Module status level
(Original Document)
About us
Module status objects
These objects are common to all the modules in the range.
Object
Symbol
Meaning
%Ir.m.MOD.ERR
MOD_FAULT
module fault bit
%MWr.m.MOD.2
FAULTY_MOD
FAULTY_CH
MOD_CNF_FLT
MISSING_MOD
bit 0 = 1 internal fault: module failure
bit 1 = 1 channel operating fault (see channel status)
bit 2 to bit 4 reserved
bit 5 = 1configuration fault: difference between the value configured and that read
bit 6 = 1 module missing or off
bit 7 = reserved
They give information about the module status.
The value %MWr.m.MOD.1 is updated by an explicit command:
READ_STS applied to the module.
Method
If %Ir.m.Mod.Err = 1 (implicit), the READ_STS command must be executed in order to obtain additional information.