PPC Manual Revision 1
Chapter 20: Modbus Communication
“”
Default value FF FF
Communication address
0B
---------
FF F4
87 01
--------
87 FE
03
--------
87 FD
81 C1
--------
•
•
•
•
•
•
81 46
14 78
04
--------
14 7C
E1 01
--------
Resulting error E1 15
Convert the hex value to a decimal
value, find the corresponding number
in table of next page (Table Showing Results
of Error Checking (CRC) of Values 0 to 255
by A001h), and substitute the number
into the formula.
In the example shown on the left,
hex value “F4” is converted to decimal
value 244. From table of next page, the number
corresponding to 244 proves to be “8701”.
This number is substituted into the formula.
“04”.
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