FLEX Ex 24V dc Non-Isolated Source 4 Output Module
17
Publication
1797-5.6 - December 2003
Adapter Operation
Network Communication Monitoring
The adapter is the primary monitor of network activity. If it detects loss of
network communication, it can be programmed to:
•
continue writing the last valid received data to the module (hold last
state)
•
apply local module safe states
1
•
write a programmable fault state value to the module, depending upon
the module type
2
This mechanism primarily targets fault behavior for loss of network
communication.
Program Mode Behavior
The adapter also monitors the state of the controlling processor or scanner.
Two states can be detected: run mode and program mode (idle).
When program mode is detected, the adapter can be configured to:
•
continue writing the last valid received data to the module (hold last
state)
•
apply local module safe states to zero
1
•
write a programmable fault state value to the module, depending upon
the module type
2
1
This selection is shown as “Reset Outputs” in RSNetWorx but its action in “Apply Local Module Safe
States”.
2
This option is only available in some adapters.
AB Parts