Hitachi EH-D6EAN - High Speed Counter

Chapter 3 Programming
3 – 54
3.17 High speed counter
DC inputs of MICRO-EHV+ are configurable for 32-bit high speed counters.
Each channel has two preset values set by special function block. If the counter value exceeds the preset value, then
event task will be executed immediately, which leads POU (FUNCTION) under the task called accordingly. Desired
program can be written in this FUNCTION.
Available I/O addresses of high speed counter and interrupt input are listed as below.
bit 0
%IX7.0
bit 1
%IX7.1
bit 2
%IX7.2
bit 3
%IX7.3
bit 4
%IX7.4
bit 5
%IX7.5
bit 6
%IX7.6
bit 7
%IX7.7
bit 8
%IX6.0
bit 9
%IX6.1
Single phase
ch.1
ch.2
ch.3
ch.4
ch.5
2-phase
ch.1-A
ch.1-B
ch.1-Z
ch.3-A
ch.3-B
ch.3-Z
Interrupt
ch.1
ch.2
ch.3
ch.4
ch.5
Since the same input addresses are shared by single and 2-phase counters, available combinations of 2-phase and
single counter are shown as below.
2-phase counter
Single counter
Interrupt input
2 (ch.1, 3)
1 (ch.5)
5 (ch.1,2,3,4,5) [3 (ch.1,3,5)]*
1 (ch.1)
3 (ch.3,4,5)
5 (ch.1,2,3,4,5) [4 (ch.1,2,3,5)]*
1 (ch.3)
3 (ch.1,2,5)
5 (ch.1,2,3,4,5) [4 (ch.1,3,4,5)]*
0
5 (ch.1,2,3,4,5)
5 (ch.1,2,3,4,5)
* In case marker input is enabled