Kamstrup M-Bus Technical Description
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Kamstrup M-Bus Technical Description

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M-Bus
Technical Description
Kamstrup A/S
Industrivej 28, Stilling
DK-8660 Skanderborg
TEL: +45 89 93 10 00
FAX: +45 89 93 10 01
info@kamstrup.com
www.kamstrup.com

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  • Page 1 M-Bus Technical Description Kamstrup A/S Industrivej 28, Stilling DK-8660 Skanderborg TEL: +45 89 93 10 00 FAX: +45 89 93 10 01 info@kamstrup.com www.kamstrup.com...

  • Page 2: Table Of Contents

    Operation M-Bus Master ® M-Bus Slave for MULTICAL M-Bus Slave for MULTICAL ® Compact/MULTICAL ® M-Bus Slave for Kamstrup 162/382/351 Combi M-Bus Cascade module M-Bus Modem Test Installation of M-Bus Cable length Mounting 10. Data reading of M-Bus Data reading of heat meters M-Bus Slave for MULTICAL ®...

  • Page 3: Technical Description M-Bus

    M-Bus Slave, which is inserted at the modular space in the energy meter. It is unnecessary to program the integrating energy meter or the M-Bus Slave as the system is self- configuring. M-Bus Master Computer placed...

  • Page 4: M-Bus System

    If the last three digits of the customer number exceed 250 (e.g. 345) the first digit will be ignored M-Bus Cascade module and the ID number of the M-Bus Slave will only be M-Bus Modem determined by the two last digits (e.g. 45).

  • Page 5: Operation

    In case the bus system is turned on constantly, these initialization times will only appear in connec- It is optional whether the M-Bus Master is to be tion with installation. In addition, the initialization permanently switched on, or the bus system is to time of M-Bus Slaves is approx.

  • Page 6: M-Bus Master

    = closed current + approx. 17 mA. Power: The M-Bus Master can send and receive at 300 or Indicates that the M-Bus Master is supplied 2400 baud both over the optical connection possi- with power.

  • Page 7: M-Bus Slave For Multical

    M-Bus Slave for MULTICAL with pulse outputs 66-09-000-100 There is a difference between the M-Bus Slaves for MULTICAL ® III and MULTICAL ® MULTICAL ® transmits a larger amount of data. Please refer to paragraph 10: Data acquisition of M-Bus.

  • Page 8: M-Bus Slave For Compact/Multical Compact/Compact/Multical

    Data is automatically read every 12 hour, further- more data is collected during reset/start as well as when data has been sent from M-Bus Slave to M-Bus Master. Reset is produced by decoupling the supply power to the M-Bus system for a while (at least 1 minute).

  • Page 9: M-Bus Slave For Kamstrup 162/382/351 Combi

    M-Bus Slave to M-Bus Master. Reset is produced by decoupling the supply power to the M-Bus system for a while (at least 1 minute). The M-Bus Slave can also be initiated from the M-Bus Master by sending the format SND_NKE.

  • Page 10: M-Bus Cascade Module

    Master a new network with 38 energy meters and 1 M-Bus Cascade module or 40 M-Bus Slaves can be established. It is possible to connect up to 6 M-Bus Masters and thereby increase the number of energy meters in the network to a total of 250 meters (primarily addressing).
  • Page 11 The number of M-Bus Slave modules/cable length as a function of the number of M-Bus Cascade units in a Kamstrup M-Bus system. Cascade unit = M-Bus Total cabel lenght 1 Cascade module Total numbers of M-Bus Slaves Master 0,5/0,8 mm...

  • Page 12: M-Bus Modem

    8. M-Bus Modem An M-Bus system of up to 40 meters can be read Test via the M-Bus Modem. 1. When the modem has been installed, the line The M-Bus Modem can be mounted in both M-Bus voltage must be measured on clamps 70 and Master without a display and M-Bus Master with 71.

  • Page 13: Installation Of M-Bus

    The M-Bus terminals have the numbers 24 and 25. The cable length depends on the cable resistance The M-Bus is independent of polarity i.e. it is at no and capacity. The cable resistance depends on the consequence how the M-Bus wires are connected cable type and above all the cross section.
  • Page 14 230 VAC is connected on terminals 27 and 28. The control can possibly be made on a M-Bus Slave ® in a MULTICAL . The power must be between 30 and Power supply is connected on terminals 60 (+) 36 VDC, if communication is made on the M-Bus.

  • Page 15: Data Reading Of M-Bus

    10. Data reading of M-Bus A Kamstrup M-Bus system is read by means of a Data is read via the M-Bus Master through the PcM-Bus reading programme installed on a PC. IR-head, or via a data cable mounted in the bottom of the M-Bus Master.

  • Page 16: Compact/Multical 401

    See the PcM-Bus manual for further information. Reading equipment Data cable for reading IR head for reading Data cable or IR head must be used for correct transmission of meter data between M-Bus Master and PC. Order numbers: M-Bus Software PcM-Bus S75-30-007...

  • Page 17: Protocol

    The M-Bus concept includes the possibility of various commands from M-Bus Master to M-Bus CON_ACK Acknowledgement of the receipt Slave and from M-Bus Slave to M-Bus Master. of data from the M-Bus Master For the Kamstrup M-Bus system certain commands...

  • Page 18: M-Bus Slave To M-Bus Master

    Access: Counts 1 every time data is sent to the ACCESS M-Bus Master. Status: Is set by the M-Bus Slave, must be 00H for correct STATUS data – should be checked. See also page 26. SIGNATURE Signature: Not used by Kamstrup.

  • Page 19: Communication Process

    Code for electricity MEDIA ELEC. Access: Counts 1 every time data is sent to the M-Bus Master. ACCESS Status: Is set by M-Bus Slave. 00H for correct data. STATUS See also page 26. SIGNATURE Signature: Not used by Kamstrup. SIGNATURE...

  • Page 20: Reading Of Fresh Data Through E.g. Data Logging

    When using foreign masters and/or foreign 1. REQ_UD2 (adr.) RSP_UD1 software, the same commands are to be used. In order to collect heat meter data from a M-Bus The M-Bus Slave only supports the above- Slave REQ_UD1 must be sent from the M-Bus mentioned commands.
  • Page 21 RSP_UD1 MULTICAL ® III/MULTICAL ® Compact/MULTICAL ® STARTCHARACTER ID - No. TYPE A L-FIELD ID - No. TYPE A L-FIELD ID - No. TYPE A STARTCHARACTER ID - No. TYPE A C-FIELD MANUFAC 00101101 A-FIELD MANUFAC 00101100 CI-FIELD GEN. METER DATA HEAD Data head MEDIA (HEAT)
  • Page 22 RSP_UD1 MULTICAL ® STARTCHARACTER ID - NO. (e.g.) 06BCD L-FIELD ID - NO. 21BCD L-FIELD ID - NO. 67BCD STARTCHARACTER ID - NO. 31BCD C-FIELD MANUFAC. A-FIELD MANUFAC. CI-FIELD GEN. METER DATA HEAD DATA HEAD MEDIA (HEAT) RECORD ENERGY ACCESS RECORD WATER STATUS RECORD HOUR COUNTER...
  • Page 23 TRIP COUNTER VALUE 32 bit integer TRIP COUNTER VALUE 32 bit integer PULSE IN PULSE IN PULSE IN PULSE IN SPEC. DATA SPEC. DATA SPEC. DATA SPEC. DATA INFO INFO INFO INFO CHECKSUM STOPCHARACTER * Kamstrup 351 Combi: Reel energy...
  • Page 24 VIF: Value Information Field MULTICAL ® CODING THEME UNIT SIZE FACTOR 00001111 Energy J x 10 1000/100/10/1 00001110 Energy J x 10 00000101 Energy Wh x 10 00000110 Energy Wh x 10 00000111 Energy Wh x 10 100/10/1 00010111 Volume x 10 x 10 00010110...
  • Page 25 If multiplied with 10, 100 or 1000 the info field and the prog_NO. field change. INFO FIELD Reserved for info codes from heat meter = The factor method is used = Power x 10 = Energy x 10 = Energy x 100, Reading Energy x 100 = Energy x 1000, Reading Energy x 1000 The 2 most significant bits in “Energy”...

  • Page 26: Physical Properties

    M-Bus if the field is different from “0”. The M-Bus Slave makes up to three attempts, at intervals of 5 seconds, to collect correct data from the meter. If the STATUS field remains different from “0”, automatic data update, or the next user effected reading will be awaited.

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