| 摘要 |
<p>PURPOSE:To monitor the operation state of each program module by setting up only one or plural items out of the address, instruction code, I/O number, etc., of a monitoring program as specified information, and setting up a program module number for a subroutine or the like within the range of the specified information. CONSTITUTION:Coincidence between the program module number of a program module being controlled by a programmable controller 1 which is stored in a number storing means 22 and a previously set module number is detected by a number coincidence detecting means 24. A read permission control means permits the read of data from a buffer based upon the detected result. Consequently, only the program module requiring trace display can be displayed and the operation state of each program module can be monitored.</p> |
