Minebea Sartorius Intec Maxxis 4 PR 5500, Инструкция по эксплуатации инструмента

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ModBus Protocol PR 5500 Instrument Manual
EN-426 Sartorius
Function 8: Diagnosis
Command Function
number Sub-function Any value
1 byte 2 bytes 2 bytes
Value range 8 0
This function is intended for testing the communication.
Only sub-function 0 is supported.
The received command is sent as a reply.
Reply Function
number Sub-function Value of the
command
1 byte 2 bytes 2 bytes
Function 15: write n successive bits
Command Function
number Address of 1st
bit Number of
bits Number of
bytes Value of bits
1 byte 2 bytes 2 bytes 1 byte n bytes
Value range 15 0 to 127 8, 16, 24 1, 2, 3…
1st Byte 2nd byte 3rd byte - - - - - - - - Last byte
8th to 1st bit Last bit
The bit address must always be the 1st bit of a byte. The number of bits to be read must not be smaller than 8
and must be a multiple of 8. The number of bits is limited by the telegram to 2008 bits (251 bytes). If there are
more than 2008 bits, then an error telegram is sent as a reply.
Reply Function
number Address of 1st
bit Number of
bits
1 byte 2 bytes 2 bytes
Example of function 15 with ModBus-RTU:
Command 1 15 0 64 0 8 1 3 CRC CRC
Reply 1 15 0 64 0 8 CRC CRC
Example with ModBus-TCP:
Command 47 14 0 0 0 8 0 15 0 64 0 8 1 3
Reply 47 14 0 0 0 6 0 15 0 64 0 8
The individual bytes are shown.