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Pulse Outputs
Section 5-2
Procedure
Make the following settings in the PLC Setup.
Pulse Output 0 to 3
Restrictions
The following restrictions apply when using S-curve acceleration/deceleration.
Starting Frequency
The starting frequency must be 100 Hz or greater. If the starting frequency is
set to less than 100 Hz, it will automatically be increased to 100 Hz if S-curve
acceleration/deceleration is set.
Target Frequency
S-curve acceleration/deceleration will not be performed if the target frequency
is less than 100 Hz.
Precautions when
using the Pulse
Output Function
The CP1L CPU Unit’s pulse output frequency is determined by dividing the
source clock frequency by an integer ratio. (The source clock frequency for
ports 0 and 1 is 20 MHz and the frequency for ports 2 and 3 is 16.4 MHz.)
Consequently, there may be a slight difference between the set frequency and
the actual frequency, and that difference increases as the frequency
increases. The actual frequency can be calculated from the following equa-
tions.
Pulse Output System
Speed Curve
Trapezium
When a pulse output is executed with accelera-
tion/deceleration, this setting determines
whether the acceleration/deceleration rate is lin-
ear (trapezium) or S-shaped.
S-shaped
50 Hz
100 Hz
Automatically
increased
to 100 Hz.
Pulse frequency
Time
50 Hz
No
acceleration/deceleration
Time
Pulse frequency
Frequency
divider
Output pulses (actual frequency)
Integer dividing ratio calculated
from user's set frequency
Source
clock
16.4 MHz
Summary of Contents for CP1L CPU UNIT - 03-2009
Page 1: ...Cat No W462 E1 06 CP1L CPU Unit SYSMAC CP Series CP1L L_0D_ CP1L M_0D_ OPERATION MANUAL...
Page 2: ......
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Conformance to EC Directives 6...
Page 70: ...36 Function Blocks Section 1 5...
Page 584: ...550 Trouble Shooting Section 8 7...
Page 627: ...593 Sample Application Section 9 12 Network Settings Network Tab Network Settings Driver Tab...
Page 630: ...596 Sample Application Section 9 12...
Page 654: ...620 Troubleshooting Unit Errors Section 11 4...
Page 662: ...628 Replacing User serviceable Parts Section 12 2...
Page 668: ...634 Standard Models Appendix A...
Page 698: ...664 Auxiliary Area Allocations by Function Appendix C...
Page 746: ...712 Auxiliary Area Allocations by Address Appendix D...
Page 773: ...739 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 774: ...740 Connections to Serial Communications Option Boards Appendix F...
Page 806: ...772 Index...
Page 808: ...774 Revision History...