APPX
Appendix 7 Processing Time
725
A
■Waiting time for completion of the previous tracking data reflection (Twr)
The following describes the waiting time (Twr) for completion of the previous tracking data reflection in the CPU module of the
control system.
Twr = 1 + Tdrm - Toth [ms]
• Tdrm: Maximum time taken for reflection of tracking data in the CPU module of the standby system
• Toth: Scan time excluding Ts (Increase in the scan time) in the CPU module of the control system
Tdrm is determined as follows.
• When no extended SRAM cassette is inserted: 1 + (No. of tracking blocks 300.0 10
-6
) + (Total size of tracking data
[word] 45.0 10
-6
)
• When an extended SRAM cassette is inserted: 1 + (No. of tracking blocks 300.0 10
-6
) + (Total size of tracking data
[word] 106.0 10
-6
)
If Tdrm - Toth is smaller than 0, Twr is handled as 1.
Twr is not generated in the first scan in which the tracking transfer is started.
■Tracking data send time (Tst)
The following describes the tracking data send time (Tst) in the CPU module of the control system. The calculation method
differs depending on whether an extended SRAM cassette is inserted or not.
• D1: Size [word] of tracking data in the system data, signal flow memory, refresh data register (RD), and module label
(extension base unit)
• D2: Size [word] of tracking data of global devices, local devices, global labels, and local labels
• D3: Number of tracking transfer settings of global devices
• D4: Size [word] of tracking data in the system data, signal flow memory, and refresh data register (RD)
• D5: Size [word] of tracking data of global devices, local devices, global labels, and local labels
• D6: Number of tracking transfer settings of global devices
• D7: Total size [word] of tracking data in the system data, signal flow memory, local devices, global labels, local labels, and
global devices
• E1: Additional time when the SFC program is used = 3.5[ms] (Only when the SFC program is used)
• F1: Additional time when the PID control instruction is used = 0.02[ms] (Only when the PID control instruction is used)
D1 is determined as follows.
*1 The CC-Link module that was set with the parameter is the target.
*2 This applies when the tracking device/label setting for the redundant settings of the CPU parameter is set to "Transfer collectively"
(default) or when the tracking device/label setting is set to "Detailed setting" and "Module Label (Extension) Setting" is set to "Transfer".
Extended SRAM cassette inserting status Tracking data send time
Not inserted 0.5 + (26.7 10
-6
) D1 + (43.5 10
-6
) D2 + (1.5 10
-3
) D3 + E1 + F1[ms]
Inserted 0.5 + (26.7 10
-6
) D1 + (113.5 10
-6
) D2 + (1.5 10
-3
) D3 + E1 + F1[ms]
Item Size
System data ■Fixed data
• In configuration with the main base unit only: 8225
• In redundant system with redundant extension base unit: 16361
■Data that varies depending on the tracking device/label setting
16 (No. of tracking settings of T, ST, C, and LC) + 8 (No. of global device tracking settings of other devices)
■Data that varies depending on the number of CC-Link modules mounted on the extension base unit
*1
3131 (Number of CC-Link modules mounted on the extension base unit)
■Data that varies depending on the simple CPU communication setting
• When it is set: 68
• When it is not set: 0
Signal flow memory (Total number of steps of control system execution programs, or total number of steps of rising/falling instruction in an
FB)/16
(The digit after the decimal point is round up.)
Refresh data register (RD) Follows the tracking transfer settings. ( Page 395 Tracking transfer setting)
Module label (extension base unit) ■In configuration with the main base unit only
0
■In redundant system with redundant extension base unit
• When transferring the module label of modules on the extension base unit
*2
Number of units to be refreshed to the module label of modules on the extension base unit 1.7KW (fixed value)
• When not transferring the module label of modules on the extension base unit
*3
0
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