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DR4018 DIGISWITCH (v1.2)

Modify the decoder's settings

There are two ways of changing the decoder's settings and/or switching time, or chosing one of the many presets

in CV47. They are described below.

(1) CV Programming / reading through the programming track

This common way of programming can become rather complicated.

The decoder must first be prepared by placing a 150—270 Ohm resistor on output 1 as shown in the diagram.

The resistor ensures that there is a resistance on the programming track, which your con-

unit requires as confirmation that a module is present and that the programming com-

mands have been received from the control unit.

Unfortunately, no two control units are the same and it is possible that the attached resis-

does not provide enough, or provides too much, resistance. If this happens,

consult your control unit's manual to find out what resistance is required. In most cases

using a bulb (12 Volt—60 mA) works well.

Step 1 :

Connect both the power and signal inputs on the decoder to the rails output on your control unit.

Step 2 :

Press the program button on the module until the red LED stays on.

Step 3 :

Now connect both the power and signal input on the decoder to the program output on your control

unit.

Step 4 :

You can now modify the CVs using CV byte or CV bit programming.

(For information about CV byte or CV bit programming, please consult your control unit's manual)

Step 5 :

Connect both the power and signal inputs on the decoder to the rails output on your control unit.

Step 6 :

Press the program button on the module until the LED goes out.

Step 7 :

Your modifications have been saved and the module is ready for use.

(2) CV Programming via the main track (POM)

An alternative way of programming is POM (Program On Main). This method of programming allows you to con-

nect the module directly to the track without the difficulty of attaching a resistor, as is required when program-

ming via a separate programming track.

Step 1 :

Attach the signal input on the decoder to the rails output on your control unit.

Step 2 :

Ensure the module is receiving power via the module's power input.

(You can also connect the power and signal inputs to each other)

Step 3 :

Set your control unit to POM programming mode.

(You can find more information about the POM mode in your control unit's manual)

Step 5 :

Choose local address 9999 on your control unit.

Step 6 :

Press the button on the module until the LED goes on.

Step 7 :

Now program the desired CVs for the module.

Step 8 :

Press the button on the module until the LED goes out.

Step 9 :

The module is ready for immediate use with the modified settings.

BE CAREFUL! In some cases the DR4018 must be given a new address by following the steps in the 'Give the mo-

dule an address' section on page 3 of this manual.

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