Mitsubishi Electric GOT2000 Series Connection Manual page 429

(3) RS-422 connection diagram 3)
GOT side
SDA
1
SDB1
6
RDA
2
RDB
7
SG
5
RSA
3
CSA
4
RSB
8
CSB
9
*1 Connect FG grounding to the appropriate part of a cable shield line.
*2 Terminating resistor should be provided for a PLC which will be a terminal.
■2. Precautions when preparing a cable
(1) Cable length
The length of the RS-422 cable must be 1200m or less.
(2) GOT side connector
For the GOT side connector, refer to the following.
➠ 1.4.1 GOT connector specifications
(3) GE PLC side connector
Use the connector compatible with the GE PLC side module.
For details, refer to the GE PLC user's manual.
■3. Connecting terminating resistors
(1) GOT side
1) For GT27, GT25(Except GT2505-V) ,GT23
Set the terminating resistor setting switch of the GOT main unit to "Disable".
2) For GT2505-V
Set the terminating resistor selector to "330Ω".
For the procedure to set the terminating resistor, refer to the following.
➠
1.4.3 Terminating resistors of GOT
(2) GE PLC side
When connecting a GE PLC to the GOT, a terminating resistor must be connected.
➠
GE PLC user's Manual
PLC
RT
9
RD(B')
11
RD(A')
10
SD(B)
13
SD(A)
12
SG
7
RTS(A)
6
CTS(A')
15
RTS(B)
14
CTS(B')
8
SHLD
* 1
1
* 2
terminating resistor 120Ω PLC
* 1
11.3 Connection Diagram
RT
9
RD(B')
11
RD(A')
10
SD(B)
13
SD(A)
12
SG
7
RTS(A)
6
CTS(A')
15
RTS(B)
14
CTS(B')
8
SHLD
1
11
11 - 11