Contemporary Control Systems Compact Managed Switches Software Manual for Console Access - Manual (Page 34)

TD020850-0MG
34
4.3.8.1 Configure Relay Features
Figure 28 displays the following four features :
Port Monitoring (link monitoring of specific ports) can be either enabled or disabled.
Relay State determines the behaviour of the relay. By selecting “Make on Fault”, it will
close its contacts once a fault is detected. “Break on Fault” will cause the relay to normally
keep its contacts closed and open them upon detection of a fault. . A fault is active when
the condition of a monitored link or port matches its monitored state (see 4.2.1.8.2).
Relay Activation After Power specifies a port-monitoring delay which allows the switch to
stabilize for 1 to 999 seconds after power-up. This is provided because, after power-up
several seconds may be required for the switch to complete auto-negotiation of the data
rate and duplex mode for each port. If the relay were not inhibited during this time, it could
repeatedly activate without a true fault existing.
Relay Reset Method is automatic by default, but can be set to manual. Selecting “Manual”
will cause a new menu item to appear that will need to be chosen to reset the relay.
Figure 28 — Configure Relay Features