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Shenzhen King Pigeon Hi-Tech Co.,LED
Ver 1.2
PLC Data acquisition protocol conversion gateway
-D225
From the Mitsubishi programming software query to compare the data of D0 and Y0 with the data
collected by Modbus Poll, it is found that the data is consistent and there is no problem.
5.1.3.5
Description of the message format for collecting
Mitsubishi FX3U data
Take the data of Y0-Y7 as an example, the mapping address of D225 device: 5000-5007, the number
of collection: 8
Modbus Poll: Data sent TX: 07 9C 00 00 00 06 01 01 13 88 00 08
07 High bit of transaction identifier
9C transaction processing identifier low
00 High bit of protocol identifier
00 low bit of protocol identifier
00 High byte of the length of the byte following
06 Low byte of the length of the following byte
01 D225 device address
01 Read the function code of the register
13 High bit of start address
88 Low bit of start address
00 The high number of acquisitions
08 The low number of acquisitions
D225 device returns data RX: 07 9C 00 00 00 04 01 01 01 01
07 High bit of transaction identifier
9C transaction processing identifier low
00 High bit of protocol identifier
