User manual

15
10/100Base-TX ports
There are two eagle-eye LED’s on each 10/100 port. The
top LED will illuminate green if the link speed is 100Mbps,
and the lower LED will illuminate green if there is link
activity. Otherwise, the LED’s will be off.
External Alarm Contact
The INS-802 Industrial Switch has one Alarm Contact
connection point located on the green Power Contact
Block on the top panel. For detailed instructions on how
to connect the Alarm Contact power wires to the two ALM
contacts of the 6-contact terminal block connector, see
the Procedure for Connecting DC Power in the section
above (it is the same procedure).
You can connect the Alarm circuit to any warning device
which the user’s factory or industry already has installed
in the control room or factory floor. When a fault occurs,
the Switch will send a signal through the Alarm contact,
to activate this external alarm. The Alarm Contact has
two terminals that form a Fault circuit for connecting to an
alarm system.
An alarm will be signaled in the following situations:
1. Ports 1~8: link failure (e.g.: cable disconnected,
device breakdown, etc.)