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9. Plug-in modules
MULTICAL® 601 can be extended with a number of extra functions in the form
of plug-in modules. Below is a short description of the individual modules.
9.1 Data + pulse inputs, type 67-00-10
Data terminals are e.g. used for connecting a PC.
The signal is passive and galvanically separated
through optocouplers. Conversion into RS232 level
requires connection of data cable 66-99-106 (D-Sub 9F)
or 66-99-098 (USB) with the following connections:
62 Brown (DAT)
63 White (REQ)
64 Green (GND)
NB! If data reading must be compatible with
MULTICAL® 66-CDE, top module 67-06 must
be used in MULTICAL® 601.
The pulse inputs can be used for connecting electricity and water meters. Please
note the maximum pulse frequency and correct pulse coding (l/pulse and Wh/
pulse) which are selected by means of the FF and GG configuration.
65 - 66 Input A
67 - 68 Input B
9.2 M-Bus, type 67-00-20/27
M-Bus can be mounted in star, ring or bus topology. Depending on the power
supply of the M-Bus Master as well as the total cable resistance, up to 250 meters
can be connected.
Cable resistance < 29 Ohm
Cable capacity < 180 nF
The M-Bus network is to be connected to
terminals 24 and 25. The polarity is unimportant.
M-Bus is supplied with pulse inputs.
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