Honeywell HC900 - Page 73

Parameters accessible with Function Code 03, 06,10h
Signal Tags
Revision 13 HC900 Process Controller Communications User Guide 65
April 2017
Example
Query: Read Signal Tags 3 and 4 from HC900 at address 1 using Function Code 3 (hex codes).
TCP:
00
03
20
04
00
04
RTU:
01
03
20
04
00
04
CRC
CRC
Response: from HC900 where Signal Tag 3 = 100.0 and Signal Tag 4 = 55.32
TCP:
00
03
08
42
C8
00
00
42
5D
47
AE
RTU:
01
03
08
42
C8
00
00
42
5D
47
AE
CRC
CRC