Ny-Series Instructions Reference Manual (W560 - Omron NY532-5400 Reference Manual

Precautions for Correct Use
• Execution of this instruction is continued until processing is completed even if the value of Execute
changes to FALSE or the execution time exceeds the task period. The value of Done changes to
TRUE when processing is completed. Use this to confirm normal completion of processing.
• Refer to Using this Section (page 2-3) for a timing chart for Execute, Done, Busy, and Error.
• This instruction will not end in an error even if the Unit specified by UnitProxy is already saving data.
The value of Busy remains at TRUE and the value of Done changes to TRUE when saving the data
is completed. Requests to save data are not queued.
• An error will not occur even if this instruction is executed without writing data to the Unit.
• Some of the Units have restrictions in the number of times that you can write data. Refer to the man-
uals for the specific Units for details.
• For UnitProxy, specify the device variable that is assigned to the EtherCAT Coupler Unit, an NX Unit
on the EtherCAT Coupler Unit, or an NX Unit connected to the NX bus of the CPU Unit in the I/O Map
of the Sysmac Studio. Refer to the Sysmac Studio Version 1 Operation Manual (Cat. No. W504-E1-
07 or later) for details on assigning device variables.
• To write and save data with a Power OFF Retain attribute, execute the NX_SaveParam instruction
after you execute the NX_WriteObj instruction (page 2-970). If you restart the Unit before you exe-
cute the NX_SaveParam instruction, the previous NX object data is restored.
• This instruction is related to NX Message Communications Errors. If too many instructions that are
related to NX Message Communications Errors are executed at the same time, an NX Message
Communications Error will occur. Refer to A-3 Instructions Related to NX Message Communications
Errors for a list of the instructions that are related to NX Message Communications Errors.

NY-series Instructions Reference Manual (W560)

2 Instruction Descriptions
2
2-851