
210
of 216
8.7 External actuation of a sensor test
You can use the "IN_STEST" signal to run the "sensor test" configured in the DIGIFORCE
®
9311. In this
test, you can check the sensor signals from measurement channels X and Y against a stored value
including any tolerance that has been set.
Diagram 104:
External actuation of a sensor test
*You can define a configurable PLC output for the signal "OUT_OK_STEST".
Cycle
a. The PLC first checks whether the instrument is ready, i.e. if "OUT_READY" = 1.
b. The PLC initiates the sensor test with "IN_STEST" = 1.
c. The DIGIFORCE
®
9311 then resets "OUT_READY" to 0.
d. The DIGIFORCE
®
9311 updates the result of the sensor test:
"OUT_OK_STEST" = 0
sensor test = NOK
"OUT_OK_STEST" = 1
sensor test = OK
e. On detecting "OUT_READY" = 0, the PLC can set "IN_STEST" to 0 to stop the
process.
f. Once the process has finished, the DIGIFORCE
®
9311 sets "OUT_READY" = 1 (in
standby). The PLC can now evaluate the "OUT_OK_STEST" result.
Содержание DIGIFORCE 9311
Страница 3: ...3of 216...