Moxa UPort 1150I [42/43] Pin assignment

3. Pin Assignment

UPort DB9 Pin Assignments

The UPort 1100 series uses male DB9 connectors. Pin assignments are shown in the following diagram:

DB9 (male) Pin RS-232

RS-422 4-wire

RS-485

2-wire RS-485

1 DCD (in) TxD-(A) –

2 RxD (in) TxD+(B) –

3 TxD (out) RxD+(B) Data+(B)

4 DTR (out) RxD-(A) Data-(A)

GND

6 DSR (in) – –

7 RTS (out) – –

8 CTS (in) – –

Terminal Block Pin Assignments

The UPort 1130/1130I/1150/1150I comes with a DB9 to terminal block converter, with pin assignments as

shown below:

Terminal Block Pin

RS-422 4-wire

RS-485

2-wire RS-485

1 TxD+(B) –

2 TxD-(A) –

3 RxD+(B) Data+(B)

4 RxD-(A) Data-(A)

5 GND GND

Note that the converter maps pin 1 on the DB9 connector to pin 2 on the terminal block and pin 2 on the DB9

connector to pin 1 on the terminal block.