Enter A Message - Allen-Bradley ControlLogix System 1756-L1 User Manual

14-18 Communicate with an RSView Project over a ControlNet™ Network

Enter a Message

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Publication 1756-UM001E-EN-P - August 2002
A. Enter a MSG instruction and associated input instruction (s).
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B. In the MSG instruction, type a name for the message control tag
and press the Enter key.
C. In the MSG instruction, right-click the message control tag and
select New tag_name. (In older revisions of the software, the
menu option is Create tag_name.)
D. From the Scope list, select name_of_controller(controller),
and click OK.
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E. Enter message.EN.
where:
message is the message control tag from step B.
F. If your message reads or writes integers (not REALs), use a
buffer of INTs in the message.
• ControlLogix controllers execute more efficiently and use less
• In this procedure, you use a PLC-5 Typed Read or PLC-5
• Use an INT buffer in the message and move the data into or
Message
Message Control
Type - Unconfigured
Message Control
memory when working with 32-bit integers (DINTs). Use the
DINT data type for integers whenever possible.
Typed Write message, which requires 16-bit integers.
out of the buffer as required.
MSG
? ...
MSG
message ...
EN
DN
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EN
DN
ER
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