Kamstrup MULTICAL 402, Technical Description, Page: 77 / 113

MULTICAL® 402
Kamstrup A/S · Technical Description · 5512-742_M1_GB_01.2016
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11.4 Modules
11.4.1 Data + pulse inputs (type: 402-0-10) (PCB 5550-1025)
The module has a galvanically separated data port which interoperates with the KMP protocol (see paragraph 12).
The data output can be used for e.g. connection of external communication units or other hardwired data
communication which it is not expedient to carry out via optical communication on the meter’s front.
See paragraph 11.1.2 Pulse inputs VA and VB concerning the function of the pulse inputs.
The module includes data connection, which can e.g. be used for the external reading plug meant for Kamstrup’s
hand-held terminal or hardwiring of PC connection.
The data connection is galvanically isolated by optocouplers, which makes it necessary to use data cable type 66-
99-105 or 66-99-106 in order to adapt the signal to RS232 level which suits a PC or Kamstrup’s hand-held
terminal.
See paragraph 12.
Data Communication for information on data sequences and protocols. If the computer does
not have a COM-port, data cable with USB type 66-99-098 can be used.
11.4.2 Data + pulse outputs (type: 402-0-11) (PCB 5550-1026)
See paragraph 11.4.1 re data connection and paragraph 11.2 re pulse outputs.
11.4.3 M-Bus + pulse inputs (type: 402-0-20) (PCB 5550-1030)
The M-bus module is powered through the M-bus network and is thus independent of the meter’s internal supply.
Two-way communication between M-bus and energy meter is carried out via optocouplers providing galvanic
separation between M-bus and meter. The module supports both primary, secondary and enhanced secondary
addressing. The module can communicate at communication speeds of 300, 2400 or 9600 baud and
automatically detects the speed used.
See paragraph 11.3 Pulse inputs VA and VB concerning the function of the pulse inputs.