YOKOGAWA STARDOM FCN-500, Engineering Manual

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<5. Function Test>
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TI 34P02K35-02E Jun. 6, 2018-00
5.6.4 Entering and Checking Values of Device Label Variables
After switching Logic Designer to Debug mode and disconnecting I/O, modify the
Status of device label variables to clear IOP and OOP alarms.
Then, enter values for device label variables.
This section describes the procedure below using the following example device label
variables.
Analog input : AI001
Analog output : AO001
Digital input : DI001
Digital output : DO001
● Modifying Status Information
To modify the status information of the device label variable of an analog or digital
input, modify the Status of the variable.
To modify the status information of the device label variable of an analog or digital
output, modify the Status of its read back variable, which has an “_RB” suffix.
SEE ALSO
For details on read back variables with “_RB” suffices, see Section 9.1.3, “_RB and _BOOL Suffix
Variables of Device Label Variables” of Chapter 9, “Advanced Engineering.”
The figure on the left shows the read back variable values displayed in the Watch
window before I/O disconnection.