AUTOMATIC I/O ADDRESS ALLOCATING DEVICE FOR PROGRAMMABLE CONTROLLER

摘要

PURPOSE:To realize the automatic allocation of addresses in serial numbers and to reduce the program developing man-hour by using an I/O address allocating means which allocates the addresses of input/output modules in serial numbers to the input/ output control variables respectively with reference to the action/reciprocal action correspondence data. CONSTITUTION:An I/O address allocating means 4 supplies a specification describing program to extract successively the input/output control variables and refers to the action/reciprocal action correspondence data after extraction of the action instructions out of those control variables for extraction of the reciprocal actions when the addresses of input/output modules are allocated to said control variables based on the input/output module characteristic data. Thus the input/output control variables including the reciprocal actions are extracted out of the specification describing program and at the same time allocated in serial numbers. In this case,it is possible to avoid the double allocation by confirming an allocated/unallocated state. Thus the relative control symbols of sequence control actions are allocated nearby in the form of serial numbers. As a result, the debugs are facilitated and the input/output control signals are automatically allocated.