Honeywell UDA2182 User Manual page 38

Parameters accessible with Function Codes 03 and 10h
Example
Read Analog Variables 1 and 2 from UDA at slave address 01 using Function Code 03.
TCP:
00 03 00
RTU:
01 03 00
Response from UDA where Analog Variable 1 = 100.0 and Analog Variable 2 = 55.32
TCP:
00 03 08
RTU:
01 03 08
30
00 00 04
00 00 04 CRC
42 C8 00 00
42 C8 00 00
UDA2182 Communications User Guide
CRC
42 5D 47 AE
42 5D 47 AE CRC CRC
January 09