Interfaces; Com1 Port, Db9 Male (Rs232C) - Brainchild HMI 4.3 User Manual

All local electrical regulations should be strictly followed while connecting power
supply to HMI. Use proper rated cables, earth, grounding, shielding from reliable
sources, line protections in power supply circuit via fuses etc, to avoid shock,
injury/death to operating personal.
It is advised to use uninterrupted regulated power supply with adequate
protections and filters in power supply line to be used with HMI.
The plug-in terminal block for connecting the power supply is supplied along with
HMI and is designed for cables with a maximum cross-section of 1.5 mm

4.5 Interfaces

Tighten all the screws after inserting connector at COM1/COM2, otherwise,
communication failure with connected PLC/Inverter devices may occur because of loose
connections.

4.5.1 COM1 port, DB9 male (RS232C)

Fig: DB9 male
Pin Signal
number
1 DCD
2 RD
3 TD
4 DTR
5 SG
6 DSR
7 RTS
8 CTS
Signal Name
Data carrier detect
Receive data
Transmit data
Data terminal ready
Signal Ground
Data set ready
Request to send
Clear to send
24
2.
Signal
Direction
Output
Input
Output
Output
-
Input
Output
Input