Connecting The Serial Data Ports - Comdial DXP Plus Manual

GCA40–130

4.5 Connecting The Serial Data Ports

The CPU board provides two serial data ports dedicated for PC-based programming and the
remote-maintenance modem. You can add as many as 16 additional non-dedicated serial data ports by
adding the communications card onto either the services board, the auxiliary board, or either of the two
interface boards. Each of these boards will accept up to two communications cards onto its lower two
slots. The following chart shows the locations for all of the non-dedicated serial data ports (Figure 18
shows the pin-outs for serial data ports).
Serial Data Port Designation
Serial Data Ports 3–10
Serial Data Ports 11–18
In order to use all 16 non-dedicated serial data ports you must install four communications cards.
NOTES:
1. Maximum distance between
each ofthe two dedicated
serial data ports and its
external data equipment
is 25 feet.
2. Some data devices require
CTS signal for proper
operation. Route to device
as needed.
34 – Connecting The System
Lower two slots on the services board
Lower two slots of one of the following:
—The interface board in the upper expansion cabinet,
—The interface board in the lower expansion cabinet,
—The auxiliary board in the main cabinet.
Serial Modem Port
Maintenance Port
(Front View of Jacks)
Figure 18: Serial Data Port Connections
DXP Plus General Description
DXOPT–COM Location
PLUS044
1
2
Modular Jacks
3
4 Pin 1 = Request To Send
5
6 Pin 2 = Clear To Send
Pin 3 = Receive Data
Pin 4 = Transmit Data
1
2
Pin 5 = Signal Ground
3
4
Pin 6 = Frame Ground
5
6