TB20, strain gauge weighing module | Edition 1 | 21.12.2018
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2.2.7
Module Coding
Electronic modules and base modules feature coding elements meant to prevent the wrong spare
electronic modules from being plugged in during maintenance and repairs.
These coding elements consist of a coding plug on the electronic module and a coding socket on the
base module (see following figure).
The coding plug and coding socket can each be in one of eight different positions. Each of these eight
positions is factory-assigned to a specific type of module (Digital In, Digital Out, Analog In, Analog
Out, Power) from the TB20 system. It will only be possible to plug an electronic module into a base
module if the position of the coding plug and the position of the coding socket match. If the positions
differ, the electronic module is mechanically blocked.
