Varian Turbo-V 300 ICE Manual De Instrucciones página 65

where:
<STX>= 0x02
<ADDR> = 0x80 (for RS 232 and
RS 422 only)
<ADDR> = 0x80 + device number (0...31)
0xFF: brodcasting command
(recognized by all the devices, it
doesn't implicate any answer)
(for RS 485 only)
<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 the value of the 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
87-900-902-01 (G) - TURBO-V 300 ICE CONTROLLER
Characters
Permitted
'0'=OFF
'1'=ON
'0'...'9'
(Justifield to the right
with '0')
' '...'_'
TECHNICAL INFORMATION
EXAMPLES:
Command : START
Source : PC
Destination : Inverter
02 80 30 30
STX ADDR WINDOW
Source : Inverter
Destination : PC
03
02 80 06
STX ADDR ACK ETX
Command : STOP
Source : PC
Destination : Inverter
02 80 30 30
STX ADDR WINDOW
Source : Inverter
Destination : PC
03
02 80 06
STX ADDR ACK ETX
Command : SOFT-START (ON)
Source : PC
Destination : Inverter
02 80 31 30
STX ADDR WINDOW
Source : Inverter
Destination : PC
02 80 06
03
STX ADDR ACK ETX
Command : SOFT-START (OFF)
Source : PC
Destination : Inverter
02 80 31 30
STX ADDR WINDOW
Source : Inverter
Destination : PC
02 80 06
03
STX ADDR ACK ETX
03 42
30 31 31
WR ON ETX CRC
38 35
CRC
03 42
30 31 30
WR OF ETX CRC
F
38 35
CRC
30 31 31 03 42
WR ON ETX CRC
38 35
CRC
30 31 30 03 42
WR OF ETX CRC
F
38 35
CRC
33
32
32
33
57