Omega manual A2400 Command Set, RT3

Page 27

Command Set 4-6

Each A2400 user command is described in detail following Table 4.1. All of the commands are listed in alphabetical order according to command nomenclature.

Table 4.1 A2400 Command Set

Command and Definition

Typical

Typical

 

 

Command

Response

 

 

Message

Message

 

 

 

($ prompt)

DO

Digital Output

$1DO01

*

RD

Read Data

$1RD

*+99999.99

REA

Read Ex. Address

$1REA

*3031

RID

Read Identification

$1RID

*TANK FARM 1

RLP

Read Long Prompt

$1RLP

*7D

RS

Read Setup

$1RS

*31070000

RSP

Read Short Prompt

$1RSP

*7B

RSU

Read Setup

$1RSU

*31070000

RT1

Read Time delay 1

$1RT1

*+00100.00

RT2

Read Time delay 2

$1RT2

*+00352.00

RT3

Read Time delay 3

$1RT3

*+00050.00

WE

Write Enable

$1WE

*

Write Protected Commands

 

 

EA

Extended Address

$1EA3031

*

ID

IDentification

$1ID TANK FARM 1

*

LP

Set Long Prompt

$1LP25

*

RR

Remote Reset

$1RR

*

SP

Set Short Prompt

$1SP40

*

SU

Setup

$1SU31070000

*

T1

Set Delay Time 1

$1T1+00100.00

*

T2

Set Delay Time 2

$1T2+00352.00

*

T3

Set Delay Time 3

$1T3+00050.00

*

These A2400 Commands are Exclusively for Extended Address mode

CC

Close Channel

{01CC

*

OC

Open Channel

{01OC

*

Image 27
Contents User’sGuide Servicing North America For immediate technical or application assistanceServicing Europe STAMFORD, CT Phone 1-800-DAS-IEEE Revised 4/17/95Omega Engineering ONE Omega Drive BOXTable of Contents Introduction Chapter Getting StartedLeased Lines System Overview+99999.99 $1RDDefault Mode Page Chapter Functional Description Block DiagramFunctional Description Pinout RS-485 Termination A2400 OperationCharacter Filter Page Programmable Delay Times Page Chapter Communications Command $1RD Response *+99999.99DO, OC, CC, RD, REA, RID, RLP, RS, RSP, RSU Communication DATA+ RS-485 Multidrop SystemPage Command Structure Chapter A2400 Command SetResponse Structure Data StructureWrite Protection Miscellaneous Protocol NotesLong Form Responses Command Checksum?1 Syntax Error ?1 BAD Checksum$1WEF A2400 User Commands RT3 A2400 Command SetClosed Channel CC Extended Command DescriptionsCommand 01CC Response Response *01CC11 Digital Output do Command $1DO01 Response Command #1DO01 Response *1DO014FExtended Address EA Command $1DO00 Response Command #1DO00 Response *1DO004E$1ID Tank Farm #1ID Tank Farm1ID Tank Farm 1CD Command 01OC Response Response *01OCED Open Channel OC ExtendedRead Data RD 1RID Tank Farm 11F $1RIDTank Farm #1RID#1RSP $1RSU#1RSU $1RSPRead Time Delay 1 RT1 Response *1RT1+00100.00DC Read Time Delay 2 RT2Response *+00100.00 Page Page Short Prompt SP BAD Checksum Command 01WE Response *01WE27Error Messages Address ErrorValue Error Command ErrorParity Error Syntax ErrorChapter Setup Information/SetUp Command Command Syntax$1SUbyte 1byte 2byte 3byte Byte HEX Ascii Byte 1 Ascii Printable CharactersBaud Rate ParityCommand $1RS Response *31070000 Command $1WE Response Command $1SU31020000Command $1RS Response *31020102 Command $1WE Baud Command $1RR ResponseBit Byte 2 Linefeed, Parity and Baud RateNormal addressing Chapter Delay Time Programming Delay Time Programming Page Command $1RT1 Response *+00100.00 Command $1T3+00050.00 Set T3 to 50 ms ResponseChapter 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 02OC Response Command 01OC ResponseCommand $1RD Response +00100.00 Typical $2RD +00123.45 Command 01CC ResponseExtended Address Syntax Structured AddressingCommand Response OC and CC Command FormatsImplied CC Command Implied OC CommandCommand Response *01OC1D Single Command Module Address Command 01$1RD Response *+00100.00Explicit Open and Close Channel Commands Command 02OC Response 02OC1E ‘1E’ is the checksum Command 01CC Response 01CC11 ‘11’ is the checksumTransparent Mode Functions Chapter Transparent ModeA2400 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