Rockwell Automation 1756-XXXX ControlLogix Analog I/O Modules - Manual (Page 141)

Publication 1756-UM009C-EN-P - December 2010 141
Temperature-measuring Analog Modules (1756-IR6I, 1756-IT6I, and 1756-IT6I2) Chapter 6
Fault and Status Reporting The 1756-IR6I, 1756-IT6I, and 1756-IT6I2 modules multicast status and fault
data to the owner and/or listening controller with its channel data. The fault
data is arranged in such a manner as to let you choose the level of granularity
desired for examining fault conditions.
Three levels of tags work together to provide increasing degree of detail as to
the specific cause of faults on the module.
The table lists tags that can be examined in ladder logic to indicate when a fault
has occurred.
Fault Word Tags
Tag Description
Module Fault
Word This word provides fault summary reporting. Its tag name is
ModuleFaults.
Channel Fault
Word This word provides underrange, overrange, and communication fault
reporting. Its tag name is ChannelFaults.
Channel Status
Words This word provides individual channel underrange and overrange fault
reporting for process alarms, rate alarms, and calibration faults. Its tag
name is ChxStatus.
IMPORTANT
Differences exist between floating point and integer modes as
they relate to module fault reporting. These differences are
explained in the following sections.