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5-5
5
 
Effect of PLC Modes and Actions on EGD Operations
The table below indicates what happens to the configuration and operation of EGD when in
different PLC modes and when certain PLC actions take place.
For example, the normal PLC mode for EGD operation is RUN with Outputs enabled.  In this
PLC mode, EGD remains configured and exchanges are both produced and consumed.  If the
PLC mode is set to STOP with I/O disabled, the Producer ID remains configured, but  production
and consumption stop.
When configuration is lost, the EGD configuration must be stored again.
Configuration-Based Exchanges
continue to be…
PLC Mode or Action
Producer ID remains
configured if…
Configured
Produced
Consumed
PLC Mode
RUN-Outputs Enabled
YES
YES
YES
YES
RUN-Outputs Disabled
YES
YES
NO
YES
RUN-SUSPEND I/O 
1
YES
YES
NO
NO
STOP-I/O Enabled
YES
YES
YES
YES
STOP-I/O Disabled
YES
YES
NO
NO
PLC Action
RUN-Store Logic
YES
YES
NO
3
NO
3
STOP-Store Logic
YES
YES
NO
3
NO
3
STOP-Clear Logic
YES
YES
NO
3
NO
3
STOP-Config Store
Replaced
2
Replaced
2
NO
3
NO
3
STOP-Clear Config
NO
NO
NO
NO
PLC Power Cycle
YES
YES
NO
3
NO
3
Ethernet Interface
Restart
YES
YES
NO
3
NO
3
1
 RUN-SUSPEND I/O refers to the SUSIO logic function.
2
 Producer ID and exchange definitions are replaced.
3
 Producer ID and exchanges continue to be configured or not depending on the PLC mode
prior to the action.
Note
The DOIO logic function does not affect EGD production or consumption.
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