Installation
7 (46)
3.3
Connections and Indicators
To ensure a good M-Bus signal, make sure that power ground (GND) is NOT
electrically connected to protective earth (PE).
Maximum cross sectional area in terminal block = 2.5 mm
2
Terminal block
Pin
Function
24VDC
GND
MBUS+
MBUS-
MBUS+
MBUS-
24VDC
+24 VDC
GND
Power ground
MBUS+
M-Bus connection
MBUS-
MBUS+
M-Bus connection
MBUS-
Ethernet connector (RJ45)
Pin
Function
ACTIVITY
LINK
1
8
1
TD+
2
TD-
3
RD+
4, 5, 7, 8
(reserved)
6
RD-
LED Indicators
ACT
OFF
Inactive, standby
ACT
ST
ACT
ST
Green
M-Bus readout
ST
Off
Application not running
Green
Application running
Orange
Initializing
Orange, flashing
M-Bus scan
Red
Error
M-Bus to Modbus-TCP Gateway User Manual
SCM-1202-0096-EN 2.1