Omega
manual
A2400 networking several RS-232 devices to a host computer
Troubleshooting
Error codes
Block Diagram
Default Mode
Programmable Delay Times
Warranty
Chapter A2400 Command Set
Chapter Power Supply
Chapter Transparent Mode
Page 62
Transparent Mode
10-3
Example 2. A2400 networking several
RS-232
devices to a host com- puter.
Figure 10.2 A2400 networking several
RS-232
devices to a host computer.
Page 61
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Image 62
Page 61
Page 63
Contents
User’sGuide
Servicing Europe
Servicing North America
For immediate technical or application assistance
BOX
Revised 4/17/95
Omega Engineering ONE Omega Drive
STAMFORD, CT Phone 1-800-DAS-IEEE
Table of Contents
Chapter Getting Started
Introduction
System Overview
Leased Lines
$1RD
+99999.99
Default Mode
Page
Block Diagram
Chapter Functional Description
Functional Description
Pinout
Character Filter
RS-485 Termination
A2400 Operation
Page
Programmable Delay Times
Page
Command $1RD Response *+99999.99
Chapter Communications
DO, OC, CC, RD, REA, RID, RLP, RS, RSP, RSU
Communication
RS-485 Multidrop System
DATA+
Page
Chapter A2400 Command Set
Command Structure
Miscellaneous Protocol Notes
Data Structure
Write Protection
Response Structure
Command Checksum
Long Form Responses
$1WEF
?1 Syntax Error
?1 BAD Checksum
A2400 User Commands
A2400 Command Set
RT3
Command $1DO01 Response Command #1DO01 Response *1DO014F
Command Descriptions
Command 01CC Response Response *01CC11 Digital Output do
Closed Channel CC Extended
Command $1DO00 Response Command #1DO00 Response *1DO004E
Extended Address EA
1ID Tank Farm 1CD
$1ID Tank Farm
#1ID Tank Farm
Read Data RD
Command 01OC Response Response *01OCED
Open Channel OC Extended
#1RID
$1RID
Tank Farm
1RID Tank Farm 11F
$1RSP
$1RSU
#1RSU
#1RSP
Response *+00100.00
Read Time Delay 1 RT1
Response *1RT1+00100.00DC Read Time Delay 2 RT2
Page
Page
Short Prompt SP
Address Error
Command 01WE Response *01WE27
Error Messages
BAD Checksum
Syntax Error
Command Error
Parity Error
Value Error
$1SUbyte 1byte 2byte 3byte
Chapter Setup Information/SetUp Command
Command Syntax
Byte
Byte 1 Ascii Printable Characters
HEX Ascii
Parity
Baud Rate
Command $1RS Response *31020102 Command $1WE
Command $1RS Response *31070000
Command $1WE Response Command $1SU31020000
Byte 2 Linefeed, Parity and Baud Rate
Command $1RR Response
Bit
Baud
Normal addressing
Chapter Delay Time Programming
Delay Time Programming
Page
Command $1T3+00050.00 Set T3 to 50 ms Response
Command $1RT1 Response *+00100.00
Chapter Power Supply
Symptom RS-485 Module is not responding to commands
Chapter Troubleshooting
Symptom RS-232 Module is not responding to commands
Chapter Extended Addressing
Command 01WE Response
Open/Close Channel Commands
Typical system overview
Command 01CC Response
Command 01OC Response
Command $1RD Response +00100.00 Typical $2RD +00123.45
Command 02OC Response
Structured Addressing
Extended Address Syntax
Implied OC Command
OC and CC Command Formats
Implied CC Command
Command Response
Explicit Open and Close Channel Commands
Command Response *01OC1D Single Command Module Address
Command 01$1RD Response *+00100.00
Command 01CC Response 01CC11 ‘11’ is the checksum
Command 02OC Response 02OC1E ‘1E’ is the checksum
Chapter Transparent Mode
Transparent Mode Functions
A2400 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
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