Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual page 163

(4) Registering executional conditioned device test settings
For how to register executional conditioned device test settings, refer to the following manual.
Operating manual for the programming tool used
(a) Multiple executional conditioned device test registrations for the same step number
Multiple executional conditioned device test settings can be registered for one step number.
+
However, if multiple executional conditioned device test settings with same device name and same execution
timing are registered for the same step number, the registration data will be overwritten. (Even though the
same device is specified, if the execution timing differs, two settings can be registered for one step.)
● When setting a word device with a different data type, a device is regarded as the same device.
Ex. When a word device is set in the order of "D100 (16 bit integer)" and then "D100 (Real number (single precision))",
"D100 (Real number (single precision))" is registered.
● When setting a device with a different modification method (such as a bit-specified word device, digit-specified bit device,
or index-modified device), a device is regarded as a different device.
Ex. When a word device is set in the order of "D100.F" and then "D100Z0 (Real number (single precision)), both
devices are registered.
(b) Step to be specified for executional conditioned device test registration
Any step number (0 to step number for the END instruction) in a sequence program can be specified.
Be sure to specify the start step of each instruction.
D0 D10 D20
Devices that executional conditioned device test settings
can be registered for the start step of the + instruction
CHAPTER 3 FUNCTIONS
161
3