38
Input Types
Section 4-9
The High-speed Counter Unit resets the count value at the rising edge of con-
trol input IN1 and starts counting the number of pulses for a preset sampling
time.
The High-speed Counter Unit in this mode does not have any external output.
4-8-1
Configuration of Sampling Time
Note
The configuration in sampling mode is briefly described below to explain the
functions of the High-speed Counter Unit. In addition to the settings described
in this section, a variety of settings, such as operating mode, input type, and
control condition settings, are required. Refer to
5-4 DM Area Allocation in
Gate, Cumulative Gate, and Sampling Modes
for data area allocation in detail.
Sampling Time
A sampling time can be set within a range of 1 to 9,999 ms.
Set value:
0001 to 9999 ms
Unit:
1 ms
4-9
Input Types
Any one of the following types of inputs can be selected for the High-speed
Counter Unit.
• Offset phase inputs
• Up and down pulse inputs
• Pulse and direction inputs
The High-speed Counter Unit has a function to multiply offset phase inputs by
two or four. The resolution can be increased in proportion to the number of
pulses input from encoders.
Input types are set with bits 00 to 03 of words m+1 and m+2.
Word m+1 is for counter 1 and word m+2 is for counter 2.
Input Type:
Counter 1 Example
The type of input to counter 2 is set with word m+2.
0: x 1
1: x 2
2: x 4
3: Up and down pulses input
4: Pulse and direction input
Offset phase input
Содержание C200H-CT021
Страница 1: ...C200H CT021 High speed Counter Unit Operation Manual Revised December 2000 ...
Страница 2: ...iv ...
Страница 4: ...vi ...