Omron C200H-CT021, Руководство по эксплуатации

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36
Gate Mode
Section 4-6
Example: Counter Preset
Value 0 BCD
Set value: 1 to 8,388,607
Hexadecimal
Set value: 000001 to 7FFFFF
A maximum of six counter preset values can be changed by transferring data
from the PC, in which case data blocks A to E and T for turning the outputs
ON and OFF must be preset. These data blocks cannot be changed by trans-
ferring data from the PC. The C200HX, C200HG, and C200HE PCs can use
the IOWR instruction to change the data blocks.
Note Refer to SECTION 10 Using IORD and IOWR Instructions for the IOWR
instruction in detail.
4-6 Gate Mode
The High-speed Counter Unit in this mode counts the number of pulses within
a range of –8,388,608 to 8,388,607 while control input IN1 is turned ON. The
count value is reset at the rising edge of control input IN1. An external control
input or an IR bit can be used as the control input.
In this mode, the present counter value will start counting from 0 when control
input IN1 is turned ON and stops counting the present counter value at the
falling edge of IN1. The count value will be kept on hold until control input IN1
is ON again.
The High-speed Counter Unit in this mode does not have any external output.
Set to 0.
Pulse input
Control input IN1
Count value
Counting
starts Counting
stops Counting
stops Counting
starts