Rockwell Automation Publication 5069-UM002A-EN-P - January 2019 193
Develop Control Applications Chapter 8
Access the Module Object
from an Add-On Instruction
The MODULE object provides status information about a module. To select a
particular module object, set the Object Name operand of the GSV/SSV
instruction to the module name. The specified module must be present in the
I/O Configuration section of the controller organizer and must have a device
name.
Create the Add-On Instruction
You can access a MODULE object directly from an Add-On Instruction.
Previously, you could access the MODULE object data but not from within an
Add-On Instruction.
You must create a Module Reference parameter when you define the Add-On
Instruction to access the MODULE object data. A Module Reference
parameter is an InOut parameter of the MODULE data type that points to the
MODULE Object of a hardware module. You can use module reference
parameters in both Add-On Instruction logic and program logic.
For more information on the Module Reference parameter, see the Logix
Designer application online help and the Logix 5000 Controllers Add-On
Instructions Programming Manual, publication
1756-PM010.
The MODULE object uses the following attributes to provide status
information:
•EntryStatus
• FaultCode
•FaultInfo
• FWSupervisorStatus
•ForceStatus
• Instance
•LEDStatus
•Mode
•Path
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