Roland R1000 Series Manual page 70

Communication with the PLC
6.3.2 External single measurement via process channel
IN / BIN
Measurement start
BOUT
Function result
BOUT
Function fault
BOUT
Ready
OUT warning
(0-sheet, 1-sheet, 2-sheet)
BOUT warning
(0-sheet, 1-sheet, 2-sheet)
Fig. 28: Start single measurement via process channel
1)
In case of "Function fault" = 1 "Function result" will sometimes remain at 0.
Waiting for "Function fault"
In case of "Function fault":
• Pause 100 ms
• Set "Measurement start" to LOW
• Reset "Function fault"
Explanation:
• If a fault occurs when initiating the function (for instance a previous function is still active)
then only the "Function fault" is displayed. The "Function result" will not be displayed. The
other outputs remain in their current status.
• If the fault occurs during execution, the "Function fault" is displayed. The "Function result" will
not be displayed (if the fault is connected to the function). The outputs remain in their current
status.
• If the fault occurs after the result, for instance, by a faulty operation then this has no
influence on the "Function result".
• If the "Measurement start" cycle is shorter than the duration of the function then the
"Function result" will not be displayed. However, the function is nevertheless executed! For
safety reason the control should not be executed in this fashion!
• If the "Measurement start" cycle is longer than the duration of the function then the "Function
result" will be displayed as shown in the timing diagram.
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70
Double Sheet Detector R1000-series I20
with integrated fieldbus interface
1)
< 15 ms
Set "Measurement start" to HIGH
Faults which are not critical can be deleted via the process channel with
Note
the "Reset function fault" command.
The measured timing periods were determined with12 Mbit-Profibus.
Note
These timing periods can vary with different transmission rates and bus
systems. The cycle time of the PLC has not been taken into account.
Manual
"1" in case of fault
"0" in case of fault
„0" active
„0" active
< 15 ms
or Waiting for "Function result"
In case of "Function result":
• Analyze
• Set "Measurement start" to LOW
B0060191 / Rev. 1.7