Building block structure Manual BG41/BG42/BG43
2-2 Rev. 99/49
2.2 Building block structure
2.2.1 Building block BG41
The interface building block BG41 is a flat building block in double
Euro-format with two 48-pole base plugs in the construction system
ES 902. It has a width of 1 1/3 mounting places.
The building block BG41 has 1 interface, which can be adapted to
certain physical modes of transmission by means of interface
modules.
The front panel of the module consists of:
(1) A 25-pole SubD socket for the interface with
(2) hexagonal threaded bolts for fastening the plugs
(3) Two or four LEDs above the 25-pole SubD socket, which
provide information on the operational state and on each
connected module (see chapter 3).
(4) An 8-pole mini DIN socket for the service interface.
Fig. 2-2:Front panel of building block BG41
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