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Force Multiple Coils (Function Code=15) Request This command is writing the contents of a series of 10 discrete coils from #20 to #29 11 0F 0013 000A 02 CD01 BF0B 11: The Slave Address
(11 hex = address17 ) The more significant bits contain the higher coil variables. This shows that coil 20 is on (1) and 21 is off (0). Due to the number of coils requested, the last data field01 contains the status of only 2 coils. The unused bits in the last data byte are filled in with zeroes. Response 11 0F 0013 000A 2699 11: The Slave Address
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