![background image](http://html1.mh-extra.com/html/abb/relion-rec670/relion-rec670_commissioning-manual_3377470070.webp)
Path in the local HMI under
Main menu/Configuration/Communication/SLM
configuration/Rear optical LON port
Table 14:
ADE Non group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Off
On
-
-
Off
Operation
TimerClass
Slow
Normal
Fast
-
-
Slow
Timer class
Path in the local HMI under
Main menu/Configuration/Communication/SLM
configuration/Rear optical LON port
Table 15:
LON commands
Command
Command description
ServicePinMsg
Command with confirmation. Transfers the node address to the LON Network Tool.
7.2
Optical budget calculation for serial communication
with LON
Table 16:
Example
Distance 1 km
Glass
Distance10 m
Plastic
Maximum attenuation
-11 dB
- 7 dB
4 dB/km multi mode: 820 nm - 62.5/125 um
4 dB
-
0.3 dB/m plastic: 620 nm - 1mm
-
3 dB
Margins for installation, aging, and so on
5 dB
2 dB
Losses in connection box, two contacts (0.75 dB/contact)
1.5 dB
-
Losses in connection box, two contacts (1dB/contact)
-
2 dB
Margin for repair splices (0.5 dB/splice)
0.5 dB
-
Maximum total attenuation
11 dB
7 dB
Section 7
1MRK 511 360-UEN A
Establishing connection and verifying the LON communication
64
Bay control REC670 2.1 IEC
Commissioning manual