‑21‑
Cable connector
and pin
DB9 (female) 8‑pin DIN round connector
Signal level RS422 RS422
—
Pin No. Signal Pin No. Signal
Cable connection
7 RX‑ 4 TX‑
8 RX+ 7 TX+
9 TX‑ 1 RX‑
4 TX+ 2 RX+
5 GND 3 GND
Compatible HMI
and port
IT7070/IT7100 HMI COM1
[RS422]
Note: This cable is not
suitable for IT7150E.
Inovance H1U/H2U/H3U RS422
communication port
Mitsubishi FX1N/2N/3U/3G RS422
communication port
HMI user program
setting for use of
the cable
In the HMI user project, set the COM1 port as "RS422/RS485";
The HMI and PLC must have the same communication protocol and
data format settings.
2. Cable Type 2 Model: H2U‑232‑CAB; Ordering No.: 15042148