Instructions

117 C-Control Pro IDE
© 2013 Conrad Electronic
RELBUS-Board overview
The RELBUS-Board has two UNIT-BUS connections that are mutually connected 1:1. Thus, e.g.,
one of the connectors can be plugged to the Applicationboard or Mainboard, and the second port
can be used as a junction that connects to another UNIT-BUS module. The cable length must not
exceed 2m, since this will cause communication errors. However, when longer lines are needed, it is
helpful to put an I2C power driver (Order No. 198280) in-between.
The RELBUS-Board is powered by the UNIT-BUS with power. The consumer power supply is made
at the screw clamps labeled "+" and "-" . The UNIT-BUS is used in this module only as a communic-
ation interface, and for the supply of the digital electronic part of the circuit. Consumers are powered
externally via the ports "+" and "-"!