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3.4 RS-232
M-Bus Master MultiPort 250L's RS-232-connection can be used for M-Bus communication on an equal basis with the other
serial connections.
The following communication speeds can be used for M-Bus communication:
•
300 Baud 8E1
•
2400 Baud 8E1
•
9600 Baud 8E1
Maximum recommended cable length is 15 m.
The master's integrated port controller makes sure that communication is only possible on one serial port at a time.
The master is available with a factory-mounted 145 cm RS-232 cable fitted with a DB9F female connector.
12
5
4
3
2
1
9
8
7
6
RS-232 connector type DB9F
55121391_B1_GB_12.2013
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