Allen-Bradley 1791ES-IB8XOBV4 - Page 150

150 Rockwell Automation Publication 1791ES-UM001G-EN-P - November 2016
Appendix A Get Diagnostic Status from Modules by Using Explicit Messaging
Table 64 - Setting Hold/Clear for Communications Errors (test output)
Explicit Message Service Function Command (hex) Response (hex)
Service
Code
Class
ID
Instance ID Attribute ID Data
Size
Setting for output
state (hold or clear)
after communication
error
Get attribute
single
Reads whether hold or clear
is set as the output state
after a communication error
for a test output specified by
the instance ID. The setting
can be read for a specified
number of points.
OE 09 01…08 05 – 1 byte
00: Clear
01: Hold
Setting for output
state (hold or clear)
after communication
error
Set attribute
single
Sets whether hold or clear as
the output status after a
communication error for an
output specified by the
instance ID. Sets whether a
test output must hold its
state or clear (turn off) after
a communication error.
10 09 01…08 05 1 byte
00: Clear
01: Hold