Hardware manual

2 Mitsubishi

2-61

Chap.2

Connection Diagram 2-9: Computer Link Unit (RS-485) to MICRO/I

PLC(RS-485/422) HG1F/2F/2S/3F/4F(RS-485/422)

Pin No.

Name

HG1F

Connector

HG1F

Terminal

HG2F/

3F/4F

HG2S

1 FG FG Cover - 1 1

2 RDA TERM - - 9 -

3 SDA RDA(RD+) 2 3 10 32

4 DSRA RDB(RD-) 7 4 16 33

5 DTRA SDA(SD+) 1 1 11 30

7 SG SDB(SD-) 6 2 15 31

8 SG CS- 9 - 18 37

15 RDB RS- 8 - 19 35

16 SDB CS+ 4 - 21 36

17 DSRB RS+ 3 - 22 34

18 DTRB SG 5 5 7 29

D-sub, 9P connector socket type/Terminal block (HG1F)

D-sub, 25P connector socket type (HG2F/3F/4F)

D-sub, 37P connector plug type (HG2S)

D-sub, 25P connector socket type

Internal

termination

resistor

330-Ohm

Shield Wire

- There is no pin No. corresponding to TERM on the HG1F/HG2S. When inserting a

termination resistor, use a communication switch. For the setting of the switch, refer to "3

Important Points Regarding Wiring" in Chapter 1.

When you use the Terminal Block type of HG1F, make sure to configure the Hardware Flow

control to NONE because the HG1F doesn’t have control lines.