C.1 Installing Serial Controllers
Your enclosure may come with one, two, or zero DB-9 ports,
depending on what you ordered from the factory. You can
attach an external controller to either DB-9 port 1 or DB-9
port 2.
To connect an external controller to the
half-Y
distribution matrix:
Connect an RS-232 or RS-422 serial cable between the
external controller and either DB-9 port.
The Transmit, Receive, and Ground pins must be run from
the external controller to the
half-Y
. Since the distribution
matrix does not provide handshaking, use a null modem cable
as shown in figures C.1 through C.4.
Note:
Serial communication protocol is set at the factory
when your matrix is ordered. Use serial cable that
corresponds to the factory set communication protocol.
If uncertain about the communication protocol,
contact an authorized AutoPatch dealer.
C-2
Appendix C
figure C.1 232 communications for a 25-pin connector
IBM PC: DB-25
AutoPatch: DB-9
IBM PC: DB-25
AutoPatch: DB-
9
TD #2........................................ RD #2
RD #3....................................... TD#3
SG #7....................................... SG #5
DSR #6... DTR #20
figure C.2 232 communications for a 9-pin connector
IBM PC: DB-9
AutoPatch: DB-9
IBM PC: DB-9
AutoPatch: DB-9
RD #2..................................... TD #3
TD #3..................................... RD #2
SG #5..................................... SG #5
DSR #6... DTR #4
RTS #7... CTS #8
