Excell Precision FM - Manual (Page 25)

EXCELL PRECISION CO., LTD .
FM User Manual SME300000119 24
Transmission Interface
7-1 OP-01 RS232/RS485 Serial Output (with RTC)
To short 1 and 2 pins is RS485 output.
To short 2 and 3 pins is RS232 output.
2 Pin Allocation of Rear Panel
Pin Function
2 RXD
3 TXD
5 SG
6 DA
7 DB
4
RS485 interface is capable to connect up to 10 mini-indicators.
1 2 3 4 5
7 6 8 9
CN3 CN2
1 2 3 1 2 3