP switches to disable upload download and enable RS 485 communications See Example 3 in Chapter 1 of this reference 13 SZ Murti Dror ASCII COMMUNICATIONS REFERENCE Connect your SOI 260 to the Multi Drop RS 485 network as shown in the following figure Computer RS 485 Port Master Terminated N TXA TXB LN NE LA HR Pin A A 3412 34172 i Data Out 3 41 Data Out Data In Data In Not Used Transmit Enable NotUsed Ground Shield 501 260 501 260 501 260 RS 485 Port RS 485 Port RS 485 Port Slave 1 Slave 2 Slave N Terminated DY AeA UNBE Note You should terminate the network master computer and the last SOI 260 with a 120Q resistor You should also connect the shield wire to ground at the master computer The preceding figure shows a typical multi drop 4 wire plus shield wire connection 14 CHAPTER 3 Addressing SENDING COMMANDS Read this chapter of the Multi Drop ASCII Communications Reference to become familiar with sending commands to your SOI 260 from a host controller network master computer This chapter cover
25. ntrols Inc P O Box 5533 Bellevue Washington 98006 Fax 425 641 9473 Tel 425 746 9481 Northeastern U S A Sales Office oe Controls Inc 48945 Van Dyke 4B Utica Michigan 48317 Fax 586 731 2715 Tel 586 731 2397 Southeastern U S A Sales Office Spectrum Controls Inc 8860 Saddle Trail Ball Ground Georgia 30107 Fax 678 455 4615 Tel 678 455 4640 Web Site http www spectrumcontrols com mail spectrum spectrumcontrols com
26. ove cursor to desired column line 0 No change 1 4 move to desired line number Example 02ESCI032STX Moves the cursor to col 3 line 2 Note all fields must be specified Set Cursor Position and write text Allows the master computer to write up to 20 characters to the SOI 260 screen depending on the initial cursor position The text location is specified by column number and line number Once this command is executed it also clears the keypad buffer and sets the keypad status to no keys entered Command Format id ESCx column line text STX Returns No response id 01 to FF note Letters must be all caps column 00 No change 01 20 move cursor to desired column line 0 No change 1 4 move to desired line number text text message Any message longer than the screen will be truncated Example 02ESCx012HELLOSTX Displays HELLO text starting on col 1 line 2 Note all fields must be specified CHAPTER 3 SENDING COMMANDS SZ y Read Cursor Position Allows the network master computer to read the current cursor position The column is returned as two digits from 01 to the maximum line length 20 for SOI 260 The line is returned as two digit 01 02 03 or 04 by the SOI 260 Command Format idJESCySTX Returns id column line response terminator id 01 to FF note Letters must be all caps column 01 20 Column number line 01 04 Row number
27. ple 02ESCeHello world STX Commands the SOI 260 to echo back 02Hello world ETX CHAPTER 3 SENDING COMMANDS Flash Alarm LED Turns on or turns off the alarm LED as indicated by the option parameter Command Format id JESCF option STX Returns No response id 01 to FF note Letters must be all caps option 0 Alarm Light Off 1 Alarm Light Blinking Example 02ESCF1STX Turns on the alarm light blinking Keypad Commands Command Description k Keypad Control Allows master computer control over the keypad operation Command Format id ESCk enable STX Returns No response id 01 to FF note Letters must be all caps enable 0 No change 1 Disable all keypad entry Except for Function Contrast and BackLight key 2 Enable keypad entry Example 02ESCk1STX The following command disables all keypad entry except for the Function Key P Contrast and BackLight key Entry Echo Allows the master computer to control the keypad display echo during keypad input Command Format id ESCf entry echo STX Returns No response id 01 to FF note Letters must be all caps entry echo 0 No change 1 Display during entry 2 Enable keypad echo Example 02ESCfi STX Displays during keypad entry 16 SZ Murti Dror ASCII COMMUNICATIONS REFERENCE 20 Clear Output keypad Buffer Clears the contents of the SOI 260 s keypad
28. r screen Initial Master Console COMM Port OPEN com2 9600 n 8 1 ASC rs cs ds cd FOR RANDOM AS 1 Global broadcast all nodes PRINT 1 00 ESCS C ETX Clear screen PRINT 1 00 ESCS TO ETXS Set Line termination to option 0 ETX mainLoop CLS clear main console screen WHILE 1 Forever loop PRINT Confirm Tank Purge on Operator Station 1 Create screen on node 1 PRINT 1 01 ESCS x011 Inspect Purge Valve ETX Text to column 1 line 1 PRINT 1 01 ESCS x012 Enter 1 or 2 _ ETXS Text to column 1 line 2 PRINT 1 01 ESCS x013 1 Valve ETXS Text to column 1 line 3 PRINT 1 01 x014 2 Abort 5 Text to column 1 line 4 PRINT 1 01 ESCS 1152 ETX Position cur column 15 line 2 PRINT 1 OI ESCS o ETXS Clear Node 1 key buffer PRINT 1 01 ESCS F1 ETXS Flash alarm LED Poll for operator input WHILE 1 wait forever PRINT 1 01 ESC ETX Request Keypad Status Node 1 responses temp WHILE temp lt gt ETXS temp 1 1 APPENDIX A EXAMPLE APPLICATION responseS response temp WEND IF response 012 ETXS THEN if key buffer not empty Nodel PRINT 1 01 ESCS p ETXS Request Keypad Status Node 1
29. ressing the CE key the entire value would be deleted and you could enter a new value Once you press the ENTER key the value cannot be deleted with the CLEAR ENTRY key SZ Murti Dror ASCII COMMUNICATIONS REFERENCE F Key Function key The F key sets special features and operating parameters of the SOI 260 The F key is enabled or disabled by setting DIP switch 4 See Chapter 1 for more information When you press the Fkey the F LED illuminates indicating the SOI 260 is in the function mode At this time the function key menu is displayed and the unit is off line To select a menu item press the number on the keypad corresponding to the menu item number The functions are described in Chapter 1 of this reference Pressing the F key again resumes communication with the master computer Light Grey Keys Contrast key Half moon symbol The contrast key adjusts the amount of contrast the display uses for viewing purposes Contrast is adjustable in four steps This key is useful for fine tuning the display in unique lighting temperature or viewing conditions Note This key is only included with the liquid crystal display LCD model of the SOI 260 Brightness key m Sun symbol The brightness key adjusts the amount of LED backlighting on LCD displays which is adjustable in 4 steps This key also adjusts the character brightness on VFD displays in 2 steps Backlighting is useful if the ambient
30. rmal use and service as described in Spectrum Controls literature covering this product for a period of 1 year Spectrum Controls obligations under this warranty are limited to replacing or repairing at its option at its factory or facility any product which shall in the applicable period after shipment be returned to Spectrum Controls facility transportation charges prepaid and which after examination is determined to the satisfaction of Spectrum Controls to be thus defective This warranty shall not apply to any such equipment which shall have been repaired or altered except by Spectrum Controls or which shall have been subject to misuse neglect or accident In no case shall Spectrum Controls liability exceed the purchase price The aforementioned provisions do not extend the original warranty period of any product which has either been repaired or replaced by Spectrum Controls il CAUTION Spectrum Controls devices contain electronic components which are susceptible to damage from electrostatic discharge A static charge can accumulate on the surface of ordinary plastic wrapping or cushioning material If any Spectrum Controls device must be returned to Spectrum Controls the following packaging instruction must be followed PREFERRED Use the original packaging material as supplied by Spectrum Controls Place the device inside the conductive plastic bag ACCEPTABLE Wrap the device in some type of antistatic
31. s e addressing e the command protocol supported display characters e supported control codes example session To communicate with an SOI 260 the network master computer sends commands strings of ASCII characters across the network These commands always start with the SOI 260 s unique node address followed by a strictly defined set of characters An ETX STX ETX STX or STX ETX character signifies the end of the command line Each SOI 260 on the network continually evaluates these sent commands checking to see if the node address matches its internal node address If the command does not contain its node address the command is ignored and the SOI 260 continues listening for the next command from the network master computer 15 SZ Murti Dror ASCII COMMUNICATIONS REFERENCE If the network master wants to send an identical message to all of the SOI 260s on the network it can use the global broadcast node address of 00 By using the global address the master can send data to all the terminals at once Note Do not use node address 00 with commands that require a response such as Status or Echo Also always ensure that each terminal has a unique node addresses Otherwise bus contention my occur The Command Protocol To communicate on the network the master computer must format its messages according to the following syntax ID JESC command command data terminator Where 1D 2 ASCI
32. set Resetting your 501 260 forces it to go through a power up sequence Press F function key 1 C Port 5 BL INT 2 Term 6 Contrast 3Test 7 Status 4 Reset Press 4 Press Y To Reset Press N To Abort 38 APPENDIX A EXAMPLE APPLICATION Read this appendix of the Multi Drop ASCII Communications Reference to become more familiar with how to apply your SOI 260 The attached Microsoft Quick BASIC source code assumes the use of comm port 2 The SOI 260 is operating in RS 232 mode point to point mode at node address 1 This demonstration program displays the following on the SOI 260 Inspect Purge Valve Enter 1 or 2 _ 1 Valve OK 2 Abort The program then polls the SOI 260 for a 1 or 2 and indicates which selection was made 39 SZ Dror ASCII COMMUNICATIONS REFERENCE 40 The following table summarizes the commands used in the attached demonstration program For the complete command set see Chapter 3 of this reference Command Parameter List Comments F 0 Alarm LED control 0 Turn Alarm LED Off 1 LED On Flashing 0 No Parameters Clear keypad buffer p No parameters Poll keypad buffer No Parameters Request keypad status C No Parameters Clear Screen 01 1 Set cursor position 00 20 column 1 4 row X 01 1 txt Set cursor position and write text 00 20 column 1 4 row ETXS CHRS 3 ESCS 27 CLS Clea
33. t control one or more SOI 260s from an IBM compatibile PC using a standard comm port The user simply implements the control logic in a progamming language such as BASIC SZ Murt Dror ASCII COMMUNICATIONS REFERENCE A Multi Drop network consists of a host controller an IBM compatible personal computer called the network master and a number of SOI 260 operator interfaces connected via an RS 485 data link An RS232 to RS485 converter must be used to interface a standard PC comm port to more than one SOI 260 501 260 RS232 to RS485 Converter Network Master Computer 501 260 The network master initiates all communications sends commands strings of ASCII characters across the data link and polls the SOI 260s for responses To prevent all of the SOI 260s from responding at the same time each SOI 260 is assigned a unique network address Messages from the PC may include a variety of commands to update text and position the cursor on an SOI 260 s display In addition each SOI 260 buffers operator keystrokes which may then be polled by the PC s control program PREFACE Who Should Use this Reference Related Documents Terminal Mode Use this Reference if you design install program or maintain a control system that uses a Multi Drop RS 485 network This reference assumes a full working knowledge of the relevant network master computer You should have a basic understanding of computer produ
34. validates this command An Example Session The following example shows a host controller network master computer communicating with five SOI 260 terminals on a multidrop network The line terminator is set to an ASCII ETX character ASCII control codes are indicated by their ASCII name in Bold Type In this example Terminal 1 has node address 01 Terminal 2 has node address 02 Terminal 3 has node address 03 Terminal 4 has node address 10 Terminal 5 has node address 1E 27 SZ Murti Dror ASCII COMMUNICATIONS REFERENCE 28 Message Sender Message Meaning 1 Host 00ESCx011This is a globalETX Displays This is a global on all terminals starting column 1 line 1 of the display 2 Host 3 Host 01ESCx012Enter Driver ID ETX O1ESCcSTX Displays Enter Driver ID starting on column 1 line 2 of Terminal 1 Request the Terminal 1 s configuration data 4 Terminal 1 012601001ETX Terminal 1 s data response 01 Node Address 26 SOI 260 class number 01 Software Version Number 00 Software Revision Number 1 Serial type RS 485 ETX Line terminator 5 Terminal 1 Operator Enters 123 90 followed by the ENTER key 6 Host 01ESC ETX Host is requesting keypad status of Terminal 1 7 Terminal 1 012ETX Terminal 1 s data response 01 Node Address 2 Keypad is buffered ready for poll ETX Line terminator 8 Host 01ESCpETX Host
Download Pdf Manuals
Related Search