4 checking user program – Toshiba SX 2000 User Manual

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6.4 Checking user program

Check the program based on the following points if it is running but the operation
does not work as intended.

(1)

Output is not carried on the same coil or register or variable of two or more

locations during one scanning; the devices or variables for coil instructions and

for function instructions are not overlapping.

(2) The signal which changes faster than the scanning cycle is not input.

(3) The instance name as time/counter instruction is not duplicated.

(4)

When an interrupt is used, the device/register which is used in the main program

is not operated erroneously in the interrupt routine.

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