5 Noncyclical data exchange
18
Sequence of a WRREC-RDREC cycle for transferring data exchange packets
Transfer of query parameters:
ID-SPS, DIR, ID1 to ID5, etc.
WRREC.BUSY = TRUE
Waiting time 0.5 to 2 s
RDREC.BUSY = TRUE
RDREC.DONE = TRUE
WRREC.DONE = TRUE
Validating and accepting of the
response data values
Data structure for incoming
data exchange packets
JUMO IO device
Unpacking and
processing of the
query data
from the data
exchange packet
Transfer of
response data:
Values,
program data,
etc.
IO controller
IO device
WRREC.request
Transfer of the data exchange packet
with query data from the IO controller to the IO device
WRREC.response
RDREC.request
Transfer of the data exchange packet
with response data from the IO device to the IO controller
RDREC.response
Receipt of the
data exchange packet
ID-PLC comparison
incomimg
outgoing
Yes
No
Содержание AQUIS touch P
Страница 2: ......
Страница 4: ...Contents...
Страница 6: ...1 Safety information 6...
Страница 8: ...2 Compatibility and system requirements 8...
Страница 10: ...3 Electrical connection 10...
Страница 46: ...6 Project planning 46...
Страница 48: ...7 Error messages 48...
Страница 49: ...49 8 Annex 8 Annex 8 1 PROFINET certificate...
Страница 50: ...8 Annex 50...
Страница 51: ......