Panasonic FP7 CPU Unit User Manual page 86

Lan port communication
Table of Contents

Advertisement

Specifications
(5) Check code
• This is a CRC (Cyclic Redundancy Check) to detect errors using a generating polynomial of
hamming codes.
• The CRC 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
codes. 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
8-12
No. of characters that can be sent in
>
Max. 4096 characters
1 frame

Advertisement

Table of Contents
loading

Table of Contents