Inepro 4PU Series - M-bus Communication; Communicating via M-bus Output

Inepro Metering - 4PU & 4PS - 25
A2.1 Communicating via the M-bus output
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 rst install and congure 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
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, 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:
www.m-bus.com
Appendix 2 - M-bus
N
10
11
4
5
6789
L1 L1 L2 L2
L3 L3
S01
GND
S02
A
B/BUS2
BUS1
Tariff
IN
L1
OUT
L1
IN
L2
OUT
L2
IN
L3
OUT
L3
L1
IN
L2
L3
N
L1
OUT
L2
L3
10
11
4
5
6789
Tariff
S01
GND
S02
A
B/BUS2
BUS1
L1
L2
L3
L1
L2
L3
N