Changing Nmk (Channel) Temporarily - Siemens SIMATIC Power Line Booster Operating Instructions Manual

System configuration and system status (web interface)
6.5 Expert functions
6.5.1

Changing NMK (channel) temporarily

Figure 6-26 Changing NMK temporarily
The NMK (Network Management Key) of the Power Line Boosters is set with the DIP
switches on the basic device for regular operation. This key ensures that only PLB devices
with identical NMK can communicate with each other, which is why all devices must have the
same NMK for regular operation. During commissioning, you can change the NMK
temporarily using the Expert functions (Page 113), for example, to reach slaves in the
segment with a different NMK. You can select the four possible NMKs in the pull-down menu
and "apply" the key temporarily.
For plant installations with permanent communication and switchover of the sliders via relay
(double slider solution in an application), the slaves on the vehicle have different NMKs. By
changing the NMK on the master temporarily, you have a convenient option to reach all
slaves for a firmware update, for example.
The NMK that is configured over the DIP switches becomes active again as soon as you
"Restore the standard" or end the web session through logging off, automation logout or
connection interruption.
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Operating Instructions, 11/2019, A5E36203125A-AG
Power Line Booster