User manual

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
18
1 TD+
2 TD-
3 RD+
4, 5, 7, 8 (reserved)
6 RD-
LED Indicators
ACT
OFF Inactive, standby
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