Bosch Rexroth Tightening System 350 - Page 312

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System 350 | 3 608 878 300/2019-03
Fig. 6–59: Flow chart of a results data request for the extended send range
Status word =
0x0000
Y
es
No
PLC reads status word
PLC writes
control word 0x1100
PLC reads status word
Status word
=
0x1100?
Yes
Read telegram data
PLC writes
control word 0x0000
PLC reads status word
Status word =
0x1100?
Yes
Number
negative?
Yes
End of data output
A
bort old
transmission
Set the defined state
on the field bus
No
No
No
The telegram is requested
from the controller
First telegram has
arrived with
- Length (Header)
- Number (Header)
- Results data
Check for last
telegram
At the time of the rst telegram request by the PLC, a complete picture is made of the current content of the congured
data eld bus send range. This picture is always transmitted to “[..]CyCmp” asynchronously and independently.
OK/NOK evaluation
and “[..]CyCmp”