Patent ID: 6661236
Filing Date: 2003-12-09
Classification: G06F

Abstract:
A method of initializing a pluggable electrical unit in a modular system, said system comprising a base unit, at least one pluggable electrical unit, each pluggable electrical unit having module electronics and a read-only memory with identifiers that clearly identify said unit and an interface between the base unit and the pluggable electrical unit, said interface equipped with a variable resistor arranged in a feed line, said method comprising:bringing the variable resistor into its low-resistance state in a controlled manner after the elapse of a first waiting time, which begins with the insertion of the pluggable electrical unit in said system, connecting the read-only memory to the base unit after the elapse of a second waiting time, beginning with the end of the first waiting time, testing on the basis of the identifying identifiers, the compatibility of the pluggable electrical unit with the base unit, and disconnecting the read-only memory from the base unit and bringing the variable resistor in a controlled manner into its high-resistance state when said pluggable unit is not compatible with said base unit.