MELSEC-A
9. SELECTING AND EXECUTING THE COUNTER FUNCTION
9 - 3
9.1.1 Reading the counter function selection count value
The counter function selection count value is the count value at a time when a counter
function selection is made.
This section describes how to read the counter function selection count value.
(1) The counter function selection count values are stored in the following remote
registers.
Description
Latch Count Value/
Sampling Count Value/Periodic
Pulse Count Previous Value
Periodic Pulse Count
Present Value
Remote
register
CH1 RWrn+2 to 3 RWrn+4 to 5
CH2 RWrn+A to B RWrn+C to D
(2) The counter function selection count value (0 to 16777215) is stored in 24-bit
binary.
(3) In up count, the counter function selection count value returns to 0 when it
exceeds 1677715.
In down count, the counter function selection count value returns to 1677715
when it exceeds 0.
POINT
The latch count value, sampling count value and periodic pulse count previous
value are stored in the same address but the value stored is the count value
selected.
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