| 摘要 |
PURPOSE:To make it possible to make a connection to a substitute output terminal, provided to an output circuit, by changing only by changing set values of an address setter. CONSTITUTION:The input-output address of an output terminal which is disabled to be used due to a fault of output unit OU is set to address setter APS and toggle switch SWC is closed. As a result, every time a sequence program using the address of the unusable output terminal as an input-output address is read out, FF1 is selected to write command signals SON and SOF of FF1, and signal EINS outputted from FF1 is read into arithmetic processing part 11 as a signal showing the ON-OFF state of an output element connected to substitute output terminal 22. As a result, the operation can be restarted only by changing the output element, connected to the unusable output terminal, over to substitute output terminal 22 by connecting. |
