Omron CS1W-213 - REV 02-2008, Operation Manual

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Appendix A
Performance Characteristics
This section explains the internal processing of the CS1W-NC
@
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 fol-
lowing conditions.
PLC: 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 configura-
tion and settings of the PLC, the user program, and other mounted Units, so use these values for refer-
ence 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.
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.
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
processing and be ready to recognize the START command is approximately 240 to 300 ms.
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%
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
Reset
Busy Flag
Restart completed (Unit reset released)
Unit's initial processing