Panasonic FP-X0 L14R User Manual page 73

Format of command and response
Command message
All command-related items should be noted in the text segment. The unit number must be specified
before sending the command.
1. Header (Start code)
Commands must always have a "%" (ASCII code: H25) or a "<" (ASCII code: H3C) at the beginning of a
message. The number of characters that can be sent in one frame differs depending on the start code.
Type of header
%
<
2. Unit number
The unit number of the PLC to which you want to send the command must be specified. In 1:1
communication, the unit number "01" (ASCII code: H3031) should be specified. The unit number of the
PLC is specified by the system register.
3. Text
The content differs depending on the command. The content should be noted in all upper-case
characters, following the fixed formula for the particular command.
4. Check code
BCC (block check code) for error detection using horizontal parity. The BCC should be created so that
-
it targets all of the text data from the header to the last text character.
The BCC starts from the header and checks each character in sequence, using the exclusive OR
-
operation, and replaces the final result with character text. It is normally part of the calculation program
and is created automatically.
The parity check can be skipped by entering "* *" (ASCII code: H2A2A) instead of the BCC.
-
5. Terminator (End code)
Messages must always end with a " C R " (ASCII code: H0D).
Note: When writing
The method for writing text segments in the message varies depending on the type of command.
-
If there is a large number of characters to be written, they may be divided and sent as several
-
commands, if there is a large number of characters in the value that was loaded, they may be divided
and several responses sent.
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. 118 characters
Max. 2048 characters
Types
FP-X0 all types
L40 / L40MR / L60/ L60MR