Wiring Cmx-24 To Peripheral Devices - Equinox Systems MEGAPLEX Hardware Reference Manual

Wiring CMX-24 to Peripheral Devices

The CMX-24 cluster multiplexer provides standard RS-232 DTE
signals on 24, 10-pin, RJ-45 modular jacks, one for each device to be
connected. The pinouts for these jacks are shown in Figure 3-3.
Several items must be noted:
The jacks on the CMX-24 all face towards the center of the
product; thus the pinouts may seem to be opposite each
other. Refer to Figure 3-4 for the modular jack wiring
orientation.
Although the CMX-24 uses 10-pin modular jacks, the signal
pinouts have been arranged such that 4-, 6- or 8-wire
modular plugs may be used. Thus, as the receive and
transmit signals (and ground) are on the inner 4 wires, a 4-
wire connection may be made to data-only devices.
Either twisted-pair or flat modular cable may be used to
wire from the CMX-24 to a peripheral device.
18
Figure 3-3. CMX-24 RS-232 signals
MEGAPLEX Hardware Reference Manual