Interface - Mitsubishi Electric MELSEC iQ-R Series User Manual

4.2
RS-232 Interface
This section shows the specification of an RS-232 interface and its wiring.
RS-232 connector
The RS-232 interface specifications to connect to a target device are shown below.
Connector shape Pin No.
1
2
1
6
3
2
7
3
4
8
4
9
5
5
6
7
8
9
Use the following product as a connection cable connector.
Connector type
D-sub connector (Solder-connection type)
The specifications of fixing screws are as follows:
• Connector mating screw: #4-40UNC
• Tightening torque range : 0.15 to 0.20 N⋅m
Precautions
■Considerations for wiring RS-232 cable
The following shows the considerations for wiring RS-232 cable.
• Make sure that RS-232 connection cable shield is single-point grounded.
• Do not short-circuit the FG and SG signals of the RS-232 connection cable. When the FG and SG signals are connected
inside of the peripheral device, do not connect the FG signal to a C Controller module.
• For connection method of peripheral device, check the specifications of the peripheral device.
■Considerations when connecting a target device
The following shows the considerations when connecting a target device.
• A reception error may occur on the target device connected to a C Controller module when the power for the C Controller
module or the target device is turned ON or OFF.
• A reception error occurs on the target device when the system on the target device side is booting while a C Controller
module is transmitting data to the target device.
• When an error occurred on the target device, take corrective actions in accordance with the manual for the target device.
Signal Signal name
code
CD(DCD) Data carrier detect
RD(RXD) Received data
SD(TXD) Transmitted data
ER(DTR) Data terminal ready
SG Signal ground
DR(DSR) Data set ready
RS(RTS) Request to send
CS(CTS) Clear to send
CI(RI) Ring indicator
Manufacturer name
DDK Ltd.
Signal direction (R12CCPU-V ⇔ RS-232 device)
Model name
17JE-13090-02(D8C)(-CG)
4.2 RS-232 Interface
4
4 WIRING
25