Rockwell Automation 1797-IRT8 FLEX Ex Thermocouple/RTD/mV Input Module User Manual - Manual (Page 23)

Publication 1797-6.5.2 - February 2001
Understanding Configurable FLEX Ex Thermocouple/RTD/mV Input Module Features 2-9
Fault Alarm
The module has individual channel fault alarms for a broken or
detached wire. In any mode, if a broken/detached lead is detected,
the data value is forced to maximum. Once the alarm is issued, it
remains active as long as the input signal is faulted.
In mV mode, for input levels above 210mV, this bit is set.
In RTD mode, an open input will set this bit.
Range: 0 = normal,1 = wire off, excessive input fault detected.
Default = 0.
Chapter Summary In this chapter, we told you about the FLEX Ex system and the analog
I/O modules, and how they communicate with programmable
controllers.