Specifications
11-12
(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)
The message should end with "CR" (ASCII code: H0D).
NOTES
If no response is returned, the communication format may not be correct, or
the command may not have arrived at the PLC, or the PLC may not be
functioning. Check to make sure all of the communication specifications
(e.g. baud rate, data length, and parity) match between the computer and
the PLC.
If the response contains an “!” instead of a “$”, the command was not
processed successfully. The response will contain a communication error
code. Check the meaning of the error code.
Station no. and command name are always identical in a command and its
corresponding response (see below). This makes the correspondence
between a command and a response clear.
@
E
E
E
0
#
0
>
0
M
M
R
D
0
C
Same
@
E
E
E
0
$
0
>
0
M
M
R
D
0
C
Same
Same
Command
Response
R
R
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
Содержание AFP7CPS4E
Страница 1: ...Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 10: ...Table of Contents viii Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 21: ...2 Names and Functions of Parts Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 24: ...Names and Functions of Parts 2 4 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 25: ...3 Wiring the COM Port Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 45: ...3 I O Allocation Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 52: ...I O Allocation 4 8 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 57: ...6 PLC Link Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 97: ...9 General Purpose Communication Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 114: ...General Purpose Communication 9 18 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 115: ...4 Troubleshooting Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 124: ...Troubleshooting 10 10 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 125: ...11 Specifications Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
