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W-MBus Modems/Receiver/Repeater - Guide utilisateur / User guide version V1.8.2
50
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of of 50
EN
9.3.9 CRC: Cyclic Redundancy Check
The CRC is computed over the information from the previous block, with the following polynomial formula: x16+x13+x12+x11+x10+x8+x6+x
5+x2+1 (initial value = 0)
Please note: The repeater or Multiple addressing roles (CI = 0x81) are not covered with this summary. Please refer to EN13757-4:2005 stan-
dard.
9.4. Serial ports wiring
9.4.1 RS232 serial port
9.4.2 RS485 serial port
10.
Version history
User guide version
Contents
V1.8.2
Graphical charter
V1.8.1
Update Déclaration of conformity
V1.8
Update Déclaration of conformity
V1.7
Electricity meters info
V1.6
RS485 schematic mofified (see chapter 4.4.2)
V1.5.1
Serial port parameters (chapter 4)
V1.5
Battery repeater specification modified
V1.3
T1 mode performances updated
V1.2
Wireless M-Bus frame format for receiver implementation
V1.1
Repeater and receiver products added
V1.0
Document created