2 Functions of Devices in DVP-PLC 5. The counting modes (normal frequency or double frequency) of C246 (HHSC0) in EH2/SV/EH3/SV2 series MPU can be set up by D1225. The default setting is double frequency mode. 6. The external input contact of reset signal of C246 (HHSC0) in EH2/SV/EH3/SV2 series MPU is disabled by M1264. The external input contact of start signal is disabled by M1265. 7. The internal input contact of reset signal of C246 (HHSC0) in EH2/SV/EH3/SV2 series MPU is disabled by M1272. The internal input contact of start signal is disabled by M1273. 2-phase AB input high-speed counter Example: LD X10 RST C251 X10 LD X11 X11 DCNT C251 K5 LD C251 C251 Y0 OUT Y0 1.
When X10 is On, RST instruction will be executed. The PV in C251 will be cleared to “0” and the output contact will be reset to be Off. 2. In C251, when X11 is On and C251 receives the A-phase signals from X0 and B-phase signals from X1, the PV EH2/SV/EH3/SV2 series MPU. in the counter will count up (plus 1) or count down (minus 1). You can select different counting modes if you use 3. When the counting of C251 reaches SV K5, the contact of C251 will be On. If there are still input signals coming in, the counting will continue. 4. The counting modes (normal frequency, double frequency or 4 times frequency) of C251 (HHSC0) in ES/SA series MPU can be set up by D1022.
The default setting is double frequency mode. 5. C251 in EH2/SV/EH3/SV2 series MPU has external input signals to reset X2 and start X3. 6. The counting modes (normal frequency, double frequency, triple frequency or 4 times frequency) of C251 (HHSC0) in EH2/SV/EH3/SV2 series MPU can be set up by D1225. The default setting is double frequency mode. 7. The external input contact of reset signal of C246 (HHSC0) in EH2/SV/EH3/SV2 series MPU is disabled by M1264. The external input contact of start signal is disabled by M1265. 8. The internal input contact of reset signal of C246 (HHSC0) in EH2/SV/EH3/SV2 series MPU is disabled by M1272.
The internal input contact of start signal is disabled by M1273. DVP-PLC Application Manual 2-30 RST C251 DCNT C251 K5