Roland R1000 Series Manual page 41

B0063191 / 1.3
6.3.2 External single measurement via process channel
Fig. 16: Timing diagram for start single measurement via process channel
1)
In case of "Function fault", "Function result" is not necessarily set.
2)
The measuring time depends on the time set for averaging.
In case of "Function fault" then:
- Pause 100 ms
- Unset "Measurement start"
- 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, e.g. 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 reasons the control should not be executed in this style!
• 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.
ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
Start "Measurement start"
"Function fault"
Note Uncritical faults can be deleted via the process channel with the
"Reset function fault" command.
Note
The measured timing periods were determined with12 Mbit/s Profibus.
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
wait until
or "Function result"
In case of "Function result" then:
- Analyse
- Unset "Measurement start"
Communication with the PLC
41