Specifications

4.4

Connecting Data

Devices

The DXP has two serial data ports on its CPU board that

accommodate data devices such as

VDTs,

PCs, printers and modems.

You can also add serial data ports with the communications card

(DXPCOM).

If the cable from the data device you want to use is not already

equipped with an

RS232-type

jack, refer to the data device

manufacturer’s manual. Also see,

IMI66-085,

for the proper wiring

connections. When connecting a data device, be sure to consider the

following information:

The DXP and the data device each have a transmit data lead, a

receive data lead and a signal ground. For a VDT, connect the

DXP’s receive data lead to the

VDT’s

transmit data lead and

connect the DXP’s transmit data lead to the

VDT’s

receive

data lead and connect the DXP’s signal ground or SG lead to

the device’s SG lead.

If “handshaking” is necessary between the DXP and the data

device, connect the DXP CTS (clear to send) lead to the

appropriate lead of the data device. For more information

about these connections, consult IMI 66-085.

Data devices connected to the DXP should be configured to

operate compatibly with the DXP’s default setting of eight-bit

data with one stop bit and no parity at a baud rate of 9600

baud, for port one. Port two defaults to seven-bit data, two stop

bit, no parity and 300 baud.

Remember that the maximum distance between the DXP cabinet and

the data device should not exceed 500 feet unless short-haul modems

are used.

4 Programming The DXP