IAI America REXT - Manual (Page 163)


Part 1 Specification
Chapter 3 Gateway R unit
139
Part 1 Specification
(2) Examples of Queries/Responses
Queries are implemented by changing (writing) a 1-word register and thus the basic pattern is the same with all queries.
The only differences are the starting address and data. The following explanations use axis (0) or axis (12) in the
example.
[1] Write gateway control signals 0, 1
MON (bit 15 of control signal 0) is the only applicable control signal. Always turn this signal ON to enable the
applicable control.
z Query
Field name
RTU mode data
(8 bits)
Data length
(bytes)
Remarks
Header None -
Slave address 3F H 1 Fixed.
Function code 06 H 1
Starting address (upper) F6 H
Starting address (lower) 00 H
2 Address of gateway control signal 0 register
New data (data written) (upper) 80 H
New data (data written) (lower) 00 H
2
Error check (CRC) 16 bits 2 Based on calculation result
Trailer None -
Total bytes 8
z Response
If the data has been changed (written) successfully, the response is the same as the query.
z Actual Example
„ Sent Query: 3F06F6008000DF5C
„ Received Response: 3F06F6008000DF5C
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