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Register Map for Process and Operation Type Variables
Time Register Map
50 HC900 Hybrid Controller Communications User Guide Revision 4
9/03
Example
Query: Read Variables 1 and 2 from HC900 at address 1 using Function Code 3 (hex codes).
TCP:
00 03 18 C0 00 04
RTU:
01 03 18 C0 00 04 CRC CRC
Response: from HC900 where Variable 1 = 100.0 and Variable 2 = 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
6.8 Time Register Map
Table 6-8 Time Register Map Addresses
Address
(hex)
Register
(decimal)
Channel Number Access Notes
1DF0 7665 Hours R/W 0 to 23
1DF1 7666 Minutes R/W 0 to 60
1DF2 7667 Seconds R/W 0 to 60
1DF3 7668 Month R/W 1 to 12
1DF4 7669 Day R/W 1 to 31
1DF5 7670 Year R/W 1970 to 2037
The values read are always in the range
of 1970 to 2037 for a write. 0 – 37
represents 2000 – 2037, 70 – 99
represents 1970 – 1999
1DF6 7671 Week Day R 0 to 6 (0 = Sunday)
ATTENTION
Clock registers must be written in a single transaction. They can be written in one transaction of registers 7665
through 7670 or one transaction of registers 7665 through 7671.