SID-21W9
12 SID-21W9 Quick Reference Guide
2.1 SID-21W9 connector mapping
2.1.1
Serial port connector (COM)
*Default
RS-485*
Signal
PIN PIN
Signal
485_Tx-
1
6
NC
2
7
NC
NC
3
8
NC
NC
4
9
NC
GND
5
RS-232
Signal
PIN PIN
Signal
NC
1
6
NC
RXD
2
7
NC
TXD
3
8
NC
NC
4
9
NC
GND
5