Posted 21 May 2019 Hello! I wrote a ladder program where I use PRV function for reading current position from rotary encoder. My issue is I received data on PRV only when Oringin_Search is on, I want to read value without Origin_Search active. I tried with High speed counter but I don't receive values. I used port's 0,1, 3 because I have three servomotors with encoders. I have CJ2M CPU and MD211 Module. Share this post Link to post Share on other sites
Posted 22 May 2019 (edited) There are only two high speed counters available for each MD211 module. Right hand MD211 uses counters 0 and 1, left hand MD211 uses counters 2 and 3. To read the present value for each counter the Port Specifier of the PRV(881) instruction is #0010, #0011, #0012 and #0013 and the Control Data is #0000. You must configure the type of counter in the PLC Setup, then download the setup to the PLC. THEN MOST IMPORTANTLY POWER CYCLE THE PLC FOR THE NEW SETTINGS TO TAKE EFFECT. Attached is link for MD211 module manual. See Section 7 for details on high-speed counters and 2-3-3 for PLC Setup https://assets.omron.eu/downloads/manual/en/v3/w486_cj2m-md21_pulse_i_o_module_users_manual_en.pdf Edited 22 May 2019 by BITS N BYTES Share this post Link to post Share on other sites
