2 Functions of Devices in DVP-PLC Counting up Counting down Contact X11, M1241 X10 X12 X0 PV in C241 6 7 6 5 4 3 0 1 2 3 4 5 0 Contact Y0, C241 Example: 1-phase 2 inputs high-speed counter LD X10 RST C246 C246 RST X10 LD X11 X11 DCNT C246 K5 C246 DCNT LD C246 Y0 OUT Y0 1. When X10 is On, RST instruction will be executed. The PV in C246 will be cleared to “0” and the output contact will be reset to be Off. X11 2. In C246, when X11 is On and C246 receives X1 Counting up X0 the signals from X0, the PV in the counter will Counting down count up (plus 1) or count down (minus 1). 6 7 6 5 4 3 3. When the counting of C246 reaches SV K5, PV in C246 0 1 2 3 4 5 the contact of C246 will be On.
If there are still input signals from X0, the counting will 0 continue. 4. C246 in EH2/SV/EH3/SV2 series MPU has Contact Y0, C246 external input signals to reset X2 and start X3. DVP-PLC Application Manual 2-29 C246 K5 10