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Set the upper and lower limits for the frequency set value, i.e., 0≤D40≥K10000.
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M8013 is a 1-second pulse cycle.
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Call the P0 subroutine to execute the CRC verification program for 6 data.
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Run the control common program.
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Use the rising edge to trigger the run control assignment program.
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Forward run control program.
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Reverse run control program.
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Stop run control program.
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Prepare data sending program.
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Start executing RS instruction to send data.
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M8122 is the data sending flag relay, which can only execute the RS instruction when M8122=ON, sending and receiving data. After the data is sent, the M8122 flag will automatically reset.
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Data sending program.
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Note: Do not use pulse rising or falling edges to trigger the RS instruction. It is better to use pulse rising and falling edges to trigger the M8122 data sending flag relay..
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Store the 23 data returned by the inverter into PLC registers D120 to D142’s low 8 bits.
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Correctly read the relevant parameter data control program.
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DMOV D131 D200 Transfer D131 and D132 to D200 and D201 registers.
6.8. CRC Verification Subroutine Description
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Sixteen-bit CRC verification data is stored in D10, divided into two 8-bit data.
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Byte swapping instruction SWAP D57: Swap the high 8 bits and low 8 bits in the D57 register.
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