M-system 47D Series, Справочное руководство

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7 47D Series Modbus Reference Guide EM-9501-C Rev.4
2.4.2 WRITE MULTIPLE REGISTERS
This function code is used to write a block of contiguous registers (settings) in the remote device.
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REQUEST FORMAT
FIELD LENGTH RANGE
(1) Device address 1 byte 1 to 247
(2) Function code 1 byte 16
(3) Starting address 2 bytes 0 to 65535
Address numbered minus 1 from the register described in the
tables in Section 3.
(4) Number of registers 2 bytes 1 to 123
(5) Byte count 1 byte N x 2
N = Number of registers
(6) Register value N x 2 bytes
(7) CRC 2 bytes
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RESPONSE FORMAT
FIELD LENGTH RANGE
(1) Device address 1 byte 1 to 247
(2) Function code 1 byte 16
(3) Starting address 2 bytes 0 to 65535
Address numbered minus 1 from the register described in the
tables in Section 3.
(4) Number of registers 2 bytes 1 to 123
(5) CRC 2 bytes
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REQUEST EXAMPLE
Here is an example of a request to write ‘6600’ (000019C8) at the 2-word register 5604 (15E3) in the device address
1.
01 10 15E3 0002 04 19C80000 C9C0
(1) (2) (3) (4) (5) (6) (7)
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RESPONSE EXAMPLE
01 10 15E3 0002 B432
(1) (2) (3) (4) (5)
The above examples are given in hexadecimal.