Panasonic AFP7CPS4E User Manual page 134

Fp7 series, programmable controller
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Specifications
(5) Check code
 This is a CRC (Cyclic Redundancy Check) to detect errors using a generating polynomial of
hamming codes.
 This should be created so that it targets all of the text data from the header to the last text
character.
 CRC is a value given by replacing the result of calculation by CRC-16-CCITT with ASCII
code. It is normally part of the calculation program and is created automatically.
(6) Terminator (end code)
Messages must always end with a "CR" (ASCII code: H0D).
KEY POINTS
The method for writing text segments in the message varies depending on
the type of command.
When the message to be sent contains a large number of characters, send
the command divided in several times.
When the message contains a large number of characters, the response is
sent divided in several times.
In MEWTOCOL7 command, up to 4096 characters can be sent/received in a
single frame.
Type of header
>
11-10
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
No. of characters that can be sent
in 1 frame
Max. 4096 characters

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