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Infocal 5 Communication Description Version 2.00
1. General Information
1.1. Guide to this document
This document describes the implementation of M-bus for INFOCAL 5. The implementation is based on
the following documents:
1. EN 1434-3 with sub document EN 60870-5
2. The M-Bus: A Documentation Version 4.8 November 11, 1997, M-Bus Usergroup
3. CEN/TC176-WG4-N107 Rev.4, Proposal for future M-Bus Application Layer, Prof. Dr. H. Ziegler
2. and 3. are located on http://www.m-bus.com/files/default.html as document: MBDOC48.EXE and
W4N107R4.EXE.
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed
material. Danfoss reserves the right to alter its product without notice. This also applies to products
already on order provided that such alterations can be made without subsequential changes being
necessary in specifications already agreed.
1.2. Parts of EN1434 implemented
Hardware
interface
Protocol standard
Optical port
EN 61107:1992
EN 60870-5-1
EN 60870-5-2
EN 60870-5-4
DATA port
( RS232 – 3,6 V )
EN 60870-5-1
EN 60870-5-2
EN 60870-5-4
M-Bus EN 60870-5-1
EN 60870-5-2
EN 60870-5-4
1.3. Other recommendations followed
Fulfils the following “Minimum Requirements for M-Bus approval of slaves and masters” written by
Prof.Dr.H.Ziegler Paderborn University (http://www.m-bus.com/files/default.html file “mbap1w2.exe”
which extracts the document “MBAPPR1.DOC”):
• Level A (Slave with minimum communication function)
• Level B (Slave with normal communication function) except for following:
o Unlimited communication frequency will reduce battery lifetime.
o No collision detect when data are send out.
o Peaks are not coded in DIF.
o INFOCAL 5 uses VIFE when necessary.
o Actual values are normally not older than 10 minutes. Receiving a REQ_UD2 the INFOCAL will
calculate after sending the response. The master can send out a new request REQ_UD2 and the
response will include the new calculated values.
For further details see appendix D.
1.4. Timing requirements
The implementation of M-bus for INFOCAL follows the timing requirements described in the standard EN
1434. For further information see chapter 8 Timing Requirements and Recommendations .
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