Hach Anatel PAT700 User Manual page 155

Modbus Protocol
Address 25-29 (Serial Number) (Format: Strings)
Get the instruments serial number. The serial number consists of 10 bytes of printable
ASCII characters (0x20-0x7E).
Note: Anatel PAT700 currently supports only 4 digit Serial numbers. A register byte value of 0x00 or
word value of 0x0000 indicates the end of the Serial Number.
Address 30-33 (Secondary ID)
Dummy - Place holder.
Address 34-35 (Last Calibration Date) (Format: Date)
Get the instrument's last date of factory or field calibration. The Date & Time range
should be from 01-Jun-2006 to 01-Jan-2100.
Address 36-37 (Calibration Due Date) (Format: Date)
Get the instrument's calibration due date for service calibration. The Date & Time range
should be from 01-Jun-2006 to 01-Jan-2100.
Address 38 (Firmware Version) (Format: 16 Bit Word)
Get the instrument's firmware version number. Reading a decimal value of 100 indicates
firmware version 1.00.
Note: Only major and minor version is applicable.
Address 39 (Hardware Version) (Format: 16 Bit Word)
Get the instrument's hardware version number. Reading a decimal value of 101 indicates
hardware version 1.01.
Address 40-99 - Expansion
Reserved for future expansion.
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