If data sampling cannot occur, for example due to a communication error occurring during sampling, that round of data will be saved in CSV as follows according to the execution condition.
When the Execution Condition is [Set Time] or [Bit ON]
As a read error, "****" or "----" is displayed.
For GP4000 series (except GP-4100 series) and IPC series: "----" (a hyphen is displayed for each display digit)
For other models: "****" (an asterisk is displayed for each display digit)
(For example, Execution Condition = Time Designation, Start Time = 17:00, Sampling Cycle = 30 min., Cycles = 5)
When the Execution Condition is [Constant Cycle], [Constant Cycle when Bit is ON], or [Bit Change]
The read data will appear immediately before a communication error occurs.
(For example, a communication error occurred right after the second sampling round, and the error state continued until right before the third sampling round)
The previous sampling cycle data will remain displayed if the [Sampling Cycle] is shorter than the communication cycle time, or the communication cycle time becomes longer due to a screen change/scroll display occurring and exceeds the [Sampling Cycle], or because sampling is performed before the device/PLC data is read.
When the [Sampling Cycle] is short (1 to 2 seconds, or 100 milliseconds), and a large process occurs such as a screen change, sampling cannot take place at the defined frequency (samples will be missed.) As shown above, the previous data will be used.