User manual

160 Rockwell Automation Publication 1756-UM001O-EN-P - October 2014
Chapter 10 Develop Applications
Figure 38 - Add-On Instructions
Access the Module Object
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
With Logix Designer application, version 24.00.00 and later, 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 Logix5000
Controllers Add-On Instructions Programming Manual, publication
1756-PM010
and the Logix Designer application online help.
The MODULE object uses the following attributes to provide status
information:
• EntryStatus
• FaultCode
Controller Organizer
Instruction Toolbar