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94
Computing the Cycle Time
Section 2-7
Conditions
Calculation Example
2-7-6
Online Editing Cycle Time Extension
When online editing is executed to change the program from the CX-Program-
mer while the CPU Unit is operating in MONITOR mode, the CPU Unit will
momentarily suspend operation while the program is being changed. The
period of time that the cycle time is extended is determined by the following
conditions.
• Number of steps changed
• Editing operations (insert/delete/overwrite)
• Types of instructions
The cycle time extension for online editing is negligibly affected by the size of
task programs. If the maximum program size for a task is 10 Ksteps, the
online editing cycle time extension will be as follows:
When editing online, the cycle time will be extended by according to the edit-
ing that is performed. Be sure that the additional time will not adversely affect
system operation.
Note
When there is one task, online editing is processed all in the cycle time follow-
ing the cycle in which online editing is executed (written). When there are mul-
tiple tasks (cyclic tasks and interrupt tasks), online editing is separated, so
that for n tasks, processing is executed over n to n
×
2 cycles max.
Item
Details
CP1L
CP1W-40EDR
40-pt I/O Unit
1 Unit
User program
5 K steps
LD instructions: 2.5 Ksteps,
OUT instructions: 2.5 Ksteps
USB port connection
Yes and no
Fixed cycle time processing
No
Serial port connection
No
Other peripheral servicing
No
Process name
Calculation
Processing time
USB port
connected
USB port not
connected
(1) Overseeing
---
0.4 ms
0.4 ms
(2) Program execution
0.55
µ
s
×
2,500 + 1.1
µ
s
×
2,500
4.1 ms
4.1 ms
(3) Cycle time calculation (Minimum cycle time not
set)
0 ms
0 ms
(4) I/O refreshing
0.39 ms
0.39 ms
0.39 ms
(5) Peripheral servicing
(Only USB port con-
nected)
0.1 ms
0 ms
Cycle time
(1) + (2) + (3) + (4) + (5)
4.99 ms
4.89 ms
CPU Unit
Increase in cycle time for online editing
CP1L CPU Unit
Maximum: 16 ms, Normal: 12 ms
(for a program size of 10 Ksteps)
Содержание CP1L CPU UNIT - 03-2009
Страница 1: ...Cat No W462 E1 06 CP1L CPU Unit SYSMAC CP Series CP1L L_0D_ CP1L M_0D_ OPERATION MANUAL...
Страница 2: ......
Страница 4: ...iv...
Страница 10: ...x...
Страница 22: ...xxii...
Страница 34: ...xxxiv Conformance to EC Directives 6...
Страница 70: ...36 Function Blocks Section 1 5...
Страница 584: ...550 Trouble Shooting Section 8 7...
Страница 627: ...593 Sample Application Section 9 12 Network Settings Network Tab Network Settings Driver Tab...
Страница 630: ...596 Sample Application Section 9 12...
Страница 654: ...620 Troubleshooting Unit Errors Section 11 4...
Страница 662: ...628 Replacing User serviceable Parts Section 12 2...
Страница 668: ...634 Standard Models Appendix A...
Страница 698: ...664 Auxiliary Area Allocations by Function Appendix C...
Страница 746: ...712 Auxiliary Area Allocations by Address Appendix D...
Страница 773: ...739 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 774: ...740 Connections to Serial Communications Option Boards Appendix F...
Страница 806: ...772 Index...
Страница 808: ...774 Revision History...