Lenze I/O system 1000 - Page 24

Lenze · I/O system 1000 · Reference Manual · DMS 5.0 EN · 09/2016 · TD17 24
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 μs
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 μs
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