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Serial
input/output
table - J3
Input/Output
Pin
Number
Explanation
+5V Return/
Shield
J3-1
Common/shield - serial port interface.
Txd 232
J3-2
RS-232 transmitter output
(from 5345/5445).
Rxd 232
J3-3
RS-232 receiver input (to 5345/5445).
+5 V dc
J3-4
5 Vdc output
Note: The total 5 Vdc current from
pins J3-4, J6-8 and J7-7 must be less
than 450 mA.
+5 V Common
J3-5
Common - serial port interface.
Txd (+) 485
J3-6
RS-485 transmitter output
(from 5345/5445).
Txd (-) 485
J3-7
Rxd (+) 485
J3-8
RS-485 transmitter input (to 5345/5445)
Rxd (-) 485
J3-9
Rev F
5345/5445 Installation and Hardware Manual
2 - 19
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