Rockwell Automation AADvance Controller Configuration Guide - Manual (Page 216)

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Issue 07
Configuration Guide (AADvance Controller)
2) Select a slave link associated with a master object set to the TCP protocol.
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The editor slave link opens.
3) Check that the Ping Mode has been set to Do Not Ping.
Restart a Link When No Ping Mode is Set
When a slave module fails the master stops sending messages to it except for the ping
message (if one is configured). If the failed slave module later becomes "Healthy" the
master will automatically detect this change because the module will respond to the
ping messages, the master will then start sending messages to it again.
However, when a slave module configured with Do Not Ping fails and later becomes
"Healthy" the master cannot detect this change because it is not sending any ping
messages to it. To resolve this stiuation the slave module must be restarted using
either the slave or the master control register. This can be done by the application or
by using the AADvance Workbench in debug mode.