68
Performance Specifications of Drum Function
Section 7-1
7-1
Performance Specifications of Drum Function
Refer to the following for the performance specifications of the drum function.
Note
The number of response speed data blocks is the total number of response
speed data blocks that can be set with counters 1 and 2.
!Caution
In circular mode, when performing reset or overwriting the present counter
value with 0, stop the counter first. If the counter is not stopped, preset opera-
tion at the maximum value may not be performed correctly.
7-2
DM Area Settings and Functions
Values can be written to the DM area with ladder programs or the Program-
ming Console.
m = 1000 + 100 x Unit No. (0 to 15)
The values set in the DM area will be transferred to the High-speed Counter
Unit when the High-speed Counter Unit is turned ON or restarted. Any set
value changed while the High-speed Counter Unit is in operation will be trans-
ferred to the High-speed Counter Unit when it is turned ON again or restarted.
Note
1.
The present counter value and upper and lower limits can be changed
even when the Unit is operating. Refer to
7-5 Data Transfer Programs
.
2.
The present counter value and upper and lower limits can be changed with
the C200HX, C200HG, or C200HE PC by using the IOWR instruction. Re-
fer to
SECTION 10 Using IORD and IOWR Instructions
.
Description
In this manual, the words and bits of counter 1 are described first followed by
the words and bits of counter 2.
In the following example, word m+1 bit 04 is for counter 1 and word m+2 bit 05
is for counter 2.
Example:
Counter input type (Word (m+1) or (m+2) bits 03 to 00)
Counter reset (Word n bits 04 or 05)
Item
Specification
Count input signal
Offset phase input
Counter input A (A phase of encoder)
Counter input B (B phase of encoder)
Up and down pulse input
Counter input A (Down pulse input)
Counter input B (Up pulse input)
Pulse and direction input
Counter input A (Direction input)
Counter input B (Pulse input)
External input signal
Counter input Z (Counter reset signal)
External control input (Control input IN2 is not used.)
Count range
Linear mode: –8,388,608 to 8,388,607
Circular mode: 0 to 65,535
(Values can be specified in hexadecimal.)
Multiplication function
x1, x2, x 4 (for offset phase inputs only)
Set data
Set data: Lower limit, upper limit, 8 external/internal outputs, and 8
internal outputs
No. of data blocks: 16
Response speed (in linear and circular modes)
(Count input to external output)
Set data
BCD
Hexadecimal
1 to 16 blocks of data
1.2 ms max.
1.0 ms max.
Summary of Contents for C200H-CT021
Page 1: ...C200H CT021 High speed Counter Unit Operation Manual Revised December 2000 ...
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