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AmITX-BT-I
RS-422 (COM3-4 only)
Pin # Signal
Pin # Signal
1 Tx-
2 Tx+
3 Rx+
4 Rx-
5 —
6 —
7 —
8 —
9
GND
10
5V / 12V
RS-485 (COM3-4 only)
Pin # Signal
Pin # Signal
1 Tx/Rx-
2 Tx/Rx+
3 —
4 —
5 —
6 —
7 —
8 —
9
GND
10
5V / 12V
SW10/SW11 (RS-422/485 Mode Select)
RS-232 (default)
RS-422
RS-485
1 ON* ON OFF
2 OFF* ON ON
See Section 4.3.8 Serial Port Mode Switch Setting (SW14, SW10, SW11)
COM Cable (optional):
COM Port Cable (length 250mm), P/N: 30-20876-0000