IDEC WindO/I-NV4 User Manual

WindO/I-NV4 User’s Manual 20-61
6 Important Notes
20
Script
This section describes important notes when defining a script.
6.1 Important Notes Regarding the While Definition
■ Define so it will not go into an infinite loop.
The execution expression is repeatedly executed while the conditional expression is satisfied.
However, it will go into an infinite loop when the conditional expression is satisfied continually.
In the conditional expression of the while definition, it states to exit the loop when the value of LDR100 turns 0. However, the
value stored in the LDR100 is not changed after storing 10 in the first line of the script, so it will go into an infinite loop.
When using the while definition, define it so it will not go into an infinite loop.
The value of LDR100 will become 0 when the while definition is repeated 10 times in the next example, and it will get
out of the while definition.
■ Define it so it will not continue the process for longer than the time limit.
When the processing of a single script continues for more than the time limit due to a while definition, etc., an
execution time over error occurs and that script will be halted. Define the script so the execution time for one script
does not exceed 3,000 milliseconds.
For details, refer to “1.4 Script Error” on page 20-4.
■ Do not write into the external device address.
When it is written into an external device address in the while definition, a script error will occur.
6.2 Important Notes Regarding the Data Type Designations
■ Do not set a Data Type Designations in the braces "{}" for the Data Type Designations.
The maximum number of the hierarchy for the Data Type Designations is one.
An error occurs when the Data Type Designations is set in the braces "{}" for the Data Type Designations.
6.3 Regarding Communication Error
If the external device address is used for the Global Script or the Script Command that configured to the displayed
screens, unless the target device is connected, a communication error will occur even if the Trigger Condition is not
satisfied.
6 Important Notes
HG3G HG2G-5FHG5G-V HG4G-V HG3G-V HG2G-V HG2G-5T HG4G HG1G HG1P HG2J-7U
[LDR 100] = 10;
while (0 != [LDR 100])
{
[LDR 200] = [LDR 200] + 1;
}
[LDR 100] = 10;
while (0 != [LDR 100])
{
[LDR 200] = [LDR 200] + 1;
[LDR 100] = [LDR 100] - 1;
}

IDEC WindO/I-NV4 Specifications

General

Brand	IDEC
Model	WindO/I-NV4
Category	Organizer
Language	English