Instruction Manual

320 Publication 1753-UM001C-EN-P - March 2010
Appendix B System Signal Variables
Digital Output Parameters for 1753-IB16XOB8 Modules
In addition to the output parameters in the table on page 318, the
GuardPLC 1753-IB16XOB8 module features these digital output
parameters.
— DO2[xx].2 Pole used Write Configures the channel for 2 pole operation.
0 channel DO2[xx] is not used for 2-pole operation.
1 channel DO2[01] is used for 2-pole operation with channel
DO1[04], or
channel DO2[02] is used for 2-pole operation with channel
DO1[08]
— Switch-on delay Write Sets switch-on delay for 2-pole tests, due to lamp load, inductive and
capacitive load
(1) xx = affected output channel of the controller or module.
I/O Data Read/
Write
Description
L+ Switching Outputs L- Switching Outputs
I/O Data Read/Write Description
DO.Error Code Read Error mask for all digital outputs
0x0001 Error in digital output range
0x0002 MEZ test of safety shutdown failed
0x0004 MEZ test, auxiliary supply failed
0x0008 FTZ test of test pattern failed
0x0010 MEZ test of test pattern of the output switch failed
0x0020 MEZ test of test pattern of the output switch (disconnection test of
outputs) failed
0x0040 MEZ test, active disconnection via watchdog failed
0x0080 FTZ test of the period monitoring causes an error.
0x0100 FTZ read back of the period monitoring causes an error
0x0200 All outputs switched off, total current exceeded
0x0400 FTZ test: 1. Temperature threshold exceeded
0x0800 FTZ test: 2. Temperature threshold exceeded
0x1000 FTZ test: Monitoring of auxiliary supply 1: Undervoltage
0x2000 FTZ test: Monitoring of auxiliary supply 2: Undervoltage
0x4000 Flip-flop of the supply monitoring (18V) causes undervoltage
0x8000 MEZ test of the period monitoring causes an error