Omega A2400 manual $1ID Tank Farm, #1ID Tank Farm, 1ID Tank Farm 1CD

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Command Set 4-9

Identification (ID)

The IDentification command allows the user to write a message into the nonvolatile memory which may be read back at a later time with the Read IDentification (RID) command. It serves only as a convenience to the user and has no affect on the module operation. Any message up to 16 characters long may be stored in memory. Useful information such as the location, calibration data, or model number may be stored for later retrieval. The ID command is write protected. Since the ID command has a variable length, the command checksum is not supported.

Command:

$1ID TANK FARM 1

Response:

*

Command:

#1ID TANK FARM 1

Response:

*1ID TANK FARM 1CD

Long Prompt (LP)

The Long Prompt command allows the user to specify a desired long prompt ASCII character. A two character hexadecimal value is used to define the desired ASCII character prompt.

Note: Long Prompt command may be sent to the module in either normal addressing or Extended Addressing mode.

The user-defined long form prompt is only recognized by the module when the module is in the Extended Addressing mode. Avoid using the following hex codes for prompts: $00, $0D, $23, $24 which are ASCII characters NULL, CR, #, $ respectively. Using these codes for prompts will cause a COMMAND ERROR when opening a channel in Extended Addressing mode. See Chapter 7 for details on the Extended Addressing mode.

Command:

$1LP25

(25=%)

Response:

*

 

Command:

#1LP25

 

Response:

*1LP255E

 

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Contents User’sGuide Servicing North America For immediate technical or application assistanceServicing Europe BOX Revised 4/17/95Omega Engineering ONE Omega Drive STAMFORD, CT Phone 1-800-DAS-IEEETable of Contents Chapter Getting Started IntroductionSystem Overview Leased Lines$1RD +99999.99Default Mode Page Block Diagram Chapter Functional DescriptionFunctional Description Pinout RS-485 Termination A2400 OperationCharacter Filter Page Programmable Delay Times Page Command $1RD Response *+99999.99 Chapter CommunicationsDO, OC, CC, RD, REA, RID, RLP, RS, RSP, RSU Communication RS-485 Multidrop System DATA+Page Chapter A2400 Command Set Command StructureMiscellaneous Protocol Notes Data StructureWrite Protection Response StructureCommand Checksum Long Form Responses?1 Syntax Error ?1 BAD Checksum$1WEF A2400 User Commands A2400 Command Set RT3Command $1DO01 Response Command #1DO01 Response *1DO014F Command DescriptionsCommand 01CC Response Response *01CC11 Digital Output do Closed Channel CC ExtendedCommand $1DO00 Response Command #1DO00 Response *1DO004E Extended Address EA$1ID Tank Farm #1ID Tank Farm1ID Tank Farm 1CD Command 01OC Response Response *01OCED Open Channel OC ExtendedRead Data RD #1RID $1RIDTank Farm 1RID Tank Farm 11F$1RSP $1RSU#1RSU #1RSPRead Time Delay 1 RT1 Response *1RT1+00100.00DC Read Time Delay 2 RT2Response *+00100.00 Page Page Short Prompt SP Address Error Command 01WE Response *01WE27Error Messages BAD ChecksumSyntax Error Command ErrorParity Error Value ErrorChapter Setup Information/SetUp Command Command Syntax$1SUbyte 1byte 2byte 3byte Byte Byte 1 Ascii Printable Characters HEX AsciiParity Baud RateCommand $1RS Response *31070000 Command $1WE Response Command $1SU31020000Command $1RS Response *31020102 Command $1WE Byte 2 Linefeed, Parity and Baud Rate Command $1RR ResponseBit BaudNormal addressing Chapter Delay Time Programming Delay Time Programming Page Command $1T3+00050.00 Set T3 to 50 ms Response Command $1RT1 Response *+00100.00Chapter Power Supply Chapter Troubleshooting Symptom RS-232 Module is not responding to commandsSymptom RS-485 Module is not responding to commands Command 01WE Response Open/Close Channel CommandsChapter Extended Addressing Typical system overview Command 01CC Response Command 01OC ResponseCommand $1RD Response +00100.00 Typical $2RD +00123.45 Command 02OC ResponseStructured Addressing Extended Address SyntaxImplied OC Command OC and CC Command FormatsImplied CC Command Command ResponseCommand Response *01OC1D Single Command Module Address Command 01$1RD Response *+00100.00Explicit Open and Close Channel Commands Command 01CC Response 01CC11 ‘11’ is the checksum Command 02OC Response 02OC1E ‘1E’ is the checksumChapter Transparent Mode Transparent Mode FunctionsA2400 interfacing a PLC to a leased-line modem A2400 networking several RS-232 devices to a host computer A2400 interfacing a laboratory instrument with modules Transparent Mode Adding secondary control using A2400 modules Transparent Mode WARRANTY/DISCLAIMER Shop online at omega.com