COMMELL MP-954 User Manual

Page 5

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MP-954 User’ s Manual

4

Connector: CN_COM1/2
Type: 20-pin (10x2 pitch=1.27x2.54mm) header

Pin

Description

Pin

Description

1 DCD1- 2 RX1-

3 TX1- 4 DTR1-

5 GND 6 DSR1-

7 RTS1- 8 CTS1-

9 RI1 10 NC

11 DCD2-/

422TX-/485-

12 RX2-/

422TX+/485+

13 TX2-/422RX+

14 DTR2-/422RX-

15 GND 16 DSR2-

17 RTS2- 18 CTS2-

19 RI2 20 NC

Connector: CN_COM3/4

Type: 20-pin (10x2 pitch=1.27x2.54mm) header

Pin

Description

Pin

Description

1 DCD3- 2 RX3-

3 TX3- 4 DTR3-

5 GND 6 DSR3-

7 RTS3- 8 CTS3-

9 RI3 10 NC

11 DCD4- 12 RX4-

13 TX4- 14 DTR4-

15 GND 16 DSR4-

17 RTS4- 18 CTS4-

19 RI4 20 NC