Chapter 6 Applied Instructions 8. Use the SM686 flag to reset the value in D to 0. Refer to the examples below for details. Example When you use the instruction with an analog signal output, it acts to cushion the starting and stopping of the machinery. 1. During execution, when M0 switches to OFF, the execution of the instruction stops. When M0 switches to ON again, SM687 is OFF, D12 is reset to the setting value in D10, D13 is reset to 0, and the ramp calculation is restarted. 2. During execution, SM686 is OFF, and when D12 reaches the setting value in D11, SM687 switches to ON as a scan cycle. When D12 resets to the setting value in D10, D13 resets to 0.
D11 D12 D10 D12 D11 D10 D10 D10>D11 The number of scan cycle is n. The number of scan cycle is n. 6_ The number of scan cycle is stored in D13. 3. When SM686 is ON, and D12 reaches the setting value in D11, the value in D12 is not reset to 0, and SM687 is ON. As long as the conditional contact is closed (ON), the value in D12 resets to 0 and SM687 is OFF. When SM686 is ON or OFF, the value in D12 changes as shown below. 6-187 SM 68 6=O N SM 686 =O FF X0M .00 X0.M 00 T he si gna l i s en abl ed. The sig nal is enab led . D 11 D 11 D 12 D 12 D 10 D 10 S M6 87 S M6 87 X0M .00