2. Secondly, a register should be set in the PLC to store the counter value.

3. Then make a label on the touch screen and set the digital display. The corresponding register address should be the same as your PLC. Omron plc counter instruction CNT is a one-way counter and CNTR is a reversible counter. These two counters need to be programmed with count values. The set value is expressed as a 4-digit decimal number ranging from 0 to 9999.