Omega A2400 manual Command $1DO00 Response Command #1DO00 Response *1DO004E, Extended Address EA

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Command Set 4-8

To turn the output off you could use the command:

Command: $1DO00

Response: *

Command: #1DO00

Response: *1DO004E

Digital output 0 shares the connector pin with the Alternate RTS. Bit 3 of byte 4 of the SetUp command is used to configure this pin as either digital output or RTS function. See chapter 5 for details.

The digital output setting is not stored in nonvolatile memory. If a power failure occurs, the digital output will be 0 upon power up.

The DO command is the only means of changing the digital output. There is no software provision to read the state of the digital output.

Extended Address (EA)

The Extended Address (EA) command allows the user to set the two-byte address to be used with Extended Addressing (see Chapter 7). The argument of the command specifies the hex ASCII values of the two characters to be used as the Extended Address. For example, if the address is to be set for characters ‘01’:

Command: $1EA3031

Response: *

Command: #1EA3031

Response: *1EA3031A8

Note that ‘30’ and ‘31’ are the hex ASCII values for characters ‘0’ and ‘1’ respectively.

The EA command is write-protected and must be preceded with a WE command.

The address data may be read back with the Read Extended Address (REA) command.

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Contents User’sGuide Servicing Europe Servicing North AmericaFor immediate technical or application assistance Omega Engineering ONE Omega Drive Revised 4/17/95BOX STAMFORD, CT Phone 1-800-DAS-IEEETable of Contents Introduction Chapter Getting StartedLeased Lines System Overview+99999.99 $1RDDefault Mode Page Chapter Functional Description Block DiagramFunctional Description Pinout Character Filter RS-485 TerminationA2400 Operation 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 SetWrite Protection Data StructureMiscellaneous Protocol Notes Response StructureLong Form Responses Command Checksum$1WEF ?1 Syntax Error?1 BAD Checksum A2400 User Commands RT3 A2400 Command SetCommand 01CC Response Response *01CC11 Digital Output do Command DescriptionsCommand $1DO01 Response Command #1DO01 Response *1DO014F Closed Channel CC ExtendedExtended Address EA Command $1DO00 Response Command #1DO00 Response *1DO004E1ID Tank Farm 1CD $1ID Tank Farm#1ID Tank Farm Read Data RD Command 01OC Response Response *01OCEDOpen Channel OC Extended Tank Farm $1RID#1RID 1RID Tank Farm 11F#1RSU $1RSU$1RSP #1RSPResponse *+00100.00 Read Time Delay 1 RT1Response *1RT1+00100.00DC Read Time Delay 2 RT2 Page Page Short Prompt SP Error Messages Command 01WE Response *01WE27Address Error BAD ChecksumParity Error Command ErrorSyntax Error Value Error$1SUbyte 1byte 2byte 3byte Chapter Setup Information/SetUp CommandCommand Syntax Byte HEX Ascii Byte 1 Ascii Printable CharactersBaud Rate ParityCommand $1RS Response *31020102 Command $1WE Command $1RS Response *31070000Command $1WE Response Command $1SU31020000 Bit Command $1RR ResponseByte 2 Linefeed, Parity and Baud Rate BaudNormal 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 Symptom RS-485 Module is not responding to commands Chapter TroubleshootingSymptom RS-232 Module is not responding to commands Chapter Extended Addressing Command 01WE ResponseOpen/Close Channel Commands Typical system overview Command $1RD Response +00100.00 Typical $2RD +00123.45 Command 01OC ResponseCommand 01CC Response Command 02OC ResponseExtended Address Syntax Structured AddressingImplied CC Command OC and CC Command FormatsImplied OC Command Command ResponseExplicit Open and Close Channel Commands Command Response *01OC1D Single Command Module AddressCommand 01$1RD Response *+00100.00 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