313
Appendix A
Performance Characteristics
This section explains the internal processing of the CS1W-NC
j
13 Position Control Unit, so it can be used as a
reference. The performance values shown in this section are the measurements results obtained under the follow-
ing conditions.
PC: CS1H-CPU67 (with no Expansion or Remote Racks)
Position Control Unit: Only one Unit is mounted on the CPU Rack.
Note
The performance values shown in this section will vary depending on conditions such as the configuration
and settings of the PC, the user program, and other mounted Units, so use these values for reference only.
Speeds
Due to internal processing, the following difference occurs between the value set as the speed (frequency) and the
value actually output from the Unit.
Actual speed (pps) =
16,000,000
Round
16,000,000
Set value
Note
The actual speed is obtained within an error
range of
±
0.02%.
Note
Round: Function for rounding the value.
Round
16,000,000
Set value
: Divider ratio
pps: Pulses per second
Pulse output (actual speed)
16 MHz
Pulse output
LSI divider
±
0.02%
This difference occurs because a 16-MHz source clock is divided by the pulse output LSI divider. An error of
±
0.02% also occurs because the source clock is affected by factors such as the temperature. However, this does
not affect the positioning accuracy.
Set value (pps)
Actual speed (pps)
500,000
500,000.00
250,000
250,000.00
180,000
179,775.28
140,000
140,350.88
95,000
95,238.10
3,500
3,500.33
92
92.00
Note
An additional error of
±
0.02% max. occurs in the actual speed.
Power Up Time
When the Position Control Unit is powered up or restarted, the time required for the Unit to complete its initial pro-
cessing and be ready to recognize the START command is approximately 240 to 300 ms.
Reset
Busy Flag
Restart completed (Unit reset released)
Unit’s initial processing
Summary of Contents for CS1W-NC113 - REV 02-2008
Page 1: ...CS1W NC113 213 413 133 233 433 Position Control Units ...
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