W733-XDCN Rev D00
Contents
1. Dec Hex Char Dec Hex Char Dec Hex Char Dec Hex Char 00 o0 16 20 SP 30 0 1 2 3 4 5 Table 2 6 ASCII Character Set 7 8 9 Hex Char p A a q B b r C Cc Ss D d t E e u F f v G g Ww H h xX i y J j Zz K k L l M m N n z O o ASCII Control Characters Partial Set Ctrl Key Definition Dec Equiv Equiv Ctrl E Enquiry 5 Ctrl F Acknowledge 6 Table 3 Ctrl U Neg Acknowledge 21 ASCII Control Ctrl B Start of Text 2 Characters Ctrl C End of Text 3 Partial Set Ctrl D End of Transmission 4 Ctrl P Data Link Escape 16 Ctrl M Carriage Return 13 Ctrl Q XON 17 Ctrl S XOFF 19 How to Use Data Communications WATLOW Series 733 734 9 Learn Syntax Series 733 734 General Message Syntax As soon as you link the devices you ll be able to talk to the Series 733 734 using ASCII characters The Series 733 734 will respond to any Operation or Program prompt plus some others The control will respond to either upper or lower case ASCII characters from your computer Both protocol interface combinations will respond to the general syntax providing the commands or queries are correctly transmitted However the ANSI X3 28 Protocol requires beginning and ending characters and the XON XOFF Protocol requires ending characters We ll look at those shortly Message Syntax Messages from your computer to the Series 733 734 must take this general form All comman2. How To Use Data Communications with the Watlow Series 733 734 Total Customer Satisfaction 3 Year Warranty no GSHH08080se58 User s Manual WATLOW Watlow Controls 1241 Bundy Blvd P O Box 5580 Winona MN 55987 5580 Phone 507 454 5300 Fax 507 452 4507 W733 XDCN Rev D00 5 00 November 1995 Made in the U S A Supersedes W733 SA10 9324 ay amp Printed on Recycled Paper Pg ar WwW Ww N NOO 10 10 10 10 11 11 12 12 13 14 14 14 15 15 16 17 20 20 21 22 ltem Hardware and Wiring Data Communications and the Series 733 734 Hardware Interfaces Protocols Communications Wiring EIA TIA 422 Interface Pinouts EIA TIA 423 Interface Pinouts EIA TIA 232 Compatible EIA TIA 485 Interface Pinouts Connecting the Control and Computer Setting Hardware Protocol Switches Network Connections Software Setup Communications Setup Prompts ASCII and Series 733 734 Information Series 733 734 General Message Syntax Message Syntax Data Rules Command List Example Format XON XOFF Protocol for EIA TIA 423 Start and Stop Communicating with the Series 733 734 and XON XOFF XON XOFF Command Example XON XOFF Command Example ANSI X3 28 Protocol for EIA TIA 422 amp EIA TIA 485 Device Address Commands Starting Communications in ANSI X3 28 Stopping Communications in ANSI X3 28 ANSI X3 28 Command Example ANSI X3 28 2 Command Example
3. ALM 17 ANSI X3 28 Command Fig 8 15 ANSI X3 28 2 Command Fig 9 16 ANSI X3 28 Protocol for EIA TIA 422 amp EIA TIA 485 14 ASCII Character Set Table 2 9 ASCII Control Characters Partial Set Table 3 9 A1HI A2HI 17 A1LO A2LO 17 AL1 AL2 17 AUT1 AUT2 17 B bAUd 8 Baud Rate 8 Cc C1 C2 17 CAL1 CAL2 17 Carriage Return 11 CF 8 17 Command Example ANSI X3 28 16 XON XOFF 13 Command Example ANSI X3 28 15 XON XOFF 12 Command List Table 5 17 19 Communications Prompts 8 Switch Selection 7 Wiring 3 Connecting the Control and the Computer 4 6 7 CSP 17 CT1 CT2 17 D dAtA 8 Data Link Escape DLE 15 Data Rules 10 Device Address 8 14 E EIA TIA 422 3 4 EIA TIA 423 3 5 EIA TIA 485 3 6 End of Text ETX 14 End of Transmission EOT 15 ER1 ER2 18 Error Codes 18 20 Example Format 11 F Flow Control 11 G GB 18 General Message Syntax 10 H Hardware Interface 3 7 HYS1 HYS2 18 l Identification Number 14 INP1 INP2 18 How to Use Data Communications Interface Wiring EIA TIA 422 Fig 1 4 Index EIA TIA 423 Fig 2 5 EIA TIA 485 Fig 3 6 L LAT 18 LOC 18 LOOP 18 M MDL 19 MDKY 18 MENU 19 Message Syntax 10 MODE 19 MS 19 Multidrop 3 N NAKs and Error Codes 20 Network Connections 7 P PB1 PB2 19 Prot 8 Protocol ANSI X3 28 3 7 XON XOFF 3 7 Switches 7 R RA1 RA2 19
4. Command Summary and Syntax NAKs and Error Codes User Responsibility Series 733 Model Number Information CE Declaration of Conformity WATLOW Series 733 734 23 Pg N Oo f Pg 14 7 Index Fig Item Figures EIA TIA 422 Interface Wiring EIA TIA 423 Interface Wiring EIA TIA 485 Interface Wiring EIA TIA 422 amp EIA TIA 423 Switch Selection WORD General Message Syntax Example XON XOFF Command Example XON XOFF Command Example ANSI X3 28 Command Example ANSI X3 28 2 Command Example Oo ON OD UO Table Item Tables Communications Setup ASCII Character Set ASCII Control Characters Partial Set Address to ASCII Conversion Command Summary and Syntax o A UO N How to Use Data Communications How to Use Data Communications with the Watlow Series 733 734 Bi This manual is a supplement to the Series 733 734 Program and Service Manuals NOTE It is for controls with the data communications option Use in conjunction with the This is expert user Program and Service manuals level material and requires previous experience with data You Have One of Two Serial Hardware Interfaces comunications Depending on your unit s model number you have one of two hardware interfaces 1 EIA TIA 422 for a multidrop or multiple device network up to ten devices total with 4000 ft network length limit or EIA TIA 423 EIA TIA 232 compatible for one on one communication with a 50 ft
5. TCMP lt sp gt data 2 lt cr gt 1 ON TREM Time Remaining lt sp gt TREM lt cr gt Learn Menu time remaining TS Time Select lt sp gt TS lt cr gt 0 minutes seconds lt sp gt TS lt sp gt data 2 lt cr gt How to Use Data Communications 1 hours minutes WATLOW Series 733 734 19 Errors A CAUTION Sending commands to a particular Series 733 734 for which it is not equipped may cause damage to equip ment and or processes NAKs and Error Codes When your message is not acknowledged NAK in EIA TIA 422 or EIA TIA 485 with ANSI X3 28 Protocol you may clear ER2 codes by reading it That is use Then try the message again you may have made a syntax error See the error code listing in Table 5 page 17 With XON XOFF protocol and the EIA TIA 423 interface the 733 734 sends no feedback on commands Therefore you may want to query the status of ER2 after each command you send All communications related error codes are ER2 error codes that is they are not considered cause for a shutdown of the 733 734 unit itself There is always a communications error code generated when a lt NAK gt character is sent under the ANSI X3 28 With XON XOFF flow control error codes may be generated but there will be no standard indication of this fact User Responsibility All data communications commands are available on all models of the Series 733 734 which have communications capability Users mu
6. LDN OO DOODOOOOS 4 WATLOW Series 733 734 How to Use Data Communications RS 423 EIA TIA 423 Interface Pinouts EIA TIA 232 Compatible 73XX XXXX XBxx The EIA TIA 423 communications uses a three wire full duplex system There is a separate line for transmitting a line for receiving data and a line for signal common between the computer and the Series 733 734 With EIA TIA 423 you can have only one Series 733 734 control connected to a single computer This diagram is a typical wiring example The connections on the host computer may vary depending on models Refer to your computer user s manual for more information DB 9 Pinouts Figure 2 1 DCD EIA TIA 423 Inter 2 receive face Pin Designa 3 transmit Hone 4 DTR 5 common 6 DSR 7 RTS 8 CTS 12 Transmit 11 10 9 Receive Common a NOTE The Electronic Industry Associa tion EIA EIA TIA 423 standard DB 9 female viewed from wire side recommends a sia maximum 50 foot typical connections with jumpers total point to point distance Series 733 1 unit only How to Use Data Communications WATLOW Series 733 734 5 EIA 485 Figure 3 EIA TIA 485 Inter face Pin Designa tions y NOTE The Electronic Industry Associa tion EIA TIA 485 standard recom mends a maximum 4000 ft total net work distance EIA TIA 485 Interface Pinouts 73XX XXXX xDxx The EIA TIA 485 communications uses a two wi
7. RE1 RE2 19 RH1 RH2 19 RL1 RL2 19 RTD 19 RUN 19 S Serial Interface 7 Setup Menu 8 SIL 19 Software Protocols 3 8 Space 11 Starting Communications in ANSI X3 28 Protocol 14 Start of Text STX 14 STAT 19 STOP 19 STP 19 Stopping Communications in ANSI X3 28 Protocol 15 Switches Hardware Protocol 7 T TCMP 19 TREM 19 TS 19 Two Hardware Interfaces amp Protocols 3 Ww Wiring for Data Communications 4 6 X XON XOFF Command Example Fig 6 12 Command Example Fig 7 13 Protocol 3 7 Protocol for EIA TIA 423 13 Switches 7 WATLOW Series 733 734 23 Series 733 734 Data Communications User s Manual Watlow Controls 1241 Bundy Blvd P O Box 5580 Winona MN 55987 5580 Phone 507 454 5300 Fax 507 452 4507
8. gt AUT2 lt cr gt 0 No auto tuning lt sp gt AUT2 lt sp gt data 2 lt cr gt 1 Slow response tuning 2 Medium response tuning 3 Fast response tuning C1 Zone 1 Process Value lt sp gt C1 lt cr gt Between R1L and R1H C2 Zone 2 Process Value lt sp gt C2 lt cr gt Between R2L and R2H CAL1 Zone 1 Cal Offset lt sp gt CAL1 lt cr gt 99 F to 99 F lt sp gt CAL1 lt sp gt data 2 lt cr gt 55 C to 55 C CAL2 Zone 2 Cal Offset lt sp gt CAL2 lt cr gt 99 F to 99 F lt sp gt CAL2 lt sp gt data 2 lt cr gt 55 C to 55 C 99 Units to 99 Units CF Degrees Select lt sp gt CF lt cr gt 0 Display F lt sp gt CF lt sp gt data 2 lt cr gt 1 Display C CSP Current Set Point lt sp gt CSP lt sp gt zone lt cr gt 0 Zone 1 1 Zone 2 CT1 Zone 1 Cycle Time lt sp gt CT1 lt cr gt 1 to 60 seconds lt sp gt CT1 lt sp gt data 2 lt cr gt CT2 Zone 2 Cycle Time lt sp gt CT2 lt cr gt 1 to 60 seconds lt sp gt CT2 lt sp gt data 2 lt cr gt Table continued on the next page How to Use Data Communications WATLOW Series 733 734 17 Name data 1 Commands Description Read and or Write Syntax Add ETX amp STX with ANSI X3 28 Protocol Range data 2 ER1 Table 5 Command Summary with Read and Write Simple Syntax and Data Range Responses Error 1 Code Multiple errors possible lt sp gt ER1 lt cr gt lt
9. isolated H Process 0 5V VDC non isolated K Solid state relay without RC suppression form A 0 4A Output 2 Type A None B _ Solid state relay with RC suppression form A 0 4A C Switched DC open collector non isolated D Mechanical relay form A 1A with suppression E Mechanical relay form A 1A without suppression F Process 4 20mA non isolated H Process 0 5V VDC non isolated K Solid state relay without RC suppression form A 0 4A Event Inputs Outputs 0 None 1 4 Event outputs switched DC non isolated custom only Alarm A None D Single mechanical relay form A 1A with suppression Communications Isolated A None B EIA TIA 422 or EIA TIA 423 D EIA TIA 485 Options AA Standard Single Display Power Supply Power Connector and Event Input Output Accessory Kits Order separately here Part No A001 0249 0001 A001 0249 0002 Description A001 0250 0012 Power input connector kit 12 pin connector assembly wire not included A001 0250 0009 How to Us Event input output connector kit 9 pin connector assembly wire not included 120V VAC 24V VAC stepdown transformer Class 2 quick connect terminals included 208 240V VAC 24V VAC stepdown transformer Class 2 quick connect terminals included e Data Communications WATLOW Series 733 734 21 22 WATLOW Series 733 734 How to Use Data Communications A Addr 8 Address 14
10. network length limit with a 733 734 73xx xxxx xBxx and a host computer Selecting EIA TIA 422 or EIA TIA 423 is user selectable via internal switches See Page 7 2 EIA TIA 485 73xx xxxx xDxx also for a multidrop network up to 32 addresses total and with a 4000 ft network length limit You Can Use One of Two Software Protocols There are two protocols available to you Depending on the type of network you need you must use the correct combination of interface and protocol We use ANSI X3 28 Protocol based on ANSI X3 28 1976 Subcategories 2 2 and A3 with the EIA TIA 422 and EIA TIA 485 interface to run a multiple device network We also use XON XOFF Protocol a simpler protocol to run a two device network with an EIA TIA 423 interface XON XOFF will also work with the EIA TIA 422 and EIA TIA 485 interface but the network is limited to two devices one computer and a Series 733 734 XON XOFF Protocol requires no responses to messages like the ANSI X3 28 Protocol does Likewise ANSI X3 28 Protocol which provides a response to every message will work with the EIA TIA 423 interface But again you are limited to one Series 733 734 and a host computer To select which protocol you are going to use go into the Program menu and use the MODE key to advance to the Prot prompt Select either FULL for ANSI X3 28 2 2 A 3 or On for XON XOFF If you are using ANSI X3 28 Protocol choose an address number for the control under the Ad
11. sp gt ER1 lt sp gt 0 lt cr gt 0 No error 1 ROM error 2 RAM error 3 Ambient sensor error 4 Configuration error 5 EEprom error 6 A D underflow error Zone 1 7 A D overflow error Zone 1 8 A D underflow error Zone 2 9 A D overflow error Zone 2 10 Stack overflow error 11 Open sensor Zone 1 12 Shorted sensor Zone 1 13 Open sensor Zone 2 14 Shorted sensor Zone 2 15 Loop error Zone 1 16 Loop error Zone 2 ER2 Error 2 Code lt sp gt ER2 lt cr gt 0 No error 1 Transmit buffer overflow 2 Receive buffer overflow 3 Framing error 4 Overrun error 5 Parity error 6 Talking out of turn 7 Invalid reply error 8 Noise error 20 Command not found 21 Prompt not found 22 Incomplete command line 23 Invalid character 24 Number of chars overflow 25 Input out of limit 26 Read only command 27 Write allowed only GB Guard Band lt sp gt GB lt cr gt lt sp gt GB lt sp gt data 2 lt cr gt 1 to 4000 F 1 to 2222 C 1 to 4000 Units HYS1 Zone 1 Hysteresis lt sp gt HYS1 lt cr gt lt sp gt HYS1 lt sp gt data 2 lt cr gt 1 to 99 F 1 to 55 C HYS2 Zone 2 Hysteresis lt sp gt HYS2 lt cr gt lt sp gt HYS2 lt sp gt data 2 lt cr gt 1 to 99 F 1 to 55 C 1 to 99 Units INP1 Zone 1 Input Type lt sp gt INP1 lt cr gt lt sp gt INP1 lt sp gt data 2 lt cr
12. N XOFF the message above can be transmitted with only an additional Carriage Return lt cr gt hex OD character at the end How ever the ANSI X3 28 Protocol requires an envelope of Start of Text lt STX gt hex 02 and End of Text lt ETX gt hex 03 characters around the information you see above You ll learn how to do that in the pages ahead XON XOFF Protocol for ElA TIA 423 XON XOFF flow conirol Protocol allows a communicating device either a 733 734 or the host to suspend transmission of all messages from the other device and then to continue transmission when it s again ready The device that needs to suspend transmission sends the XOFF character hex 13 to stop the other device s transmitter and XON hex 11 to restart it Note that technically any character will restart the transmitter but only the XON charac ter is not a part of any regular message that may be transferring Messages transmit according to the syntax described in the XON XOFF formats which follow for each command The XON XOFF Protocol requires a Carriage Return lt cr gt character hex OD at the end of every message How to Use Data Communications WATLOW Series 733 734 11 XON XOFF Figure 6 XON XOFF Command Example How To Start and Stop Communicating with the Series 733 734 and XON XOFF Starting communications with XON XOFF Protocol is simple You just configure your computer to agree with the Series 733 734 communication prom
13. TIA 232 to EIA TIA 422 converter to act as a bus or multiple connection point Watlow recommends the Burr Brown LDM 422 for that purpose The address is Burr Brown Inc 1141 West Grant Rd Suite 131 Tucson AZ 85705 Phone 602 624 2434 Fax 602 623 8965 For EIA TIA 485 we recommend the Black Box LD485A MP The address is Black Box Corp Mayview Road at Park Drive Box 12800 Pittsburgh PA 15241 Phone 412 746 5530 Fax 412 746 0746 How to Use Data Communications WATLOW Series 733 734 7 Program Mode Communications Prompts Enter the Program Mode at the front panel Press key sequence gs E E D The display shows Continue pressing D Until feai Current value displays alternately or Press to change value gs or D Press for next prompt Press to exit Document any changes Enter data on a photocopy of this page Program Mode prompts and De scriptions Dnuo This Range Factory Appears Value Default z Baud rate 300 600 1200 2400 4800 9600 1200 if comms unit deka 70 7 data bits and odd parity 7E 7 data bits and even parity 8n 8 data bits and no parity 70 if comms unit Start bit 1 Fixed Stop bit 1 Fixed GEE FULL ANSI X3 28 2 2 A 3 FULL if comms unit On XON XOFF Addr 0 to 31 ASCIl 0 if Prot FULL 8 WATLOW Series 733 734 How to Use Data Communications Read ASCII ASCII Character Set
14. alue The general command syntax applies to all commands The definition and number of argu ments depends on the command itself See Table 5 Pages 17 In this example you want to change the Alarm 1 Low value to 500 Here the command will do the job command Syntax with ANSI X3 28 Protocol lt STX gt lt space gt data 1 lt space gt data 2 lt ETX gt With the command data 1 is the Series 733 734 prompt in this case Alarm 1 Low A1LO Data 2 is the value you want to set for that prompt in this example 500 Enter in ASCII lt STX gt lt space gt A1LO lt space gt 500 lt optional carriage return gt lt ETX gt The hex string is 023D2041314C4F2035303003 lt STX gt lt Space gt A ASCII L Character O Space Figure 8 5 ANSI X3 28 0 Command Example 0 lt ETX gt HEX il Value 02 3D 20 41 31 4C 4F 20 35 30 30 03 Optional Carriage Return How to Use Data Communications WATLOW Series 733 734 15 ANSI X3 28 2 Figure 9 ANSI X3 28 2 Command Example 16 WATLOW Series 733 734 Response from the Series 733 734 lt ACK gt The hex response string is 06 e You ll find the the complete list of command arguments prompts and value limits in Table 5 Pages 17 19 ANSI X3 28 2 Command Example You need to know the Alarm 1 Low value A1LO The uses a variation of the message syntax shown just below This syntax requires the protocol start of text and
15. ant to know the Alarm 1 Low A1LO value The uses a variation of the message syntax shown just below This protocol requires an ending carriage return character 2 Command syntax with XON XOFF Protocol lt space gt data 1 lt cr gt Enter in ASCII lt space gt A1LO lt cr gt The hex string will be 3F2041314C4F0D Space A 1 ASCII L Figure 7 Characters O oR XON XOFF 2 Command Example HEX Value 3F 20 4131 4C 4F OD The value of A1LO will be between rL Range Low and rH Range High say 500 Response from the Series 733 734 lt XOFF gt lt XON gt lt current value of A1LO gt lt cr gt The hex response string is 13113530300D lt XOFF gt lt XON gt ASCII 5 9 Characters 0 114 HEX L Value 13 11 35 30 30 OD How to Use Data Communications WATLOW Series 733 734 13 ANSI X3 28 Table 4 Address to ASCII Conversion ANSI X3 28 Protocol for EIA TIA 422 and EIA TIA 485 The ANSI X3 28 Protocol provides high quality communications by requiring a response to every message With a multiple device or multidrop network this protocol prevents confusion among the separate devices Furthermore if noise occurs somewhere in the system no prompt will change because noise can t comply with the protocol By placing messages inside a protocol envelope the messages are protected In the examples to come you ll see how this works The ANSI X3 28 Protocol requires STX characters a
16. dr prompt following the Prot prompt This prompt will only appear if Prot FULL Communications Wiring To connect your Series 733 734 to a computer use the next three pages as a reference Your computer hardware manual will provide more detailed serial port pin information In the often noisy industrial environments do not take noise isolation lightly How to Use Data Communications WATLOW Series 733 7734 3 RS 422 Figure 1 EIA TIA 422 Inter face Wiring Dia gram 2 NOTE The Electronic Industry Associa tion EIA EIA TIA 422 standard recommends a maximum 4000 ft total network distance EIA TIA 422 Interface Pinouts 73XX XXXX XBxx The EIA TIA 422 communications uses a four wire full duplex system There are two separate lines for transmitting and two lines for receiving data between the computer and the Series 733 734 With EIA TIA 422 you can have from one to ten Series 733 734 controls connected to a single computer This diagram is a typical wiring example The connections on the host computer may vary depending on models See page 7 for information about serial interfaces Refer to your computer user s manual for more information N Twisted Pair Wire m Twisted Pair Wire Common Pin 8 o Q QO 8 16 7 6 5 8 4 Series 3 733 734 21 1 18 1 EIA TIA 232 to EIA TIA 422 Converter Series 733 734 2 YN wO
17. ds do not require the full number of data fields Command lt space gt data 1 lt space gt data 2 lt space gt data 3 data N Command is a character set to which the Series 733 734 will respond The brackets lt gt enclose a non literal description Space is simply a delimiter an ASCII space character Hex 20 Data Fields are prompts and values specific to a command the number of possible data fields depends on the particular com mand you use Data 1 is here abbreviated data 1 Data 2 is data 2 and so on In the syntax explanations ahead we ll show you the specific arguments for each command It will speed the process if you remember this general syntax Data Rules Data fields are prompts and values specific to particular commands These rules govern their use Specific data for each command is listed later in this chapter Data will be ASCII 0 through 9 unless otherwise noted Data can go up to seven total characters including a minus sign A or sign if used must be first and it must have a decimal point if applicable Data can use leading zeros Up to 7 digits Data does use decimal points Data 1 portion of message can be up to four total characters Command List These commands represented by their respective ASCII characters will enable you to program the Series 733 734 from your computer More detailed descrip tions of the commands are in Table 5 pages 17 19 Finds the value of a spec
18. e 2 Rate lt sp gt RA2 lt cr gt 0 to 9 99 minutes lt sp gt RA2 lt sp gt data 2 lt cr gt RE1 Zone 1 Reset lt sp gt RE1 lt cr gt 0 to 9 99 repeats per minute lt sp gt RE1 lt sp gt data 2 lt cr gt RE2 Zone 2 Reset lt sp gt RE2 lt cr gt 0 to 9 99 repeats per minute lt sp gt RE2 lt sp gt data 2 lt cr gt RH1 Zone 1 Range High lt sp gt RH1 lt cr gt RL1 to max INP1 type range lt sp gt RH1 lt sp gt data 2 lt cr gt RH2 Zone 2 Range High lt sp gt RH2 lt cr gt RL2 to max INP2 type range lt sp gt RH2 lt sp gt data 2 lt cr gt RL1 Zone 1 Range Low lt sp gt RL1 lt cr gt Min INP1 type range to RH1 lt sp gt RL1 lt sp gt data 2 lt cr gt RL2 Zone 2 Range Low lt sp gt RL2 lt cr gt Min INP2 type range to RH2 lt sp gt RL2 lt sp gt data 2 lt cr gt RTD RTD Curve lt sp gt RTD lt cr gt 0 DIN lt sp gt RTD lt sp gt data 2 lt cr gt 1 JIS RUN Menu Run lt sp gt RUN lt sp gt menu lt cr gt n Run Menu n SIL Alarm Silence lt sp gt SIL lt cr gt 0 OFF lt sp gt SIL lt sp gt data 2 lt cr gt 1 ON STAT Run Status lt sp gt STAT lt cr gt x X X1 0 idle or 1 run x2 menu STP Maximum Steps lt sp gt STP lt cr gt 1 1 Step lt sp gt STP lt sp gt data 2 lt cr gt 2 2 Steps 3 3 Steps STOP Menu Stop lt sp gt STOP menu lt cr gt n Stop Menu n TCMP Temperature lt sp gt TCMP lt cr gt 0 OFF Compensation lt sp gt
19. end of text characters 2 command syntax with ANSI X3 28 Protocol lt STX gt lt space gt lt data 1 gt lt ETX gt Enter in ASCII lt STX gt lt space gt lt A1LO gt lt optional carriage return gt lt ETX gt The hex string will be 023F2041314C4F03 lt STX gt Optional Carriage space Return ASCII l Lo Characters lt ETX gt HEX Value 02 3F 20 41 314C 4F 03 First response from the Series 733 734 lt ACK gt The lt ACK gt hex response string is 06 Your computer s confirming response lt EOT gt The lt EOT gt response hex string is 04 Second response from the Series 733 734 lt STX gt lt current A1LO value gt lt carriage return gt lt ETX gt The hex string is 023530302003 lt STX gt ASCII 5 Characters 0 0 lt cr gt lt ETX gt HEX L a b Value 02 35 30 30 20 03 Your computer s next response lt ACK gt or lt NAK gt if the message needs to be repeated The hex string is 06 or 15 Final response from the Series 733 734 lt EOT gt The hex string is 04 How to Use Data Communications Commands Command Summary Series 733 734 Data Communications Table 5 Command Summary Name Description Read and or Write Syntax Range 9 data 1 Add ETX amp STX with ANSI X3 28 Protocol data 2 with Read and Write Simple A1HI Zone 1 Alarm High lt sp gt A1HI lt c
20. gt 0 J t c 32 to 1382 F 0 to 750 C 1 K t c 32 to 2282 F 0 to 1250 C 2 E t c 32 to 1220 F 0 to 660 C 3 RTD 32 to 1112 F 0 to 600 C INP2 Zone 2 Input Type lt sp gt INP2 lt cr gt lt sp gt INP2 lt sp gt data 2 lt cr gt 0 J t c 32 to 1382 F 0 to 750 C 1 K t c 32 to 2282 F 0 to 1250 C 2 E t c 32 to 1220 F 0 to 660 C 3 RTD 32 to 1112 F 0 to 600 C 4 0 5V 500 to 3500 units 5 4 20mA 500 to 3500 units 6 0 10V 500 to 3500 units 7 0 20mA 500 to 3500 units LAT Alarm Latching lt sp gt LAT lt cr gt lt sp gt LAT lt sp gt data 2 lt cr gt 0 Non latched alarms 1 Latched alarms LOC Keyboard Lock lt sp gt LOC lt cr gt lt sp gt LOC lt sp gt data 2 lt cr gt 0 Enable prompt change 1 Disable prompt change LOOP Loop Failure lt sp gt LOOP lt cr gt lt sp gt LOOP lt sp gt data 2 lt cr gt 0 Loop fail check OFF 1 Loop fail check ON LI Logic Input Test lt sp gt LI lt cr gt Table continued on the next page 18 WATLOW Series 733 734 Response depends on 733 hard ware and LI switch positions Change a switch and retry a switch change logic data chg How to Use Data Communications Name Description Read and or Write Syntax Range data 1 Add ETX amp STX with ANSI X3 28 Protoco
21. ific prompt p 17 19 Sets a specific prompt to a specific value p 17 19 10 WATLOW Series 733 734 How to Use Data Communications See Syntax Example Format For your benefit we re presenting message response examples with syntax required for Series 733 734 communication Information bracketed by lt gt indi cates a description rather than literal characters We show each ASCII character that you must transmit to the Series 733 734 including space between the charac ters A space is itself an ASCII character hex 20 For clarity we also represent each ASCII character as a hexadecimal pair The pairs are spread apart on the page for easy reading However electronic devices see the hex pairs all together in strings with no spaces in between For instance from the example just below you want to set the Alarm 1 Low A1LO prompt to 500 Notice the syntax just below which uses the command lt space gt A1LO lt space gt 500 lt Space gt A ASCII ri Characters Opave 0 Figure 5 0 lt CR gt Salis 733 734 HEX L i General Message Value 3D 20 41 31 4C 4F 20 35 30 30 0D Syntax Example To send this message key the ASCII characters into your computer or write them into your program The computer in turn will send a string similar to the one at the bottom of the example 3D2041314C4F20353030 Notice that we haven t mentioned protocol here or any characters added to this syntax by a protocol With XO
22. l data 2 Oe m m a nd S MDKY Mode Key Action lt sp gt MDKY lt sp gt 1 lt cr gt 1 One MODE Key press MDL Model Number lt sp gt MDL lt cr gt x1 3 or 4 horiz or vert unit Responds 73x xx x x2 amp x3 Last two See Model p 21 characters of model AA XX x4 Software rev 0 9 or A X Table 5 a Command Summary MENU Menu Step lt sp gt MENU lt sp gt menu Data entered must be within with Read and lt sp gt step lt cr gt individual prompt guidelines Dr lt sp gt MENU lt sp gt menu lt sp gt i e SP1 R1L to R1H etc Write Simple step lt sp gt sp1 lt sp gt sp2 lt sp gt Enter data for sp2 and events Syntax and Data hours or minutes lt sp gt minutes or even if they are not available Range Responses seconds lt sp gt events lt cr gt See 733 4 Program Manual MODE Mode Status lt sp gt MODE lt cr gt 0 Operation mode 1 Program mode 2 Setup mode 3 Service mode 4 Calibration mode MS Melt Cycle lt sp gt MS lt cr gt 0 Melt cycle OFF lt sp gt MS lt sp gt data 2 lt cr gt 1 Melt cycle ON PB1 Zone 1 Prop Band lt sp gt PB1 lt cr gt 0 to 999 F lt sp gt PB1 lt sp gt data 2 lt cr gt 0 to 555 C PB2 Zone 2 Prop Band lt sp gt PB2 lt cr gt 0 to 999 F lt sp gt PB2 lt sp gt data 2 lt cr gt 0 to 555 C 0 to 999 Units RA1 Zone 1 Rate lt sp gt RA1 lt cr gt 0 to 9 99 minutes lt sp gt RA1 lt sp gt data 2 lt cr gt RA2 Zon
23. pts and open its serial communication port in software Then begin to talk by transmitting a message to the Series 733 734 You stop communicating with XON XOFF Proto col simply by ceasing to send messages XON XOFF Command Example The general command syntax is the one you ve already seen Each command uses a Slightly different variation of it depending on the number of arguments required for a message e You want to change the Alarm 1 Low A1LO value to 500 The command will do the job The syntax with XON XOFF Protocol requires an ending Carriage Return lt Cr gt Command Syntax with XON XOFF Protocol lt Space gt data 1 lt space gt data 2 lt cr gt With the Command data 1 is the Series 733 734 prompt in this case Alarm 1 Low A1LO Data 2 is the value you want to set for that prompt in this example 500 Enter in ASCII lt space gt A1LO lt space gt 500 lt cr gt The hex string will be 3D2041314C4F203530300D lt Space gt A ASCII Characters Space 0 0 lt CR gt ux Litt Value 3D 20 41 31 4C 4F 20 35 30 30 OD Response from the Series 733 734 It sends an XOFF when a carriage return is received and then an XON when the unit is done processing the command e The complete list of Commands is in Table 5 Pages 17 19 lt XOFF gt lt XON gt 13 11 12 WATLOW Series 733 734 How to Use Data Communications XON XOFF XON XOFF Command Example You w
24. r gt Process Alarm A1LO to R1H Syntax and Data lt sp gt A1HI lt sp gt data 2 lt cr gt Deviation Alarm Range Responses 0 to 555 C 0 to 999 F A1LO Zone 1 Alarm Low lt sp gt A1LO lt cr gt Process Alarm R1L to A1HI lt sp gt A1LO lt sp gt data 2 lt cr gt Deviation Alarm 0 to 555 C 0 to 999 F A2HI Zone 2 Alarm High lt sp gt A2HI lt cr gt Process Alarm A2LO to R2H lt sp gt A2HI lt sp gt data 2 lt cr gt Deviation Alarm 0 to 555 C 0 to 999 F or Units A2LO Zone 2 Alarm Low lt sp gt A2LO lt cr gt Process Alarm R2L to A2HI lt sp gt A2LO lt sp gt data 2 lt cr gt Deviation Alarm 0 to 555 C 0 to 999 F or Units AL1 Zone 1 Alarm Type lt sp gt AL1 lt cr gt 0 Process Alarm lt sp gt AL1 lt sp gt data 2 lt cr gt 1 Deviation Alarm 2 No Alarm AL2 Zone 2 Alarm Type lt sp gt AL2 lt cr gt 0 Process Alarm lt sp gt AL2 lt sp gt data 2 lt cr gt 1 Deviation Alarm 2 No Alarm ALM Alarm Status lt sp gt ALM lt cr gt 0 No alarms occurring Writing a 0 will clear lt sp gt ALM lt sp gt 0 lt cr gt 1 A1HI occurring all alarms if all alarm 2 A1LO occurring conditions no longer 4 A2HI occurring exist 8 A2LO occurring AUT1 Zone 1 Auto tune lt sp gt AUT1 lt cr gt 0 No auto tuning lt sp gt AUT1 lt sp gt data 2 lt cr gt 1 Slow response tuning 2 Medium response tuning 3 Fast response tuning AUT2 Zone 2 Auto tune lt sp
25. re half duplex system There are only two lines both lines used for transmitting and receiving Only one device the computer or the control can be speaking at a time The Series 733 734 requires a 7 millisecond delay between transmission and receipt of data With EIA TIA 485 you can have from one to thirty two Series 733 734 controls connected to a com puter This diagram is a typical wiring example The connections on the host computer may vary depending on models See page 7 for information about serial interfaces Refer to your computer user s manual for more information Jo Twisted Pair Wire q tT Series 733 1 DODO ODOO a Common Pin 8 EIA TIA 485 Interface Series 733 2 DOWNWDOOO H Connecting the Control and the Computer Remove power from both the Series 733 734 and your computer before connecting them together This prevents noise or static interference from entering the data communication lines Assemble a cable and the appropriate wiring at your com puter Refer to the wiring on pages 4 through 6 As soon as you connect the data communications lines you may apply power to your system 6 WATLOW Series 733 734 How to Use Data Communications Configuration Figure 4 Internal ElA TIA 422 Series amp EIA TIA 423 Switch 733 734 Location and Selec rear view P tion a NOTE The Series 733 734 leaves the factory configured for EIA TIA 423 opera How to Set
26. st refrain from altering prompts which do not appear on the Series 733 734 front panel For example do not send an A1LO command page 17 to a Series 733 734 not equipped with alarm outputs The exception to this rule concerns the MENU command which requires valid data for SP2 Set Point 2 and events even though the hardware is not present in the particular Series 733 734 20 WATLOW Series 733 734 How to Use Data Communications Model Number 73_A AA jeg 733 734 One or two channel microprocessor based time and temperature control 24V VAC power input Order power supply and connector kit s separately below Display Orientation 3 Horizontal 4 Vertical Display Location A Integral local Input Type 1 Single thermocouple type J K E 2 _ Single RTD 1 curve selectable 4 Dual thermocouple type J K E Order output types 1 amp 2 5 Dual RTD 1 curve selectable Order output types 1 amp 2 6 Dual Input Channel 1 thermocouple type J K E and Channel 2 process 0 5V VDC 0 10V VDC 0 20mA 4 20mA Order output types 1 amp 2 Dual zone units must use ungrounded thermocouples Output 1 Type B _ Solid state relay with RC suppression form A 0 4A C Switched DC open collector non isolated D Mechanical relay form A 1A with suppression E Mechanical relay form A 1A without suppression F Process 4 20mA non
27. t the beginning of a message and ETX characters at the end Device Address If you are using the ANSI X3 28 Protocol you must have a device address identifi cation number A Watlow EIA TIA 422 multidrop network can handle up to 10 devices with this protocol EIA TIA 485 can handle up to 32 devices Set the address number with the Series 733 734 in the Addr prompt under the Setup menu ASCII Equivalent 0 9 0 9 10 31 A V Starting Communications in ANSI X3 28 Protocol Here s the syntax for starting communications with ANSI X3 28 Protocol The master device your computer must initiate the data link The example below uses the ASCII number 4 as a Series 733 734 device address Enter in ASCII using this syntax lt Address 4 gt lt ENQ gt ASCII 4 Characters J Ra HEX Value 34 05 Response from the 733 734 lt Address 4 gt lt Acknowledge ACK gt ASCII 4 Characters il lt ACK gt HEX Value 34 06 14 WATLOW Series 733 734 How to Use Data Communications ANSI X3 28 Stopping Communications in ANSI X3 28 Protocol The master device your computer must end communications with Device 4 by using Data Link Escape DLE and End of Transmission EOT characters Enter in ASCII lt DLE gt lt EOT gt ASCII Characters oS lt EOT gt HEX Value 10 04 Response from the 733 734 None ANSI X3 28 Command Example The Command sets a specific 733 734 prompt to a specific v
28. the EIA TIA 422 amp EIA TIA 423 Hardware aed Protocol Switches for 73xx xxxx xBxx Units Only EIA TIA 422 C2 EIA TIA 423 C1 SS Communications Board The EIA TIA 422 or EIA TIA 423 switches are on the Communication Module Board A007 1830 inside the control Figure 4 shows the approximate location of this board Select C1 on both switches for EIA TIA 423 or C2 on both switches for EIA TIA 422 operation Both switches must be set to the same position To change the position of the switches Watlow recommends using a properly grounded wrist strap before opening this control 1 Remove power from the Series 733 734 Remove the two snap on connectors from the back of the unit Remove the two rear cover screws from the back of the unit Remove the rear cover and locate the switches See Figure 4 Set both switches to C1 for EIA TIA 423 or to C2 for EIA TIA 422 Replace the rear cover secure the two rear cover screws Re attach the two snap on connectors Apply power to the control NOGSONN Your Computer s Serial Interface The Key To Network Connections You can connect a data communication equipped Series 733 734 to any computer with an EIA TIA 422 or EIA TIA 423 EIA TIA 232 compatible or EIA TIA 485 serial interface The IBM PC with an EIA TIA 232 serial output card for instance will talk to a single EIA TIA 423 equipped Series 733 734 For a multiple 733 734 network with the same PC you ll need an EIA
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