INITIAL DIAGNOSTIC DEVICE IN EXTRUSION MOLDING CONTROLING DEVICE

PURPOSE:To make maintenance of an extrusion molding controlling device easy by detecting and comparing an assigned code which has been assigned in a plurality of kinds of circuit wiring board arranged in the extrusion controlling device at a time for closing a power source thereof and outputting an error signal when the detected assigned code is noncoincident with the assigned code at a time of initial setting. CONSTITUTION:When the power source of an extrusion controlling device is closed, a detection means 101 detects the assigned code of a circuit wiring board arranged in the extrusion controlling device at a time for closing the power source. A comparing means 102 compares the detected assigned code with the assigned code of the circuit wiring board at an initial point of time which has been stored in a first memory means 100. When both the assigned codes are noncoincident, an error signal is output. Thereby the proper initial diagnoses in the extrusion controlling device is performed and maintenance thereof is made easy.