Mewtocol - Panasonic KT4H User Manual

12.5 MEWTOCOL

12.5.1 Data format
Start bit : 1 bit
Data bit : 7 bits (8 bits) Selectable
Parity : Even (No parity, Odd) Selectable
Stop bit : 1 bit (2 bits) Selectable
12.5.2 Command configuration
MEWETOCOL of the KT4H/B uses RD and WD commands.
Writing and reading of plural word data cannot be carried out.
Be sure to read and write one word at a time because continuous reading/writing of plural data is
impossible.
All commands are composed of ASCII.
Numerals written on the command represent number of characters.
(1) RD (Word data reading) command protocol configuration
1 2
% Address
(25H) (Decimal)
(*): KT4H/B cannot read plural word data. Make sure that both top data items are the same.
Acknowledgement
1 2
% Address
(25H) (Decimal)
Negative acknowledgement
1 2
% Address
(25H) (Decimal)
(2) WD (Word data writing) command protocol configuration
1 2
% Address
(25H) (Decimal)
(*): KT4H/B cannot read plural word data. Make sure that both top data items are the same.
Acknowledgement
1
% Address
(25H) (Decimal)
Negative acknowledgement
1 2
% Address
(25H) (Decimal)
1 2
Command
#
code
(23H)
RD
1 2
Command
$
code
(24H)
RD
1 2
Error
!
code
(21H)
(Hexadecimal)
1 2
Command
#
code
(23H)
WD
2 1 2
Command
$
code
(24H)
WD
1 2
Error
!
code
(21H)
(Hexadecimal)
1 5
Data Top
code data item
D (Decimal) (*)
4 2
Reading
top data BCC
(Hexadecimal)
1 0 3 2
16 16 16 16
Low High
2 1
C
R
BCC
(0DH)
1 5
Data Top
code data item
D (Decimal) (*)
2 1
C
R
BCC
(0DH)
2 1
C
R
BCC
(0DH)
40
5 2
Top
data item BCC
(Decimal) (*)
1
C
R
(0DH)
5
Top
data item
(Decimal) (*)
4 2
Writing
top data BCC
(Hexadecimal)
1 0 3 2
16 16 16 16
Low High
1
C
R
(0DH)
1
C
R
(0DH)