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Wiring for Remote RS-232 and Alarm Communication
The Remote RS-232 and Alarm connector is for RS-232 control (such as updating firmware,
status queries, and various control functions) and the alarm feature. Wire the connector as
shown in figure 8 below.
Tx
Rx
G
RS-232 Device
Figure 8.
ATTENTION:
3/16 inch (5 mm).
•
Longer bare wires can short together.
•
Shorter wires are not as secure in the connectors and could be pulled out.
Cross the Tx and Rx lines once between the source and the target.
The alarm pins do not produce any discrete on or off or voltage signals. It is an internal relay
to connect or disconnect a custom alarm circuit.
NOTE: If power is lost or if link 2 optical light is disconnected, lost, or broken, alarm
pins 1 and 2 internally short.
REMOTE
RS-232
ALARM
Tx Rx G 1
2
1
2
Alarm Device
Wiring the Remote RS-232 and Alarm Connector
The length of exposed wires is critical. The ideal length is
FOX T UWP 302 Wallplate Transmitter • Installation and Operation
10
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