Acnodes FPC-8057 User Manual

Page 24

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FPC-8057 User’s Manual

2.3.2 COM2 [RS-232] & COM3 [RS-422/485]

The 9 Pin, male, SUB-D, COM2 [RS-232] & COM3 [RS-422/485] Port
on the back of the unit is the downloading port (PC Connector) and RS-
485/422 communications port for connecting to a device.

Connector COM2 [RS-232] & COM3 [RS-2422/485]
Pin Designations

COM2

COM3

Pin# Symbol

(RS-232)

(RS-422)

(RS-485)

1 GND

GND GND

GND

2 Tx+

RS-422 Transmit

3 Tx-

RS-422 Transmit

4 Rx+

RS-422 Receive

Data+

5 Rx-

RS-422 Receive

Data

6 GND

7 RxD

Receive

8 TxD

Transmit

9 Not

used

Installation Instructions