TS-8390-49xx COM2 Header

From Technologic Systems Manuals

The COM2 header is a 2x5 0.1" pitch header with RS232 and RS485. These follow a different pin layout which corresponds with a standard 10 pin header standard for UARTs. The RC-DB9 is available to convert these ports to a DB9.

Pin Description
1 ttyMAX1 RS485+
2 ttymxc4 RS232 RX
3 ttymxc4 RS232 TX
4 Not supported on the TS-4900
5 Ground
6 ttyMAX1 RS485-
7 ttyMAX2 RS232 TXD
8 ttyMAX2 RS232 RXD
9 Not supported on the TS-4900
10 Not connected