60
Process data cycle:
A process data cycle consists of the complete sending of the input and output data. 10 or 32
bytes of input and output data plus 2 bytes of command data are transmitted.
Figure 35: IO-Link transmission sequence
1
The command is passed on to the IO-Link
master by the controller via a bus system.
2
After the synchronization time
t1
, the command is passed on to the BIS M-400-… via IO-Link. The
duration is dependent on the bus system, the master, the cycle time and the current state of the IO-
Link
communication (see problem described above).
3
The processing time begins with the arrival of the command at the M-400-… This is composed of the
time for the command processing
t2
, the time for the actual read operation
t3
and the evaluation time for
the read data
t4
. A flat value of max. 3 ms can be estimated for
t2
and
t4
. The pure read time is calcula-
ted as described
(see chapter 5.18 "Dynamic mode" on page 39)
. Please note: If the data carrier that
is to be read was already detected by the device, the time for data carrier detection is eliminated.
4
The time for pure data carrier processing is shown here.
5
Following another synchronization time
t5
, the first data is passed on to the IO-Link
master with the next
input data cycle. In addition, the AE bit is set in the bit string. The time for this is
t7
= 1 x cycle time.
6
The data is only passed on to the controller via the host bus system. The latency period
t6
is dependent
on the bus system and the IO-Link
master.
7
After the first data arrives at the controller, the toggle bit in the output buffer must be inverted
(see
chapter 9 "Output/input buffer" on page 48)
. In the example, it is assumed that this occurs immedia-
tely and that the transfer to the IO-Link
master happens fast enough that the BIS M-400-… receives the
new data on the next output data cycle.
8
Now, the device places the next and, thus, the last bytes of the read data in the input buffer and inverts
the toggle bit.
9
The controller retrieves the data and deletes the AV bit.
10
The re-updated output buffer is sent to the BIS M-400-…
11
The device ends the read command and deletes the bits in the bit string in the input buffer that belong to
the job.
9
Device Function
BIS M-4 _ _ IO-Link Device
Read/Write Device
Содержание BIS M-4 045 0 07-S4 Series
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Страница 3: ...Technische Beschreibung Betriebsanleitung deutsch BIS M 4_ _ 045 _0_ 07 S4 BIS M 4_ _ 072 _0_ 07 S4...
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Страница 138: ...4 BIS M 4_ _ IO Link 7 43 7 1 43 7 2 44 7 3 45 8 46 9 47 9 1 47 9 2 48 9 3 52 9 4 53 9 5 58 9 6 59 62 62 62 ASCII 63...
Страница 139: ...www balluff com 5 8 UL 3TLJ E227256 IC RSS 1 2 FCC FCC 15 1 2 BIS M 4_ _ IO Link 1 1 1 2 1 BIS M 4_ _ IO Link...
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Страница 156: ...22 4 CRC_16 CRC_16 CRC_16 CRC_16 CRC 23 CRC_16 44 7 2 8 BIS M 4_ _ 045 30 BIS M 4_ _ 072 4 5 4 6 BIS M 4_ _ IO Link...
Страница 180: ...46 IO Link BIS M IO Link 10 BIS M 4_ _ 045 00_ 07 S4 32 BIS M 4_ _ 072 00_ 07 S4 8 BIS M 4_ _ IO Link...
Страница 192: ...58 01hex 02hex 03hex 04hex 05hex 07hex AV 00hex 0Ehex CRC CRC 0Fhex 48 20hex 21hex AV 9 5 9 BIS M 4_ _ IO Link...
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