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
9
81
0M
.E
.1
.1
4
Female socket
2.9
Communication cables
The serial port can be used in four different ways with the help of five different
adapters.
The following four ways are possible
Serial to M-Bus
Configuration of the gateway
Ethernet to the serial port
Spy possibility
2.9.1
Pin connection for module contact RJ12
In figure 2-2 the pin location in the female module contact RJ12 in the gateway
are shown
Figure 2-2 Pin description RJ12 socket
Table 2-4. Connections in module contact RJ12
Pin Number Direction
Comment
1
GND
Ground
2
Rx
M-Bus
Serial
3
Rx
Serial
Ethernet
4
Tx
Ethernet
Serial
5
Tx
Serial
M-Bus
6
N/A
Not used
The following section describes the different adapters that can be connected to the
gateway. A more detailed description including examples can be found in
chapter 6.