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In this case the value to be assigned to the ADDRESS
field must be 80 hex.
where :
<STX>= 0x02
<ADR> =
0x80
<WINDOWS>=' 000 '...' 999' window number
the meaning of the window
depends to the device type
<COMMAND>= 0x30 :window value reading
0x31 :window writing
<DATA> =
alphanumeric ASCII string
containing, in the case of writing
operation,the parameter to input
into the window addressed by
the field <WINDOW>This field
may have variable length
according to the data type
contained in the window where
you are working in. In the case of
reading request of a window, the
data field doesn't exist.
<ETX>= 0x03
<CRC>=
XOR among all the characters
following <STX>=(with exception
of <STX>), including the end
character <ETX> hexadecimally
encoded by two ASCII characters.
When a slave device is addressed by the master:
In case of reading request of the value contained in
a window, the slave answers a string equal to the
one sent by the master but in addition there is the
field
<DATA>
containing
window.The format of the field <DATA> depends to
the window type.
The different types are:
Length
Logic (L)
1
Numeric (N)
6
Alphanumeric (A)
max 10
the
value
of
the
Characters
Permitted
'0'=OFF
'1'=ON
'-', '.','0'...'9'
(Justifield to the right
with '0')
' '...'_'
EXAMPLES:
Command : START
Source
: PC
Destination : Inverter
02
80
30
STX
ADDR
WINDOW
Source
: Inverter
Destination : PC
02
80
06
STX
ADDR
ACK
Command : STOP
Source
: PC
Destination : Inverter
02
80
30
STX
ADDR
WINDOW
Source
: Inverter
Destination : PC
02
80
06
STX
ADDR
ACK
Command : SOFT-START (ON)
Source
: PC
Destination : Inverter
02
80
31
STX
ADDR
WINDOW
Source
: Inverter
Destination : PC
02
80
06
STX
ADDR
ACK
Command : SOFT-START (OFF)
Source
: PC
Destination : Inverter
02
80
31
STX
ADDR
WINDOW
57
TECHNICAL INFORMATION
03
30
30
31
31
WR
ON
ETX
03
38
35
ETX
CRC
03
30
30
31
30
WR OF
ETX
F
03
38
35
ETX
CRC
30
30
31
31
03
WR
ON
ETX
03
38
35
ETX
CRC
30
30
31
30
03
WR OF
ETX
F
87-900-855-01 (B)
42
33
CRC
42
32
CRC
42
32
CRC
42
33
CRC
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