The SNE can connect to the M-Bus network devices
by using the M-Bus Level Converter. Four components are needed: USB cable (Type B),
USB-to-RS-232 adapter (code number ACC-USBRS232-0), serial connection cable
(INT-DX-KAB01), and the M-Bus Level Converter. After installation and wiring are
complete, refer to the
Network Engine and Server Commissioning for M‑Bus Vendor Integration
Application Note (LIT-12013149)
for additional
information.
Note: Use the USB-to-RS-232
adapter described in this section if you are replacing an NAE with an SNE model, and
you used the M-Bus Level Converter for integrating the M-Bus network to the NAE's
RS-232 port. The USB-to-RS-232 adapter requires an external power supply as it does
not receive power from the USB connection.
-
Use cable INT-DX-KAB01 to connect the USB-to-RS-232 adapter to the RS-232
connection on the M-Bus Level Converter. Wire to terminals GND, RxD, and
TxD.
Figure 1. Connecting SNE to M-Bus Network using serial M-Bus Level Converter
Callout Description 1 USB connection:
Connect USB cable from SNE to USB-to-RS-232 adapter
2 RS-232 wire connection (serial cable INT-DX-KAB01):
5: TxD (transmit data); PIN 2 on RJ-12
6: RxD (receive data); PIN 3 on RJ-12
7: GND (ground); PIN 5 on RJ-12
3
Power connections (24 VAC/DC):
9: PE
11: 24+ V/~
12: 24- V/~
4
M-Bus connections:
13: M+
14: M-