\nTo write 3 words (48 bits) to 3 consecutive registers you send the following:\n<\/p>\n
\nByte 0 Modbus Device Address (1 to 247)
\nByte 1 Function Code \/ Message Type (0x10)
\nByte 2 Start Register Number (high byte)
\nByte 3 Start Register Number (low byte)
\nByte 4 Number of registers to write(high byte)
\nByte 5 Number of registers to write (low byte)
\nByte 6 Number of data bytes that follow(3 registers x 2 bytes each = 6)
\nByte 7 Data0
\nByte 8 Data1
\nByte 9 Data2\u200b
\nByte 10 Data\u200b3
\nByte 11 Data4
\nByte 12 Data5
\nByte 13 CRC of bytes 1 to 6 (high byte)
\nByte 14 CRC of bytes 1 to 6 (low byte)\n<\/p>\n
\nThe response:\n<\/p>\n
\nByte 0 Modbus Device Address
\nByte 1 Function Code \/ Message Type (0x10)
\nByte 2 Start Register Number (high byte)
\nByte 3 Start Register Number (low byte)
\nByte 4 The number of registers written (high byte)
\nByte 5 The number of registers written (low byte)
\nByte 6 CRC of bytes 1 to 6 (high byte)
\nByte 7 CRC of bytes 1 to 6 (low byte)<\/p>\n","protected":false},"excerpt":{"rendered":"
Modbus RTU Function 16 'Preset Multiple Registers' To write 3 words (48 bits) to 3 consecutive registers you send the following: Byte 0 Modbus Device Address (1 to 247) Byte 1 Function Code \/ Message Type (0x10) Byte 2 Start Register Number (high byte) Byte 3 Start Register Number (low byte) Byte 4 Number of registers to write(high byte) […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[78],"tags":[],"class_list":["post-1327","post","type-post","status-publish","format-standard","hentry","category-modbus"],"_links":{"self":[{"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/posts\/1327","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/comments?post=1327"}],"version-history":[{"count":3,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/posts\/1327\/revisions"}],"predecessor-version":[{"id":1333,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/posts\/1327\/revisions\/1333"}],"wp:attachment":[{"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/media?parent=1327"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/categories?post=1327"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/tags?post=1327"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}