Rockwell Automation 1755-OF8 GuardPLC Controller Systems - Manual (Page 306)

306 Publication 1753-UM001C-EN-P - March 2010
Appendix B System Signal Variables
Force Time milliseconds Read Remaining running time during forcing; 0 if Force is inactive.
[DINT]
NON-SAFE
Power Supply 0-255 Read GuardPLC 1200 and GuardPLC 2000
Controllers
0 = normal
1 = error of input power supply 24 VDC
2 = error of battery
4 = module error of power supply 5 V
8 = module error of power supply 3.3 V
16 = 5 V undervoltage
32 = 5 V overvoltage
64 = 3.3 V undervoltage
128 = 3.3 V overvoltage
255 = status does not exist
[BYTE]
NON-SAFE GuardPLC 1600 and GuardPLC 1800
Controllers
0 = normal
1 = 24 VDC undervoltage
4 = 5 V undervoltage
8 = 3.3 V undervoltage
16 = 3.3 V overvoltage
[BYTE]
NON-SAFE
System Tick High
System Tick Low milliseconds Read Ring counter with 64 bits, incremented in millisecond steps. [UDINT]
SAFE
Temperature State 0, 1, 2, 3,
255 Read 0 = normal
1 = high
2 = faulty
3 = very high
255 = status does not exist
[BYTE]
NON-SAFE (but for additional switch-off)
(1) Binary values are ORed.
System Variable Unit/Value Read/Write Description
(1)