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CDI-S100 Installation Guide v1.0 5

Baud Rate

Jumpers J1 to J3 set the serial port’s baud rate.

The default setting is 9600 baud. Check the

baud rate of the controlling equipment. If a

different baud rate is required, set the jumpers

according to the diagram below:





DEFAULT

SETTING

9600 baud

J1 J2 J3 J1 J2 J3

J1 J2 J3 J1 J2 J3

J1 J2 J3

4800 baud

1200 baud2400 baud

300 baud

Handshaking

RS-232C serial communication between

equipment sometimes requires ow

control (or “handshaking”), to conrm that

transmitter (the controller) and receiver

(the CDI-S100 in this case) are correctly

synchronised. PCB jumpers J4 and J5 control

handshaking.

Handshaking may be via “hardware”,

“software”, or off. Hardware handshaking

is also referred to as “RTS/CTS”, and needs

additional pins of the 9-pin serial connector

to be wired (see “Pinout” on page 7).

Software handshaking is also referred to as

“Xon/Xoff”.

The default setting is off (no handshaking).

If the controlling equipment requires

handshaking, set the jumpers according to the

following illustration:

 



 



 







Mechanical tting and internal

connection

If retrotting the CDI-S100 to an existing

CX462 installation, turn the CX462 off,

remove its IEC mains lead and all its other rear

panel connections (marking as necessary to

assist re-connection). If the CX462 is mounted

in a rack, remove it.

If tting the CDI-S100 to a new CX462,

unpack the CX462.

In either case, place the CX462 on a at

surface, with the rear of the unit facing you.

1. Undo the six screws securing the top

panel of the CX462; remove the panel.

Retain the screws.

2. Remove the plastic blanking plate which

covers the serial interface module

connector hole in the rear panel. This is

held in place with adhesive and can be

prised off.

3. Identify the empty 16-pin header labelled

CON7 on the main PCB just behind the

empty serial connector hole. Note there

is an M3 screw immediately behind this

connector, and another about 40 mm to

the right. Both these screws are clearly

marked with arrows; remove and retain

them.

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