2-8
Section
Data Computation Standards
146
2-8
Data Computation Standards
The degree of error and performance in pulse outputs and synchronized pulse
control are described in this section.
2-8-1 Pulse Outputs
There will be a delay before a change in the frequency during pulse output is
actually applied to the output, as shown below.
Pulse output
Frequency
changed
Delay
Maximum delay (ms) = One period of the current pulse output
2 + 10 + instruction execution time
There will be an error between the frequency of the output pulse and the set fre-
quency of less than
±
1% due to internal processing error.
2-8-2 Synchronized Pulse Control
The following diagram shows the delay that will occur between starting synchro-
nized pulse control and the start of actual pulse output.
Pulse output
Delay
Maximum delay (ms) = One period of the pulse input x 2 + 16.25
Pulse input
There will be a delay before a change in the frequency during pulse output is
actually applied to the output when performing synchronized pulse control, as
shown below.
Delay
Maximum delay (ms) = One period of the current pulse output
2 + 10
Pulse output
Pulse input
The following diagram shows the delay that will occur between stopping syn-
chronized pulse control (0 Hz) and the end of actual pulse output during synchro-
nized pulse control.
Pulse output
Maximum delay (ms) = Setting in DM 6642 (see below) + One period of the current pulse output
B
2 + 10
Pulse input
Delay
Setting of
DM 6642 bits 08 to 15
Frequency range
Delay
02
10 to 500 Hz
262 ms
03
20 Hz to 1 kHz
66 ms
04
300 Hz to 20 kHz
4 ms
Delays in Frequency
Changes
Frequency Error
Delay in Start of Pulse
Output
Delays in Frequency
Changes
Delay in Stop of Pulse
Output
