T H E M O D E R N M - B U S T E C H N O L O G Y
PiiGAB Process Information i Göteborg AB
7
81
0M
.E
.1
.1
4
Female socket
Male plug
Female socket
Male plug
2.5
M-Bus specifications
Table 2-3. M-Bus specifications
Connection
Description
Communication speed
300 – 9600 bps
(Normal 300 or 2400 bps)
Voltage ground level (”1”)
40V (±1V)
Voltage zero level (”0”)
28V (±1V)
Short circuit level
140mA
Internal resistance
<100 Ohm
Number of units
20 or 60
(each unit maximum load 1.5mA)
2.6
Ethernet connection
Communication speed: 300 – 230000bps
Connector type: 8 Position Modular (RJ45)
2.7
Serial connection (RS232)
Communication speed: 300 – 38400bps
Connector type: 6 Position Modular (RJ12)
