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Lenze · I/O system 1000 · Reference Manual · DMS 5.0 EN · 09/2016 · TD17
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2
Product description
2.4
Digital-I/O EPM-S207, EPM-S310 – time stamp function (example)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Executing the time stamp function for the entries 6 ... 8
The states of the time stamp entries 6 ... 8 (RN = 0x06 ... 0x08) are output successively and deleted
from the FIFO memory.
The diagram indicates the status of the outputs at the "t" time.
[2-6]
Time diagram: Execute the time stamp function for the entries 6 ... 8
Writing the last time stamp entry
Since less than five time stamp entries are written, bit 6 of the "running number" (RN) must always
be set for the last time stamp entry. RN = 0x0B becomes 0x4B.
The diagram indicates the status of the outputs at the "t" time.
[2-7]
Time diagram: Write the last time stamp entry
FIFO
Output data
Consecutive number (RN) Ticker value
in
μ
s
Input data
1
0b10110000
0x09
30140
RN_LAST: 0x4A
RN_NEXT: 0xC5
STS_FIFO: 0x00/0x02
NUM_ETS: 0x02
2
0b00110000
0x0A
37330
3
0b00000000
0x00
0
...
0b00000000
0x00
0
31
0b00000000
0x00
0
FIFO
Output data
Consecutive number (RN) Ticker value
in
μ
s
Input data
1
0b10110000
0x09
30140
RN_LAST: 0x4B
RN_NEXT: 0xC9
STS_FIFO: 0x80/0x82
NUM_ETS: 0x03
2
0b00110000
0x0A
37330
3
0b00000000
0x4B
40000
4
0b00000000
0x00
0
...
0b00000000
0x00
0
31
0b00000000
0x00
0