Mitsubishi RS232/485/LAN Serial Communication Control Manuale Pagina 95

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3 Omron
2-95
Chap.2
Connection Diagram 3-2: RS-422 Link unit to MICRO/I
PLC(RS-485/422) HG1F/2F/2S/3F/4F(RS-485/422)
Pin No.
Pin No.
Name
Name
HG1F
Connector
HG1F
Terminal
HG2F/
3F/4F
HG2S
7 FG FG Cover - 1 1
9 SDA(SD-) TERM - - 9 -
5 SDB(SD+) RDA(RD+) 2 3 10 32
6 RDA(RD-) RDB(RD-) 7 4 16 33
1 RDB(RD+) SDA(SD+) 1 1 11 30
3 SG SDB(SD-) 6 2 15 31
2 CS- 9 - 18 37
4 RS- 8 - 19 35
8 CS+ 4 - 21 36
RS+ 3 - 22 34
SG 5 5 7 29
Internal
termination
resistor
330-Ohm
D-sub, 9P connector socket type (HG1F)
D-sub, 25P connector socket type (HG2F/3F/4F)
D-sub, 37P connector plug type (HG2S)
D-sub, 9P connector socket type
Shield Wire
- We recommend that you switch on the termination resistor on the PLC Link Unit side for
long-distance transmission.
- 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.
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