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INSTRUCTION MANUAL

INSTRUCTION MANUAL

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Page 58<br />

Decoder MX620 - MX622, MX630 - MX632 Sound Decoder MX640 - MX648<br />

8 ZIMO decoders and competitor systems<br />

All Zimo decoders comply with NMRA standards and recommended practices and can be used on<br />

layouts with other brands of NMRA compliant systems.<br />

What most systems of other manufacturers have in common, in contrast to ZIMO systems, is that<br />

track power is not stabilized or only partly stabilized and often relatively weak (in regards to voltage<br />

but amperage as well). This can lead to uneven speeds and/or limited top speed because Zimo decoders<br />

are of course programmed by default to operate on stabilized and regulated track power from<br />

a Zimo command station of up to 24V.<br />

It is recommended in such cases to:<br />

- change CV #57 (reference voltage) from ”0” (automatic regulation based on given track voltage) to<br />

a fixed voltage. For example: “140” for a DCC system with a typical track voltage of 16 - 18V. In this<br />

case 14V will be used as reference, which leaves a certain safety margin during voltage drops.<br />

Does not apply to MX62 decoders, where a fixed value is always used.<br />

digit=1) causes the decoder to add 100 to the CV value that will be entered in the next programming<br />

step. Therefore, a value of 60 entered to CV #5 with the Lokmouse2 is stored as 160!<br />

Example:<br />

To program CV #122 (exponential deceleration), for example, with a value of 25 do the following:<br />

Again, go to CV #7 and enter a value of 10, then go to CV #22 and enter a value of 25.<br />

Explanation: CV #7 = 10. The 1 in the tens digit causes the decoder to add 100 to the CV address<br />

in the following programming step. As a result, CV #122 will be programmed instead of CV #22!<br />

ZIMO decoder with DIGITRAX Chief<br />

No problems expected with this system!<br />

The Digitrax system usually operates at 28 or 128 speed steps. If for some reason the headlights don’t<br />

work, confirm that indeed the system and the decoder are set to the same number of speed steps and if<br />

necessary, change the speed steps at your cab to 28 or 128 steps.<br />

ZIMO decoder with Lenz “DIGITAL plus” from software version 2.0<br />

This system uses 28 speed steps beginning with version 2.0 and 128 steps with version 3.0 and up.<br />

It also programs in direct mode according to NMRA DCC standards and is therefore fully compatible<br />

with Zimo decoders.<br />

All Zimo decoders are set to 28 speed steps by default. Make sure the system is also set to 28 steps<br />

for the decoder address in question. Incompatibility will be the result if the speed steps between decoder<br />

and system do not agree with each other; which is most often noticed by non-working headlights.<br />

It would only make sense to switch the system from 14 steps to 28 or 128 speed steps rather<br />

than setting the decoder back to 14 steps, which would result in unnecessary poor drivability.<br />

All configuration variables are accessible; see the cab manual in question for programming procedure.<br />

The address is located in the registry’s position #1.<br />

The configuration variables #49 to #54 will have no effect, since the signal controlled speed influence<br />

is only supported by Zimo systems.<br />

ZIMO decoder with ROCO Lokmaus-2<br />

Although the Lokmaus-2 allows CV programming, its display is limited to two digits only and therefore limits<br />

the number of CV’s and their values to 99.<br />

Zimo decoders offer a special pseudo-programming feature with CV #7 (that normally stores the software<br />

version number) to allow unrestricted programming. It is called pseudo-programming because the permanently<br />

stored value in CV #7 cannot be overwritten but rather holds a temporary value that allows the Lokmouse2<br />

to be used for expanded programming capabilities (see CV table); the engine must not be running<br />

during the programming procedure!<br />

Example:<br />

To enter a value of 160 (which is not possible with a Lokmouse-2 because value is >99) to CV #5<br />

(max. speed) proceed as follows:<br />

First program CV #7 to 1, followed immediately by setting CV #5 to 60. No power interruptions between<br />

those steps are allowed. Explanation: The value 1 in CV #7 actually 01 (tens digit=0 and ones

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