Wago - 4PU & 4PS - 25
Appendix 2 - M-Bus
A2.1 Communication via M-Bus
The 4PU and 4PS meters are equipped with an M-bus port, the data can be read out via this port. The communication protocol
conforms to the EN13757-3 standard.
The meter can communicate with your PC. In order to read out the meter registers first install and configure the PC software. Use
an M-bus level converter to connect the PC and the meter. The cable should be connected to terminals 8 and 9. The default
communication address of the meter is 00.
The defaults for M-bus communication are:
•
Baud rate 2400
•
8 data bits
•
Even parity
•
1 stop bit
4PU:
4PS:
The secondary addressing (253/FD) is preset to the last 8 digits of the serial number printed on the side of the meter. However
this can be changed to a more convenient number through IR or M-bus communication.
The baud rate can be changed to values 9600, 4800, 2400, 1200, 600 and 300 baud. Data, parity and stop bit cannot be changed.
For the registers used in the meter and how to interpreted the data, please use the M-bus register map on the next page.
More detailed information on M-Bus can be found:
Содержание 4PS
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