The connection between each module and the bus board is carried out by a ribbon cable with 10 or 16 pins. Both sides of the cable are equipped with a female connector. At the bus board side always a 16 pin connector is used (even in case of a 10 pin cable). At the module side a 10 or 16 pin connector is used depending upon the width of the ribbon cable (10 or 16 pins). One of the wires of the ribbon cable is coloured (typically red or blue). At the bus board side the colored wire has to show to the bottom which is labeled "-12V" or in other words: the colored wire indicates -12V. At the module side the colored wire has to show to the bottom if the orientation of the 10 or 16 pin male connector is vertical. If the orientation of the of the 10 or 16 pin male connector is horizontal the colored wire has to show to the left (rear view to the module), except module A-111-5

‼️ The document A100_bus_orientation.pdf shows the different versions. In addition the installation of modules is described in the A-100 user's manual on pages 4 - 6 (see MANUALS for details).

Important: Do not use bus boards from other manufacturers with boxed headers that urge you to connect the cable in the wrong way ! It is essential that: colored strip = -12V = bottom

• Note 1: As each module comes with an installed bus connection cable one has normally not to look after the connection at the module. Only if a cable has been removed by the customer it's important to know how the cable has to be re-installed at the module side.
• Note 2: There are some module which required special bus connection cables (e.g. A-143-1/2/3) as these modules are made of several pc boards and a special bus cable with several female connectors is used.