FOE fiber connections
There is one pair of SC type fiber terminals on each FOE.
l RX (Receive) and TX (Transmit)
When not used, these SC terminals should be protected by plastic caps.
To make the fiber optic link, connect the TX of one FOE to the RX of the other FOE and vice versa.
This can be done by aligning the notch on the fiber optic connector in the cable with the SC
connector on the FOE module and pushing it in gently to lock.
The function of TX, RX pair is identical on both the FOE modules and either module can be used
interchangeably. Ensure to insert the correct cable into the TX or RX connector.
13.5.8 Power connection details for the single mode FOE on IOTA
The FOE receives its input power from the IOTA through the terminal block. Two separate terminal
blocks are provided on the IOTA for powering the two FOE modules.
FOE mounting option Honeywell part number
(power cable)
IOTA 51202930-100
The following table provides information on connecting the FOE Power terminal block and the IOTA
screw terminal connector TB1/TB2.
Wire color TB1 pin TB2 pin FOE pin Description
Red 1 2 V+ +24V
Black 2 3 V- COM
Yellow 3 1 Chassis / Safety Ground
The following figure displays the top view of the FOE module. It contains the DB-9 connector for
RS232 communication, a 3-pin terminal block for input power and a screw for safety ground
connection.
