Mitsubishi Electric MELSEC iQ-RJ71C24-R4 - Page 533

APPENDICES APPENDIX
Appendix 5 Operation Image and Data Structure of Predefined Protocol
531
A
Conversion variable
■Processing procedure
C24 processes conversion variable according to the following procedure.
• When "Conversion" is 'HEX  ASCII hexadecimal' or 'ASCII hexadecimal  HEX'
Blank-padded characters
When transmitting data, upper digits are filled with the data specified in "Blank-padded character" when the number of digits is
less than that specified in "Number of Send Digits of Data".
When receiving data, either '0' or '_(space)' is processed as a blank-padded character regardless of the specification in
"Blank-padded character".
Ex.
Setting of "Number of Send Digits of Data" is '6' ('_' indicates a space character in the table)
Received data Operation of C24
000120 Considers the first 3 digits as blank-padded characters.
_ _ 0120 Considers the first 3 digits as blank-padded characters.
0 _ 0120 Considers the first 3 digits as blank-padded characters.
_ _ _ 120 Considers the first 3 digits as blank-padded characters.
00012 _ Considers it to be an ASCII  BIN conversion error (7F20H).
_ _ _ 12 _ Considers it to be an ASCII  BIN conversion error (7F20H).
0001 _ 0 Considers it to be an ASCII  BIN conversion error (7F20H).
“00001234,”
“00001234,”
C24
“00001234,”←“00001234” “00001234”←“1234”
“1234”←1234H
D0
1234H
“00001234,”→“00001234” “00001234”→“1234”
“1234”→1234H
D0
1234H
(Number of digits)
(Blank-padded character)
(Conversion) (Fixed number of data/
Variable number of data)
(Conversion unit)
(Delimiter)
Digits are filled
No delimiter
Variable number of digits
CPU device
G device
Data
transmission
BIN → ASCII
conversion of
transmitted data
Transmitted data
(numeric data)
Adding
blank-padded
characters
Adding
a delimiter
Digits are not filled (Blank-padded character : 0)
Digits are not filled (Blank-padded character : space)
Comma,
space
When "Number of digits" is ’8’ and "Blank-padded character" is ’0’
When "Conversion unit" is ’Word’
When "Delimiter" is ’ , ’
(Number of data/Maximum number of data)
(Number of digits)
(Blank-padded character)
(Delimiter)
(Fixed number of data/
Variable number of data)
(Conversion unit)
(Conversion)
No blank-padded character
Variable number of digits
No delimiter
CPU device
G device
Data
reception
ASCII → BIN
conversion of
received data
Received data
(numeric data
)
Deleting
a delimiter
Deleting
blank-padded
characters
Comma,
space
Blank-padded
characters are
included
When "Number of digits" is
’8’ and "Blank-padded character" is ’0’
When "Delimiter" is ’ , ’
When "Conversion unit" is ’Word’
(Number of data/Maximum number of data)