Mitsubishi Electric GT16 User Manual page 841

RS422 connection diagram 3)
RS-232/RS-422
* 1
interface converter Link unit side
RD(+) S+
RD(-) S-
TD(+) R+
TD(-) R-
0V 0V
FG FG
* 2
*1 Terminating resistors should not be provided for a PLC and an RS-
232/RS-422 interface converter which will be terminals.
*2 Connect FG grounding to the appropriate part of a cable shield line.
RS422 connection diagram 4)
Link unit
* 1
side
S+
S-
R+
R-
0V
FG
* 2
*1 Terminating resistors should not be provided for a PLC and an RS-
232/RS-422 interface converter which will be terminals.
*2 Connect FG grounding to the appropriate part of a cable shield line.
RS422 connection diagram 5)
RS-232/RS-422
* 1
interface converter PLC side
RD(+) L1S+
RD(-) L1S-
TD(+) L1R+
TD(-) L1R-
0V 0V
FG FG
* 2
*1 Terminating resistors should not be provided for a PLC and an RS-
232/RS-422 interface converter which will be terminals.
*2 Connect FG grounding to the appropriate part of a cable shield line.
RS422 connection diagram 6)
* 1
PLC side
L1S+
L1S-
L1R+
L1R-
0V
FG
* 2
*1 Terminating resistors should not be provided for a PLC and an RS-
232/RS-422 interface converter which will be terminals.
*2 Connect FG grounding to the appropriate part of a cable shield line.
* 1 * 1
Link unit side
S+
S-
R+
R-
0V
FG
* 2
Link unit Link unit
* 1 * 1
side side
S+ S+
S- S-
R+ R+
R- R-
0V 0V
FG FG
* 2
* 1 * 1
PLC side
L1S+
L1S-
L1R+
L1R-
0V
FG
* 2
* 1 * 1
PLC side PLC side
L1S+ L1S+
L1S- L1S-
L1R+ L1R+
L1R- L1R-
0V 0V
FG FG
* 2
RS422 connection diagram 7)
Connector conversion
* 2
box side
RDA
2
RDB
7
SDA
1
SDB
6
SG
5
RSA
3
* 3
CSA
4
RSB
8
CSB
9
FG
-
*1 Terminating resistors should not be provided for a PLC and an RS-
232/RS-422 interface converter which will be terminals.
*2 Set the terminating resistor setting switch of the GOT main unit to
"Disable".
*3 Connect FG grounding to the appropriate part of a cable shield line.

Precautions when preparing a cable
(1) Cable length
(a) The length of the RS-422 cable used for
connecting the connected equipment to the
communication converter
The length of the RS-422 cable must be 500m or
less.
(b) The length of the RS-422 cable used for
connecting the connected equipment to the GOT.
The total distance (between GOT and controllers)
of RS-422 cable must be 13m or less.
(2) Connector conversion box side connector
For the Connector conversion box side connector, refer
to the following.
6.7 Connector Conversion Box
(3) JTEKT PLC side connector
Use the connector compatible with the JTEKT PLC side
module.
For details, refer to the JTEKT PLC user's manual.

Connecting terminating resistors
(1) GOT side
When connecting a JTEKT PLC to the GOT, a
terminating resistor must be connected to the GOT.
Set the terminating resistor setting switch of the GOT
main unit to "Disable".
For the procedure to set the terminating resistor, refer
to the following.
4.2 Back Panel
37. CONNECTION TO JTEKT PLC
37.3 Connection Diagram
PLC Link unit
* 1 * 1
side side
L1S+ S+
L1S- S-
L1R+ R+
L1R- R-
0V 0V
FG FG
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