Troubleshooting - Roco Z21switchDECODER Mode D'emploi

Bootloader mode (e.g. during firmware update)
Colour
Blue
Red
Green
White
Blue
Red
Green
White

8. Troubleshooting

Error flashes red:
The outputs of the Z21 switch DECODER are electronically protected against overload and short circuits via permanent measurement of
the total current. The maximum switch output of the decoder is 2.0 A. In the short term, even up to 2.5 A are permitted for ≤100 ms. If
the total current of all outputs permanently exceeds 2.0 A, all outputs are switched off and the red "Error" LED flashes for 3 seconds.
During this time, the decoder does not accept any new switch commands. The decoder then resumes normal operation. The outputs
are not switched back on automatically here, however, to simplify troubleshooting: Then manually switch the outputs on individually
(multiMAUS, App, ...) to find the actual cause of the short circuit.
Track numbers are shifted by four:
Check that the set addressing mode matches your control centre.
POM read (RailCom ) is not functioning:
®
Check the correct connection on the Z21 (P and N). See section
It may be that other control centres are not compatible with RailCom
Connected LED is not lit:
Ensure that the polarity is correct. The central connection to the corresponding output is the common plus. See section
Z21 switch DECODER.
Status Meaning
on
on
on Wait for data/commands from zLink.
on Bootloader mode active.
on
on
flashes briefly Data/commands are processed by the zLink.
on Bootloader mode active.
Operation on control centres from other
Installing the Z21 switch DECODER.
.
®
manufacturers.
Installing the
The Z21 is a FLEISCHMANN and ROCO innovation.
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