4. Counter data acquisition commands for internal RAM
4-1. About counter data acquisition commands
These commands help you to store the count data changing from moment to moment.
There are two timings of storing counter data, one is through GATE signal, the other is internal TIMER.
As the following figure shows, the data which increased input pulse in count time are stored sequentially
in memory.
(GATE MODE)
Counts while GATE signal is H, and count data is stored on the memory (*) at falling edge.
START(COMM)
COUNTING TIME（over 1ms）
SUSPENDING TIME(over 200ns）
GATE（TTL IN)
COUNTING
COUNTING
COUNTING
COUNTING
or TIMER(INTERNAL)
LATCH DATA(INTERNAL)
MEMORY SAVE(INTERNAL)
SAVE TIME
SAVE TIME
SAVE TIME
Counter start
To meet the condition of SAVE TIME >= 1ms,
please input COUNTING TIME + SUSPENDING TIME >= 1ms.
(GATE EDGE MODE)
Count data is stored on the memory (*) at the falling edge of GATE signal.
Counter starts at the first falling edge of GATE signal after STRT command.And the Counter
continues to count, even if GATE signal is "L".
START(COMM)
”Ｈ”time
”Ｌ”time
GATE（TTL IN)
COUNTING
COUNTING
COUNTING
or TIMER(INTERNAL)
LATCH DATA(INTERNAL)
Counter start
MEMORY SAVE(INTERNAL)
SAVE TIME
SAVE TIME
To meet the condition of SAVE TIME >= 1ms,
please input "H" TIME + "L" TIME >= 1ms.
(*) Internal memory size is about 5MB. Therefore, numbers of channels differ depending on the model of
a counter, and the numbers of data which can be saved differ.
ＣＴ０８－ＥＲ２：３００００、 ＣＴ１６－ＥＲ２：１５０００
4-2. Preparation for data acquisition commands
Data are stored on memory(Address:0～１４９９９ or 2９９９９）
You can set up acquisition starting data address and end.
Data acquisition stops automatically if current data address reach the acquisition end data address.
You can read current data acquisition address.
SAVE TIME
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