Rs-232C Serial Communications Connection Diagram - TECO speecon 7200ma Instruction Manual

F. RS-232C Serial Communications Connection Diagram
The LCD Digital operator uses RS-232C serial communication through connector
CN1 to communicate with control board. Using the CN1 port on the control board,
parameters can be monitored and updated by a suitable PC programming tool.
The CN1 port is an un-isolated RS-232C with baud rate 2400 bps. Contact TECO
for further information.
•The pin definitions of CN1
－6 pin telephone jack
6 5 4 3 2 1
•Typical connection diagram
CN1
4
Tx
3
Rx
5
2
1
6
116
Pin Signal Definition
1 LCD/PC selection
2 5V
3 Rx
4 Tx
5 0V
6 Reserved (-5V, for LCD display)
PC
1
6
2
Rx
7
3
Tx
8
4
9
5
DB9
connector