B&B Electronics TPC-1261H user manual RS-232 RS-422 RS-485

PIN	RS-232	RS-422	RS-485
1	NDCD	TX-	D-
2	NRX	TX+	D+
3	NTX	RX+
4	NDTR	RX-
5	GND	GND	GND
6	NDSR
7	NRTS
8	NCTS
9	NRI

TPC-1261H User Manual 46