IAI America REXT - Manual (Page 158)


Part 1 Specification
Chapter 3 Gateway R unit
134
Part 1 Specification
[6] Monitor alarm information – Axis (1)
z Query
Field name
RTU mode data
(8 bits)
Data length
(bytes)
Remarks
Header None -
Slave address 3F H 1 Fixed.
Function code 03 H 1
Starting address (upper) F7 H
Starting address (lower) 12 H
2 Alarm address of axis (1)
Number of registers (upper) 00 H
Number of registers (lower) 01 H
2 Number of registers (1 register = 1 word): 2
Error check (CRC)
Based on
calculation result
2 (12 A5)
Trailer None -
Total bytes 8
z Response
Field name
RTU mode data
(8 bits)
Data length
(bytes)
Remarks
Header None -
Slave address 3F H 1 Fixed.
Function code 03 H 1
Data bytes 02 H 1 1-word register x 1 = 2 bytes
Data 1 (upper) Arbitrary
Data 1 (lower) Arbitrary
1 each for upper
and lower words
2
Error check (CRC)
Based on
calculation result
2
Trailer None -
Total bytes
z Actual Example
„ Sent Query: 3F03F762000112A5
„ Received Response: 3F030200009181
(Explanation Alarm code is 0000H. Accordingly, no alarm has generated.
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