Mitsubishi Electric MELSEC iQ-R Series - Process Control Function Processing Time

APPX
Appendix 7 Processing Time
721
A
When the file format is binary file
■When a global device is specified
The following table lists the collection intervals at which data can be collected under the following conditions.
• Scan time = 1.5ms (up to 3ms)
*1
• Internal buffer capacity setting = 128K bytes per setting (default setting)
• Collection setting = Time specification (data collection at time interval)
• Data setting = Data register (D) (Data-type: word-signed (decimal number type))
• Output setting = Day/time column (output format is default) and index column are outputted.
• Save setting = 10000 records, operation when the number of saved files exceeded: overwriting
• Functions that require access to files in the SD memory card except for the data logging function must be not active.
• For the parameters, use the default setting values.
*1 3ms (to 4.5ms) for redundant mode
Process control function processing time
The process control function processing time is the time required to process the control loop when the process control
function is executed. The following table lists the processing time of some control loop examples.
For the processing time of each process control instruction, refer to the following.
 MELSEC iQ-R Programming Manual (Process Control Function Blocks/Instructions)
Number of points Collection interval at which data can be collected
NZ1MEM-2GBSD NZ1MEM-4/8/16GBSD
8 points (8 points  1 setting) 1.0ms 1.0ms
16 points (16 points  1 setting) 1.0ms 2.0ms
64 points (64 points  1 setting) 2.0ms 5.0ms
128 points (128 points  1 setting) 4.0ms 7.0ms
256 points (128 points  2 setting) 7.0ms 13.0ms
1280 points (128 points  10 setting) 24.0ms 26.0ms
Loop type Configuration Processing time
Two-degree-of-freedom PID control
(S2PID)
S.IN, S.PHPL, S.2PID, and S.OUT1 instructions 160s
PID control (SPID) S.IN, S.PHPL, S.PID, and S.OUT1 instructions 151s
Monitor (SMON) S.IN and S.PHPL instructions 73s