3 Wiring
 
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3. Wiring
3.1 Terminal Description
(7)
(1) (2) (3) (4) (5) (6)
Rear view
Terminal Function description
Terminal 
No.
Terminal Name
Terminal Function 
Description 
Remarks
(1) Power supply terminal
24 VDC power 
supply terminal of 
the HMI
An extra power supply 
terminal connector is 
delivered along with the 
HMI.
(2) DB9 female
Communication 
port between the 
HMI and the PLC
Two serial communication 
ports, COM1 and COM3. 
are available in the HMI. 
COM1: RS485/422
COM3: RS485
(3) DB9 male
Communication 
port between the 
HMI and the PLC
Only IT6***E HMIs support 
this  COM2 RS232 port.
(4) USB (Type B)
USB client, for external devices such as PC for 
downloading or user program commissioning
(5) USB (Type A)
USB host, for devices such as USB drive, USB 
mouse and printer