Siemens SITRANS FUE950 Operating Instructions Manual page 34

Connecting
5.4 Add-on output and input modules
- M-Bus module refers to EN 1434-3 standard
- Connections for 2 x 2.5 mm² wires (shielded cable is recommended)
- Output is electrically insulated
- Max. voltage: 50 V DC
- Current consumption: As one M-Bus-load
- Primary or secondary addressing, default address is serial number (freely changeable via
SW-tool), see M-Bus communication setup
- Baud rate 300 or 2400 bauds
(M-Bus communication description availably on request).
M-Bus communication setup
Default settings for M-Bus communication can be changed by using a software tool, pc and
IrDA adapter.
M-Bus communication description is available on request, please contact Siemens.
For setup of M-Bus communication, please use HYDRO-SET
(http://www.hydrometer.com/systems/download.html).
HYDRO-SET
RS-232 communication module
The optional RS-232 communication module is a serial interface for communication via M-
Bus protocol (according to EN1434 standard) with external devices, e.g. a PC.
The board contains a 3-pole terminal strip with terminals marked 62 (Dat), 63 (Request) and
64 (Ground).
Figure 5-7
For communication with a PC due to signal modification to RS 232 level the device requires
a special adapter cable, see accessories (Page 63). The wire colors of the RS-232 adapter
cable must be connected as follows: 62 = brown; 63 = white; 64 = green.
(M-Bus communication description available on request.)
Installation of add-on modules
Typically, optional modules are ordered with the device and pre-mounted from factory in slot
1 and/or 2. In case add-on modules are to be installed afterwards (ordered separately as
accessories) install add-on modules according to the following:
32
is a registered trademark of Hydrometer GmbH.
®
RS232 module
software tool
®
Operating Instructions, 01/2010, SFIDK.PS.022.F4.02
SITRANS FUE950