Description of the concentrator module
Bus Input A B C D terminal block
Terminal block for connecting the RS-485 bus from the central unit (For use on bus mode. In
stand-alone is not used)
A
Data Bus "A" (green if you use the cable MARSS ALM-6021)
B
Data Bus "B" (yellow if you use the cable MARSS ALM-6021)
C
Negative power supply from central unit ALM-6800 (black if you use the cable MARSS ALM-
6022 and any other cables)
D
+24V Positive power supply from central unit ALM-6800 (red if you use the cable MARSS
ALM-6022)
Installation and Programming Manual V1.2
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