Rockwell Automation 1755-OF8 GuardPLC Controller Systems - Manual (Page 323)

Publication 1753-UM001C-EN-P - March 2010 323
System Signal Variables Appendix B
Analog Input Signals for 1753-IF8XOF4 Modules
The 1753-IF8XOF4 module supports these analog input signals.
I/O Data Read/Write Description
Module.SRS Read Slot number (System.Rack.Slot)
Module.Type Read Module type: 0x001E
Module.Error.Code Read Error mask for the module
0x0000 I/O processing may be running with errors
0x0001 No I/O processing (CPU not in RUN)
0x0002 No I/O processing during start-up tests
0x0004 Manufacturing interface running
0x0010 No I/O processing due to incorrect configuration
0x0020 No I/O processing due to exceeded fault rate
0x0040/80 No I/O processing because configured module is not plugged in
AI.Error Code Read Error mask for all analog inputs
0x0001 Module error
0x0004 MEZ test, time monitoring of conversion
0x0008 FTZ test: walking bit of data bus faulty
0x0010 FTZ test: Operating voltages faulty
0x0020 MEZ test, active disconnection failed
0x0040 A/D conversion faulty
0x0080 MEZ test: cross links of MUX faulty
0x0100 MEZ test: walking bit of data bus faulty
0x0200 MEZ test: multiplexer addresses faulty
0x0400 MEZ test: operating voltages faulty
0x0800 MEZ test: measuring system (characteristic) faulty (unipolar)
0x1000 MEZ test: measuring system (final values, zero point) faulty
(unipolar)
0x8000 A/D conversion faulty (DRDY_HIGH)