Rockwell Automation 1755-OF8 GuardPLC Controller Systems - Manual (Page 305)

Publication 1753-UM001C-EN-P - March 2010 305
Appendix
B
System Signal Variables
Introduction
Programming Controller
Data The controller supports system variables that you can configure.
The system variables are defined as:
•
SAFE: the controller can use this information in safety-related
functions.
•
NON-SAFE: additional information that safety functions must not
rely on.
These are the system variables.
Topic Page
Programming Controller Data 305
I/O Variables 307
System Variable Unit/Value Read/Write Description
(1)
Contact Assembly 1
Contact Assembly 2
Contact Assembly 3
Contact Assembly 4 true
false Write On true, the contact closes; on false the contact does not close.
Only available for a GuardPLC 2000 controller.
[BOOL]
NON-SAFE
Cooling Fan State 0, 1, 2 Read 0 = normal
1 = fans OK
2 = fan error
Only available for a GuardPLC 2000 controller.
[BYTE]
NON-SAFE
Cycle Time milliseconds Read Duration of the last cycle
[UDINT]
SAFE
Date Time Seconds
Date Time
Milliseconds seconds
milliseconds Read Time passed since 1970. An automatic switchover from summer to winter time is
not supported.
[UDINT]
NON-SAFE
Emergency Stop 1
Emergency Stop 2
Emergency Stop 3
Emergency Stop 4 true
false Write True triggers Emergency Off
[BOOL]
SAFE
Use these signals to force all inputs and outputs to the zero/OFF state from within
the user program.