Rockwell Automation 1756-OF8H ControlLogix HART Analog I/O Modules - Manual (Page 85)

Rockwell Automation Publication 1756-UM533C-EN-P - February 2011 85
1756-OF8H HART Analog Output Module Chapter 6
1756-OF8H Module Fault
and Status Reporting The 1756-OF8H modules multicast status and fault data to the controller with
their channel data. The fault data is arranged to let you choose the level of
granularity you desire 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.
Table 16 lists tags that you can examine in ladder logic to indicate when a
fault occurred.
Table 16 - Tags That Can Be Examined in Ladder Logic
Tag Description Tag Name
Analog and HART PV Tag Name
Analog and HART by Channel
(1)
Module Fault Word This word provides fault summary reporting. ModuleFaults ModuleFaults
Channel Fault Word This word provides clamp and communication
fault reporting. ChannelFaults
ChxFault ChannelFaults
ChxFault
Channel Status Tags These words, one per channel, provide individual
channel limit, hold, open wire, ramp status, and
calibration faults. ChxStatus Chx.DeviceStatus
Chx.DeviceStatus.AlarmStatus
HART Faults This provides HART communication status. HARTFaults, ChxHARTFault Chx.DeviceStatus.HARTFault
HART Device Status This provides HART field device health. HART.ChxDevice Status Chx.DeviceStatus.FieldDeviceStatus
(1) Available only for 1756-OF8H firmware revision 2.1.