62 Rockwell Automation Publication 5094-UM001C-EN-P - April 2019
Chapter 4 Output Module Features
Data Echo
Data Echo automatically multicasts point data values that match the digital value
that was sent to the screw terminals of the module then.
A FLEX 5000 digital output module returns a value sent to it by the owner-
controller. The echoed value is either On or Off.
Fault and status data are also sent. This data is sent at the RPI.
Field Power Loss Detection
The Field Power Loss Detection feature monitors for the loss of power at an
output module point. When field power to the module is lost, a point-level fault
is sent to the controller to identify the exact point faulted.
Field Power Loss Detection has a corresponding tag that can be examined in the
user program if a fault occurs. For information on modules, see Appendix B
,
Module Tag Definitions on page 137
Fault and Status Reporting
The digital output modules multicast fault and status data with point data to the
owner and listening controllers. The data is returned via modules that you can
monitor in your Logix Designer application.
For more information on fault reporting, see Appendix A, Troubleshoot Your
Module on page 123.
Table 11 - GSV Instruction
To determine the following Examine this bit For this value
Forces are installed 0 1
No forces are installed 0 0
Forces are enabled 1 1
Forces are disabled 1 0
IMPORTANT For 5094-OB16 and 5094-OB16XT output modules only, an output must
remain in the On state for a minimum of 250 ms for an overload or short
circuit to be detected. However, if a short-circuit condition exists long term,
it is detected as long as the output is switching at a rate no faster than 1 ms.
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