Hitachi EH-A14EDR, Руководство по применению

Страница: 114 / 170

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