Panasonic KT4H - MEWTOCOL Communication Protocol; MEWTOCOL Data Format Specifications; MEWTOCOL Command Configuration Structure

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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 1 2 1 5 5 2 1
%
(25H)
Address
(Decimal)
#
(23H)
Command
code
RD
Data
code
D
Top
data item
(Decimal) (*)
Top
data item
(Decimal) (*)
BCC
C
R
(0DH)
(*): KT4H/B cannot read plural word data. Make sure that both top data items are the same.
Acknowledgement
1 2 1 2 4 2 1
%
(25H)
Address
(Decimal)
$
(24H)
Command
code
RD
Reading
top data
(Hexadecimal)
BCC
C
R
(0DH)
16
1
16
0
16
3
16
2
Low High
Negative acknowledgement
1 2 1 2 2 1
%
(25H)
Address
(Decimal)
!
(21H)
Error
code
(Hexadecimal)
BCC
C
R
(0DH)
(2) WD (Word data writing) command protocol configuration
1 2 1 2 1 5 5
%
(25H)
Address
(Decimal)
#
(23H)
Command
code
WD
Data
code
D
Top
data item
(Decimal) (*)
Top
data item
(Decimal) (*)
4 2 1
Writing
top data
(Hexadecimal)
BCC
C
R
(0DH)
16
1
16
0
16
3
16
2
Low High
(*): KT4H/B cannot read plural word data. Make sure that both top data items are the same.
Acknowledgement
1 2 1 2 2 1
%
(25H)
Address
(Decimal)
$
(24H)
Command
code
WD
BCC
C
R
(0DH)
Negative acknowledgement
1 2 1 2 2 1
%
(25H)
Address
(Decimal)
!
(21H)
Error
code
(Hexadecimal)
BCC
C
R
(0DH)