Delta RMC101 - Manual (Page 355)

Ethernet 5.2
Communications 5-105
The core of this ladder segment is reading the EntryStatus and FaultCode attributes from the RMC
MODULE object using the GSV blocks. The MODULE objects are internal to the ControlLogix and
represent external modules. In the Instance Name field of the GSV blocks, type the name you
selected for the particular RMC module.
If the connection to the module is running, then the high four bits of the EntryStatus will be equal to 4
and the FaultCode will be equal to 0. This is described in the RSLogix 5000 online help's "Accessing
the MODULE Object" topic.
The above ladder masks off the low 12 bits of the EntryStatus using an AND block, and then sets the
RMCConnFault coil to indicate whether or not the connection is faulted.