Mitsubishi Electric GOT2000 Series Connection Manual page 426

13.3.3 RS-485 cable
The following diagram shows the connection between the GOT and the PLC.
■1. RS-485 connection diagram 1)
CON side (20 pin)
SDA1(TXD1+)
6
SDB1(TXD1-)
8
RDA1(RXD1+)
10
R
RDB1(RXD1-)
12
*1
SG
2
NC
1
NC
3
NC
4
SDA2(TXD2+)
5
SDB2(TXD2-)
7
RDA2(RXD2+)
9
RDB2(RXD2-)
11
NC
13
RSA(RTS+)
14
NC
15
RSB(RTS-)
16
NC
17
CSA(CTS+)
18
NC
19
CSB(CTS-)
20
*1
*2
■2. RS-485 connection diagram 2)
*1
GOT side (D-sub 9 pin)
SDA
1
SDB
6
RDA
2
RDB
7
SG
5
RSA
3
RSB
8
CSA
4
CSB
9
*1
*2
13 - 8
13.3 Connection Diagram
*1
A terminating resistor is required.
Set the terminating resistor selector switch in the main unit to "Disable", and connect a terminating resistor (110 Ω).
➠
1.4.3 Terminating resistors of GOT
For terminating resistors in PLCs manufactured by MITSUBISHI ELECTRIC INDIA, refer to the manual of PLCs manufactured by
MITSUBISHI ELECTRIC INDIA.
When placing the GOT to the terminal in the system configuration, set the terminating resistor of the GT27, GT25(Except
GT2505-V) to "Enable" (Set to "110 Ω" for GT2505-V, GT21).
When placing the GOT to the position other than the terminal, set the terminating resistor of the GT27, GT25(Except GT2505-V)
to "Disable" (Set to "OPEN" for GT2505-V, GT21).
➠
1.4.3 Terminating resistors of GOT
For terminating resistors in PLCs manufactured by MITSUBISHI ELECTRIC INDIA, refer to the manual of PLCs manufactured by
MITSUBISHI ELECTRIC INDIA.
MITSUBISHI ELECTRIC INDIA
*2
PLC side
Tx +
4
Tx –
7
Rx +
9
Rx –
8
GND
5
MITSUBISHI ELECTRIC INDIA
*2
PLC side
Tx +
4
Tx –
7
Rx +
9
Rx –
8
GND
5
MITSUBISHI ELECTRIC INDIA
*2
PLC side
Tx +
4
Tx –
7
Rx +
9
Rx –
8
GND
MITSUBISHI ELECTRIC INDIA
*2
PLC side
Tx +
4
Tx –
7
Rx +
9
Rx –
8
GND
5