McCain ATC eX NEMA - Appendix D: Connectors’ Details, Front Panel

APPENDIX D: CONNECTORS’ DETAILS, FRONT PANEL.
Pin assignments for the ATC NEMA’s communication ports.
All ATC NEMA communication ports are accessible from the front panel.
An SDLC port is designated to synchronous communications to cabinet’s serial bus, it is a RS-485 serial
communication port with software selectable speed from 19.2Kbps to 614Kbps available over a DB-15 female
connector.
a) Pin assignment of the SDLC port (DB-15 position connector).
DLC Port, DB-15 pin out
PIN SIGNAL
1 TxD+
2 GND
3 TxCLKO+
4 GND
5 RxD+
6 GND
7 RxCLK+
8 GND
9 TxD
10 ENABLE/DISABLE
11 TxCLKO
12 CHASSIS GND
13 RxD
14 NC
15 RxCLK
The unit has three RS-232 asynchronous serial communication ports with software selectable speed from
1.2Kbps to 115.2Kbps, these ports are available over DB-9 male connectors. PORT 2 is used primarily for
connecting a terminal computer, or as a general purpose port. SP-5 and SP-8 are general purpose ports but
only SP-8 has modem control lines (RTS, CTS, DCD).
b) Pin assignment of the PORT 2 (DB-9 position connector).
Port 2, DB-9 pin out
PIN SIGNAL
1 NC
2 RxD
3 TxD
4 NC
5 GND
6 NC
7 NC
8 NC
9 NC