Allen-Bradley Logix5000 Reference Manual

Rockwell Automation Publication 1756-RM003N-EN-P - October 2011 175
Input/Output Instructions (MSG, GSV, SSV, IOT) Chapter 4
Example: Follow these steps to reconfigure an I/O module.
1. Set the required member of the configuration tag of the module to the new
value.
2. Send a Module Reconfigure message to the module.
When reconfigure[5] is set, set the high alarm to 60 for the local module in slot 4.
The Module Reconfigure message then sends the new alarm value to the module.
The one shot instruction prevents the rung from sending multiple messages to
the module while the reconfigure[5] is on.
Relay Ladder
Structured Text
IF reconfigure[5] AND NOT reconfigure[6]THEN
Local:4:C.Ch0Config.HAlarmLimit := 60;
IF NOT change_Halarm.EN THEN
MSG(change_Halarm);
END_IF;
END_IF;
reconfigure[6] := reconfigure[5];
TIP
We recommend that you always include an XIO of the MSG.EN bit as an
in-series MSG rung precondition.

Allen-Bradley Logix5000 Specifications

General

Brand	Allen-Bradley
Model	Logix5000
Category	Controller
Language	English