Communications 9
Host/Printer Port 1 (RS-232-C or RS-422)
This port, labeled “SES1-EIA,” is designed for connection to the host (computer or modem) or a serial printer via a 25-pin D-shell (DB25P) female connector. This port uses an RS-232-C communication interface, is configured as a DTE (Data Terminal Equipment) device, and can operate from 110 to 134,400 baud. The pins supported are shown below:
RS-232-C Host/Printer Port 1 Pin Assignments
This port also uses (if installed) an optional RS -422 communication interface and can also operate from 110 to 134,400 baud. The pins supported are shown below:
| | | | | | | | | | |
13 12 11 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
25 24 23 | 22 21 20 19 18 17 | | 16 15 14 | |
| L(out)+ | | | | | | | | L(in)+ |
L(out) - | | | | | | | L(in) - |
RS-422 Host/Printer Port 1 Pin Assignments
