PURPOSE: To permit the synthetic verification of a system by analyzing the input operation instruction and registering the operation instruction sequence into a queue and executing the operation instruction and permitting the operation state change signal to be output, in the captioned apparatus for physical distribution control system.

CONSTITUTION: An operation instruction analyzing program 32 is started by an interrupt input apparatus 8, and the operation instruction is input from a digital input apparatus 8. The operation instruction analyzing program 32 detects the operation instruction timing of an objective facility 31 and analyzes the species and contents of the operation instruction, and searches for the operation sequence from an operation sequence constant 33 and registers it into a queue 34. While, if an operation state generation program 35 is started by a fixed-period timer, said program searches for the queue 34 in succession and detects the operation state change generation timing and outputs the state change signal through a digital output apparatus 10 according to the definition of position of the operation state signal corresponding to the signal No. With such a constitution, the synthetic verification for the system is permitted.