roco Z21 Signal Decoder - Programming on Main (POM)

Model Railway Control Unit
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6.3 Con guration via POM
The Z21 signal DECODER can be congured for your applications on the main track via POM programming commands and CVs. “POM”
stands for “programming on the main” (programming on the main track), and “CV” stands for “conguration variable”, which are
described in detail in the section CV list. No programming track is required.
If the DCC control centre and the Z21 control centres have a RailCom
®
receiver, these CVs can not only be written on, but also read.
When using the Z21 Single or Dual BOOSTER (10806, 10807) and the CAN-Bus, POM reading is also possible in the booster section.
INFORMATION: Before POM programming with control centres from other manufacturers, set the addressing mode of the Z21
signal DECODER to “RCN-213”, see also section Operation on control centres from other manufacturers.
When programming on the main track, a distinction must be made between POM programming commands for accessory decoders
(alias accessory decoders) and for loco decoders.
6.3.1 Con guration via POM programming commands for accessory decoders
When using POM programming commands for accessory decoders, the Z21 signal DECODER can be congured using the Z21-Main-
tenance Tool at any time even when installed.
It is essential to ensure here that the correct “turnout number” (= signal address) / decoder address has been selected before reading
or writing, so that the desired signal decoder is also actually actuated with the programming commands.
* RailCom
®
is a technology developed by Lenz Elektronik GmbH for transmitting data from the decoder to the digital control centre.