Connecting Serial Controllers to DB-9
Important
: For non-linked enclosures, attach a 50 ohm termination connector
to the unused network BNC connector on the CPU (connector supplied); see
Figure 11.
To establish external serial control for RS-232 (null modem serial cable):
1. Use a null modem cable that matches the pin diagram in Figure 10 for
RS-232 without hardware flow control. AMX AutoPatch equipment requires
pins 2, 3, and 5 only. Plug one end of the null modem serial cable into Serial
Port 1 (DB-9) on the enclosure (see Figure 11). Plug the other end of the
cable into the serial port on the serial controller/device. Open the serial
communication software and set port settings to match the Epica default
settings (see chart below). (In addition to the default baud rate of 9600, Epica
enclosures support baud rates of 19200, 38400, and 57600). The settings on
the PC serial communication software and the enclosure
must
correspond to
each other. If a change is required to make them match, changing the PC’s
settings is preferable. If you decide to change the enclosure’s settings
instead, use X
N
Connect (see the Help file).
Epica-128 & Epica-256 Installation & Setup
4-3
Attaching & Setting Up External Serial Controllers
Ext
e
rnal
Cont
rol
Figure 11: Connect to serial port
Cable to serial control device
Serial port
50 ohm termination connector
Epica
Serial Port Settings
Baud
9600
Data Bits
8
Parity
None
Stop Bits
1
Flow Control
None
Figure 10: RS-232 null modem cable pin diagram, no hardware flow control
