R-INSTRUKTION 087R2121 - Siemens

Infocal 5 Communication Description Version 2.00 

R-INSTRUKTION 

087R2121 

INFOCAL 5 Communication Protocol Version 2.00 

KM i1020.001.256 2000.11.03 

Mrk. KM (Approb./Rev.) Date 

Projektion Scale Matr./Spec. 

Danfoss standard 

Replace 

AZ / PE 21.11.2003 INFOCAL 5 

ENERGY-INT 5 

CLASSIC-S 

Design 

Version 2.00 

Approb. 

Confidential: Property of HYDROMETER GmbH, Germany. Not to be handed over to, 

copied or used by third party. Two- or three dimensional reproduction of contents to be 

authorized by HYDROMETER GmbH. 

No. 

087R2121 

1


Table of Contents 

1 General Information 4 

1.1 Guide to this document 4 

1.2 Parts of EN1434 implemented 4 

1.3 Other recommendations followed 4 

1.4 Timing requirements 4 

2 Addressing methods 5 

2.1 Primary addressing 5 

2.2 Secondary address 253 (FDH) 5 

2.3 Primary test address 254 (FEH) 7 

2.4 Primary broadcast address 255 (FFH) 7 

3 Set-up of Slave 7 

3.1 Initialisation of Slave (SND_NKE) 7 

3.2 Change Baud rate 7 

4 Normal reading 8 

4.1 Reading of measured values 8 

4.2 Reading of Calculator Status 9 

4.3 Reading of Fabrication Number 11 

4.4 Reading of Peak Values 12 

4.5 Reading of Actual Report values and Monthly Report 13 

4.6 Reading of AccountDay Record A or B 16 

4.7 Reading of ErrorLog 18 

5 Set-up parameters 20 

5.1 Set-up of Bus Address 20 

5.2 Set-up of Identification number 21 

5.3 Set-up of Date & Time 21 

5.4 Set-up of (security level 2) parameters 22 

6 Reading of Set-up parameters 24 

6.1 Reading of Bus Address 24 

6.2 Reading of (security level 2) parameters 25 

7 Application Reset 27 

7.1 Reset ErrorCode 27 

8 Timing Requirements and Recommendations 28 

8.1 Transmission with success 28 

2


8.2 Transmission with failure; in requesting direction 28 

8.3 Transmission with failure; in answering direction 29 

8.4 Key to 8.1, 8.2 og 8.3 29 

9 Appendix A - Value Information Field. 30 

9.1 Value Information for Energy 30 

9.2 Value Information for Power 30 

9.3 Value Information for TotalVolume 30 

9.4 Value Information for Volumeflow 30 

10 Appendix B 31 

10.1 Data type F 31 

10.2 ErrorCode on display. 31 

11 Appendix C – Examples 32 

11.1 Initialisation 32 

11.2 Loop for Data Request 32 

12 Appendix D - M-Bus Classification requirements 33 

3


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 

Optical port 

EN 61107:1992 

DATA port 

( RS232 – 3,6 V ) 

Protocol standard 

EN 60870-5-1 

EN 60870-5-2 

EN 60870-5-4 

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 . 

4


2. Addressing methods 

“A Field” can be following: 

2.1. Primary addressing 

“A Field” specifies the bus number (between 1 and 250). 

The default primary address for products leaving the factory can be derived from the serial no. placed on 

infocal 5’s forefront.: 

1. Use the left part of the serial no. (4 digits) 

2. If the 3 least significant digits of the 4 digit number makes a number, which is 250 or less, use the 3 

least significant digits for the primary address. 

3. If the 3 least significant digits of the 4 digit number makes a number, which exceedes 250, use the 2 

least significant digits. 

Example: Serial No results in Primary address 

3210 02N400 210 

4321 02N400 021 

2.2. Secondary address 253 (FDH) 

“A Field” = FDH 

Ident No. 

For secondary addressing, the Ident No, is needed. The default Ident no. for products leaving the factory 

can be derived from the serial no. placed on infocal 5’s forefront.: 

• Use the left part of the serial no. (4 digits) for Ident No. 

Example: Serial No results in Ident.No 

4321 02N400 4321 

2.2.1. Selecting a slave 

2.2.1.1. Request from master 

Name Length in bytes Value Description 

Start 1 68H 

L Field 1 0BH 

L Field 1 0BH 

Start 1 68H 

C Field 1 53H SND_UD 

A Field 1 FDH Secondary addressing 

CI Field 1 52H Mode 1 

Ident. No. 4 --H 8 BCD packed 

Identification number 

Manufr. 2 5068H Manufacture ID = “TCH” 

Version 1 01H INFOCAL5 protocol 

version. 

Medium 1 04H / Heat outlet / Heat inlet 

0CH 

Check Sum 1 --H 

Stop 1 16H 

2.2.1.2. Response from slave 


Ack 1 E5H Acknowledge to master 

If Ident. No., Manufr. and Version matches the values in the slave it is now selected to answer on what is 

sent on address FDH. 

5


2.2.2. Deselecting a slave by writing to none or to select another slave 



Start 1 68H 

L Field 1 0BH 

L Field 1 0BH 

Start 1 68H 



CI Field 1 52H Mode 1 

Ident. Nr. 4 00.00.00. 

00.H 

8 BCD packed 


Manufr. 2 0000H Manufacture ID 

Version 1 00H Calculator generation or 

version. 


0CH 


Stop 1 16H 

None or another Ident. Nr., Manufr. and Version. 


NO response. 

2.2.3. Deselecting a slave by CI Field = 56H 



Start 1 68H 

L Field 1 0BH 

L Field 1 0BH 

Start 1 68H 



CI Field 1 56H Mode 2 = deselect 

Ident. Nr. 4 --H 8 BCD packed 




version. 


0CH 


Stop 1 16H 




6


2.3. Primary test address 254 (FEH) 

The slave answers all request to “A Field” = FEH irrespective of its own primary address. The answer 

contains its own primary address. The address FEH is normally used for point to point communication 

with the infrared eye. 

2.4. Primary broadcast address 255 (FFH) 

The slave reacts on request to “A Field” = FFH but does not answer. Used by master for SND_NKE. 

3. Set-up of Slave 

3.1. Initialisation of Slave (SND_NKE) 

3.1.1. Request from master 


Start 1 10H 

C Field 1 40H SND_NKE 

A Field 1 --H 


Stop 1 16H 

3.1.2. Response from slave 



Address selection reset. Baud rate is remaining on its status after SND_NKE. 

3.2. Change Baud rate 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 53H/73 SND_UD 

H 

A Field 1 --H 

CI Field 1 B8H 

B9H 

BAH 

BBH 


Stop 1 16H 

300 Baud 

600 Baud 

1200 Baud 

2400 Baud 

Note: 

Serial data channel supports all shown baud rates. The baud rate for serial data channel after 

power on reset is the same as it was set earlier. In production the baud rate is default set to 2400 

baud. Optical port only supports 300, 600 baud. The default baud rate for optical port after power 

on reset is 300 baud. 




7


4. Normal reading 

4.1. Reading of measured values 

8 



Start 1 10H 

C Field 1 5BH/7 Request for UD2 

BH 

A Field 1 --H 


Stop 1 16H 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 08H 

A Field 1 --H 

CI Field 1 72H 

Ident. Nr. 4 --H 8 BCD packed 




version. 


0CH 

Access No. 1 --H Increments for each 

RSP_UD 

Status 1 00H Application errors 

Signature 2 0000H For future use 

DIF 1 0CH BCD 8 

VIF 2 FD11H Customer number 

Value 4 -- Customer number 


VIF 1 --H Energy 

See Appendix A. 

Value 4 -- TotalEnergy 


VIF 1 --H Volume 


Value 4 -- TotalVolume 


VIF 1 --H Power 


Value 4 -- Power 


VIF 1 --H Volumeflow 


Value 4 -- Volumeflow


DIF 1 0BH BCD 6 

VIF 1 5AH Flow Temperature 100 

m°C 

Value 3 -- FWTemperature 


VIF 1 5EH Return Temperature 100 

m°C 

Value 3 -- RVTemperature 


VIF 1 61H Temperature difference 

10 mK 

Value 3 -- DeltaT 

DIF 1 04H 32 bit integer 

VIF 1 22H On Time hours 

Value 4 -- HourCounter 


VIF 1 6DH Date & Time 

Value 4 -- Date & Time according 

to data Type F 


VIF 1 FDH Select VIFE table FDH 

VIFE 1 17H Error flags (binary) 

Value 1 --H ErrorCode on display. 

See Appendix B. 


Stop 1 16H 

4.2. Reading of Calculator Status 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 53H/ SND_UD 

73H 

A Field 1 --H 

CI Field 1 51H Data send (master to 

slave) 

DIF 1 08H Selection telegram 

VIF 1 7FH Manufacture specific 

Param select 1 10H Status structure 


Stop 1 16H 




9




Start 1 10H 

C Field 1 5BH/7BH Request for UD2 

A Field 1 --H 


Stop 1 16H 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 08H 

A Field 1 --H 


Ident. Nr. 4 --H 8 BCD packed Identification number 


Version 1 01H INFOCAL5 protocol version. 

Medium 1 04H / 0CH Heat outlet / Heat inlet 

Access No. 1 --H Increments for each RSP_UD 



DIF 1 0FH Sp1 Manufacture specific data 

Param 

1 10H Status structure 

select 

StatusInfo 1 --H Bit 7: Write OK = 1,Not OK = 0 

Bit 6: HWLock On = 1,Not On = 0 

Bit 5: High Res On = 1,Not On = 0 

Bit 4 – 0: Not used 

ErrorCode 1 --H ErrorCode on display. 


SW version 4 --H 

ResetDeltaTStatus 1 --H Percent of reset status. 


Stop 1 16H 

10


4.3. Reading of Fabrication Number 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 53H/73H SND_UD 

A Field 1 --H 

CI Field 1 51H Data send (master to slave) 


VIF 1 78H Fabrication Number 


Stop 1 16H 






Start 1 10H 


A Field 1 --H 


Stop 1 16H 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 08H 

A Field 1 --H 


Ident. Nr. 4 00.00.00.01.H 8 BCD packed Identification number 


Version 1 01H Calculator generation or version. 

Medium 1 04H Heat outlet 

Access No. 1 01H Increments for each RSP_UD 



DIF 1 0CH 8 digit BCD 

VIF 1 78H Fabrication Number 

Value 4 -- Fabrication Number = ID1 


Stop 1 16H 

11


4.4. Reading of Peak Values 

12 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 53H/ SND_UD 

73H 

A Field 1 --H 




Param select 1 30H Peak Values. 


Stop 1 16H 






Start 1 10H 


A Field 1 --H 


Stop 1 16H 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 08H 

A Field 1 --H 










VIF 1 --H PeakValue is Volumeflow or Power. 


Value 4 -- PeakValue0 


VIF 1 6DH Date & Time


Value 4 --H Date & Time according to data Type 

F for PeakValue0 


















Param select 1 30H Peak Values. 


Stop 1 16H 

4.5. Reading of Actual Report values and Monthly Report 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 


A Field 1 --H 




Param select 1 80H 

81H 

82H 

83H 

84H 

85H 

86H 

87H 

88H 

89H 

8AH 

8BH 

8CH 

8DH 

8EH 

8FH 

Actual Report values. 

1. Monthly Report 















13


90H 

91H 

92H 

93H 

94H 

95H 

96H 

97H 

98H 


Stop 1 16H 














Name Length in bytes Value 

Start 1 10H 


A Field 1 --H 


Stop 1 16H 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 08H 

A Field 1 --H 





















VIF 1 

--H or 

Tarif 1 isEnergy, 

See Appendix A 

14


22H or On Time in hours. 

Value 4 -- Tarif 1 


VIF 1 

--H or 

22H 

Tarif 2 isEnergy, 

See Appendix A 

or On Time in hours. 



VIF 1 --H Counter A is Energy or 

TotalVolume. 


Value 4 -- Counter A 


VIF 1 --H Counter B is Energy or 

TotalVolume. 


Value 4 -- Counter B 


VIF 1 --H PeakValue is Volumeflow or Power 


Value 4 -- PeakValue 







F 




Value 1 --H ErrorCode on display. See 

Appendix B. 


Param select 1 80H Monthly Report 

: 

98H 


Stop 1 16H 

15


4.6. Reading of AccountDay Record A or B 

16 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 


A Field 1 --H 





9AH 

AccountDay Record A 

AccountDay Record B 


Stop 1 16H 






Start 1 10H 


A Field 1 --H 


Stop 1 16H 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 08H 

A Field 1 --H 














See Appendix A.








VIF 1 

--H or 

22H 

Tarif 1 is 

Energy, See Appendix A 




VIF 1 

--H or 

22H 

Tarif 2 is 

Energy, See Appendix A 




VIF 1 --H Counter A is Energy or 

TotalVolume. See Appendix A 

Value 4 -- Counter A 


VIF 1 --H Counter B is Energy or 

TotalVolume. See Appendix A 

Value 4 -- Counter B 




Value 4 -- PeakValue 







F 




Value 1 --H ErrorCode on display. 




9AH 

Account Day Record A 

Account Day Record B 


Stop 1 16H 

17


4.7. Reading of ErrorLog 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 53H/7 SND_UD 

3H 

A Field 1 --H 





22H 

23H 

24H 

25H 

26H 

27H 

28H 

29H 

2AH 


Stop 1 16H 

1. (newest) Error in 

ErrorLog 

2. Error in ErrorLog 








10. (oldest) Error in 

ErrorLog 






Start 1 10H 


A Field 1 --H 


Stop 1 16H 

18




Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 08H 

A Field 1 --H 












Value 1 --H ErrorCode 1 – 10. 



VIF 1 6DH Date & Time according to data Type F 

Value 4 --H OccurredTime 1-10 


VIF 1 6DH Date & Time according to data Type F 

Value 4 --H DisappearedTime 1-10 



: 

2AH 


Stop 1 16H 

1. (newest) Error in ErrorLog 

10. (oldest) Error in ErrorLog 

19


5. Set-up parameters 

5.1. Set-up of Bus Address 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 


A Field 1 --H 


DIF 1 01H 8 Bit integer 

VIF 1 7AH Bus Address 

Value 1 --H Bus Address 


Stop 1 16H 




20


5.2. Set-up of Identification number 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 


A Field 1 --H 


DIF 1 0CH 8 digit BCD 

VIF 1 79H Identification 

Value 4 -- Identification number 


Stop 1 16H 




5.3. Set-up of Date & Time 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 


A Field 1 --H 




Value 4 --H Date & Time according to data Type F 


Stop 1 16H 




21


5.4. Set-up of (security level 2) parameters 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 


A Field 1 --H 



Param select 1 02H Security level 2 parameters 

UserPassword 2 --H Must match UserPassword in the 

Calculator 

NewUserPassword 2 --H New UserPassword to the Calculator 

Menu1 4 --H 

Menu2 4 --H 

Menu3 4 --H 

Menu4 4 --H 

Menu5 4 --H 

ResetMenu 4 --H 

TarifLimit1 4 --H 


OnOff1Amount 4 --H 


AmountPrPulse2 4 --H 


PreCounter2 2 --H 


ID2 4 --H 

Info6 4 --H 

AccountDate1 2 --H 


PeakType 1 --H 

PeakPeriod 1 --H 

TarifType 1 --H 

ReportDay 1 --H 

KCounterA 1 --H 

KCounterB 1 --H 

Info1 1 --H 


Stop 1 16H 




22




Start 1 10H 


A Field 1 --H 


Stop 1 16H 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 08H 

A Field 1 --H 








Signature 2 0000 For future use 

H 


Param select 1 10H Status structure 

StatusInfo 1 --H Write OK/Not OK, HW Lock, High 

Resolution, Module no. 

ErrorCode 1 --H ErrorCode on display. 


SW version 4 --H 

ResetDeltaTStatus 1 --H Percent of reset status. 


Stop 1 16H 

23


6. Reading of Set-up parameters 

6.1. Reading of Bus Address 

24 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 


A Field 1 --H 





Stop 1 16H 






Start 1 10H 


A Field 1 --H 


Stop 1 16H 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 08H 

A Field 1 --H 









DIF 1 01H 8 Bit integer 


Value 1 01H Bus Address 


Stop 1 16H


6.2. Reading of (security level 2) parameters 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 


A Field 1 --H 






Stop 1 16H 






Start 1 10H 


A Field 1 --H 


Stop 1 16H 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 

C Field 1 08H 

A Field 1 --H 


Ident. Nr. 4 00000001H 8 BCD packed Identification no 









Menu1 4 --H 

Menu2 4 --H 

Menu3 4 --H 

Menu4 4 --H 

25


Menu5 4 --H 

ResetMenu 4 --H 









ID2 4 --H 

Info6 4 --H 



PeakType 1 --H 

PeakPeriod 1 --H 

TarifType 1 --H 

ReportDay 1 --H 

KCounterA 1 --H 

KCounterB 1 --H 

Info1 1 --H 

Param2Cnt 1 --H Write counter for Param2 


Stop 1 16H 

26


7. Application Reset 

7.1. Reset ErrorCode 

The reset level is checked against Param0.Reset 



Start 1 68H 

L Field 1 --H 

L Field 1 --H 

Start 1 68H 


A Field 1 --H 

CI Field 1 50H Reset 

Reset Subcode 1 81H Reset ErrorCode 


Stop 1 16H 




27


8. Timing Requirements and Recommendations 

8.1. Transmission with success 

Time axis 

REQUEST 

address = n 

T PROT 

T D ≤ t ≤ T R 

RESPOND 

address = n 

T PROT 

REQUEST 

address n 

T PROT 

8.2. Transmission with failure; in requesting direction 

I = 0 

REQUEST 

address = n 

I = I + 1 

Time axis 

T PROT 

no 

I = 3 

error 

t > T R 

yes 

t ≥ T LI 

REQUEST 

address n 

I = I + 1 

T PROT 

28


8.3. Transmission with failure; in answering direction 

8.4. Key to 8.1, 8.2 og 8.3 

t D 

i 

11 t BIT (delay 

time) 

number of tries 

300 Baud 600 Baud 1200 Baud 2400 Baud 

36,7 msec 18,3 msec 9,17 msec 4,58 msec 

t BIT 1 / Baud rate [s] 3,33 msec 1,67 msec 833 µsec 417 µsec 

1 char 11 t BIT (character 

time length) 

t PROT (number of frame 

characters) * 11 

t BIT (frame length) 

t R 50 ms + 30 * 11 

t BIT (reaction time) 

t FBA (actual frame 

length in 

characters) * 11 

t LI 

t BIT 

3 * 11 t BIT (line 

idle) 

36,7 msec 18,3 msec 9,17 msec 4,58 msec 

(number of 

frame 

characters) * 

36,7 msec 

(number of 

frame 

characters) * 

18,3 msec 

(number of frame 

characters) * 9,17 

msec 

(number of 

frame 

characters) * 

4,58 msec 

1,15 sec 0,60 sec 0,325 sec 0,1875 sec 

(actual frame 

length in 

characters) * 

36,7 msec 

(actual frame 

length in 

characters) * 

18,3 msec 

(actual frame 

length in 

characters) * 9,17 

msec 

(actual frame 

length in 

characters) * 

4,58 msec 

110 msec 55 msec 27,5 msec 13,8 msec 

29


9. Appendix A - Value Information Field. 

9.1. Value Information for Energy 

Calculator DIF = BCD 8 VIF VIFE 

xxxxx.xxx MWh OCH kWH 06H 

xxxxxx.xx MWh OCH 10 kWh 07H 

xxxxxxx.x MWh OCH 10 kWh * 10 87H 77H 

xxxxxxxx MWh OCH kWh * 10E3 86H 7DH 

xxxxx.xxx kWh OCH Wh 03H 

xxxxxx.xx kWh OCH 10 Wh 04H 

xxxxxxx.x kWh OCH 100 Wh 05H 

xxxxxxxx kWh OCH kWh 06H 

xxxxx.xxx GJ OCH MJ 0EH 

xxxxxx.xx GJ OCH 10 MJ 0FH 

xxxxxxx.x GJ OCH 10 MJ * 10 8FH 77H 

xxxxxxxx GJ OCH MJ * 10E3 8EH 7DH 

xxxxx.xxx Gcal OCH MJ 0EH 

xxxxxx.xx Gcal OCH 10 MJ 0FH 

xxxxxxx.x Gcal OCH 10 MJ * 10 8FH 77H 

xxxxxxxx Gcal OCH MJ * 10E3 8EH 7DH 

9.2. Value Information for Power 


xxxxx.xxx MW OCH kW 2EH 

xxxxxx.xx MW OCH 10 kW 2FH 

xxxxxxx.x MW OCH 10 kW * 10 AFH 77H 

xxxxxxxx MW OCH kW * 10E3 AEH 7DH 

xxxxx.xxx kW OCH W 2BH 

xxxxxx.xx kW OCH 10 W 2CH 

xxxxxxx.x kW OCH 100 W 2DH 

xxxxxxxx kW OCH kW 2EH 

9.3. Value Information for TotalVolume 


xxxxx.xxx m3 OCH l 13H 

xxxxxx.xx m3 OCH 10 l 14H 

xxxxxxx.x m3 OCH 100 l 15H 

xxxxxxxx m3 OCH m3 16H 

9.4. Value Information for Volumeflow 


xxxxx.xxx m3/h OCH l/h 3BH 

xxxxxx.xx m3/h OCH 10 l/h 3CH 

xxxxxxx.x m3/h OCH 100 l/h 3DH 

xxxxxxxx m3/h OCH m3/h 3EH 

30


10. Appendix B 

10.1. Data type F 

Type F = Compound CP32: Date and Time 

2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 

2 15 2 14 2 13 2 12 2 11 2 10 2 9 2 8 

2 23 2 22 2 21 2 20 2 19 2 18 2 17 2 16 

2 31 2 30 2 29 2 28 2 27 2 26 2 25 2 24 

min: UI6 [bit 0 to 5] 

hour: UI5 [bit 8 to 12 

day: UI5 [bit 16 to 20] 

month: UI4 [bit 24 to 27] 

year: UI7 [bit 21 to 23, 28 to 31] 

hundred year: UI7 [bit 13 to 14] 

The year is 1900 + 100*hundred year + year 

10.2. ErrorCode on display. 

The ErrorCode byte is coded as: 

1. Error on Forward temperature for more than 1 hour Bit 0 

2. Error on Reverse temperature for more than 1 hour Bit 1 

3. Internal EEPROM error Bit 2 

4. Difference temperature but no flow for more than 48 hours Bit 3 

5. Overflow error. Flow 1 input > Qsmax Bit 4 

31


11. Appendix C – Examples 

PC with 

M-Bus Master 

SW 

Service 

Tool 

M-Bus 

Master 

INFOCAL 5 

Unit 1 

INFOCAL 5 

Unit 2 

INFOCAL 5 

Unit 3 

INFOCAL 5 

Unit 4 

INFOCAL 5 

Unit 5 

11.1. Initialisation 

INFOCAL 5 always start up with a baud rate of 300 Baud after a power up. 

The primary (and secondary) address is normally a part of the Customer number, which can be seen 

on the display. 

The primary (and secondary) address can however be changed by use of a Service Tool. 

By sending a SND_NKE the baud rate is set to 300 Baud and the address selection for secondary 

address is cleared. 

To increase the read out speed it is possible to change the baud rate to 2400 Baud (or another baud 

rate) by sending the command described in chapter: 3.2 Change Baud rate. In the above shown 

system with 5 units of INFOCAL 5 the easiest way is to use the broadcast address 255 to change the 

baud rate for all units at the same time. 

11.2. Loop for Data Request 

To read out data on the above system with 5 units of INFOCAL 5 just send the command shown in 

chapter: 4.1 Reading of measured values to address 1, then the command to address 2, 3, 4 and then 

the command to address 5. 

32


12. Appendix D - M-Bus Classification requirements 

Compare of INFOCAL 5 M-bus implementation and M-Bus Classification requirements by 

Prof.Dr.H.Ziegler Paderborn University. 

A) Level A (Slave with minimum communication function) INFOCAL comments: 

I) Meets all requirements of EN1434-part 3 Yes 

II) 

Physical Layer 

1.) Current Requirements:


B) Level B (Slave with normal communication function) INFOCAL comments: 

I) Meets all requirements of EN1434-part 3 Yes 

with the following restrictions: 

1.) Only variable protocol Yes 

2.) Only mode 1 (LSB first) Yes 

II) 

Physical Layer 

1.) Current Requirements:


IV) 

Application Layer 

1.) For heatmeters: 

Minimum required data record answer of meter to first 

REQ_UD2 with set FCB-Bit after an SND_NKE. 

May require a previous application reset (CI=$50) 

FCB-Bit follows the 

master. 

a) Fixed header of variable protocol Yes 

b) Accumulated actual energy and volume 

data formats: variable protocol (BIN or BCD). 

Data types BIN or BCD 4,6 or 8 bytes 

Energy and volume in 

variable protocol with 

DIF = BCD8 

c) Return temperature in °C Flow temperature and 

Return temperature in 

100 m°C 

d) Temperature difference with a resolution of at least Temperature difference 

10mK or both temperatures with a resolution of in 10 mK

R-INSTRUKTION 087R2121 - Siemens

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