User manual

PAT700 Total Organic Carbon Analyzer – Modbus Protocol Page 149
Anatel Operator Manual
Date
The Date is transmitted similar to a 32-bit Word with the MOST significant byte first, then the
next MOST significant, until all the bytes are transmitted. FC3 reads 16-bit items at a time;
therefore, two registers are required to read each Date data item. Combine the two characters
in the 1st Register to obtain the four digit year.
Example (Decimal): 2007-10-05 (Format in YYYY-MM-DD)
Time (Format 1)
The Time is transmitted similar to a 32-bit Word with the MOST significant byte first, then the
next MOST significant, until all the bytes are transmitted. FC3 reads 16-bit items at a time;
therefore, two registers are required to read each Time data item. The Time is always in 24
Hours Format.
Example (Decimal): 00:15:46:25 (Format in DD:HH:MM:SS)
Time (Format 2)
The Time is transmitted similar to a 32-bit Word with the MOST significant byte first, then the
next MOST significant, until all the bytes are transmitted. FC3 reads 16-bit items at a time;
therefore, two registers are required to read each Time data item. The Time is always in 24
Hours Format.
Example (Decimal): 46:25 (Format in HH:MM)
Date & Time
The Date and Time is transmitted similar to a 32-bit Word with the MOST significant byte first,
then the next MOST significant, until all the bytes are transmitted. FC3 reads 16-bit items at a
time; therefore, two registers are required to read each Date and Time data item. The Time is
always in 24 Hours Format. Combine the two characters in the 1st Register and convert from
Hex to Decimal to obtain the four digit year.
Example (Decimal): 2007-07-28 15:46:25 (Format in YYYY-MM-DD HH:MM:SS)
1st Register 2nd Register
Value (Hex) 1st 2nd 1st 2nd
0x07D70A05 0x07 0xD7 0x0A 0x05
1st Register 2nd Register
Value (Hex) 1st 2nd 1st 2nd
0x000F2E19 0X00 0x0F 0x2E 0X19
Value (Hex) 1st Register 2nd Register
0x2E19 0x2E 0x19
1st Register 2nd Register 3rd Register 4th Register
Value (Hex) 1st 2nd 1st 2nd 1st 2nd 1st 2nd
0x07D7071C0F2E1900 0x07 0xD7 0X07 0x1C 0x0F 0x2E 0x19 0x00