Download 770MAX

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"fffff"
""
"gg"
““
“R=”
““
“rrrrrrr”
““
“h”
Units for measurement (example: Mo-cm).
Always a space.
Exclusive-or checksum of all preceding characters.
Always a space
Always the characters R=
Always a space
The value of the measurement range resistor
Always a space
Carriage-Return character
Data Output Example
T01=09/13/22, 08:37:04
D01=A1
3.4685 Mo-cm
D01=B1
21.4632 oC
D01=K1
0.2930 uS/cm
D01=L1
0.1100
PPM
1B
09
13
56
R=
R=
R=
R=
1000000
1000000
1000000
1000000
ATTENTION COMMAND
Description:
This command will return the software revision level, meter configuration, and serial number. It
is also used to determine if the meter is on line and able to communicate.
Command Format:
"Axx"
Where "xx" is 00 or the HEX value of the network address for the unit.
The command “AT” or “A” will also work.
Response Format:
"Axx=Thornton #775-yyy (aaaaa….aaa), Ver=zzzz, S/N=bbbb…bb”
Where "xx" is the HEX value of the network address for the unit.
“yyy’ is the model number
“zzz” is the software revision number.
“aaaa….aa” is the unit name (as programmed by the user – 20 characters maximum).
“bbbbb….bbb” is the serial number (15 characters maximum)
Example
Command: "A00" or "Axx"
Response: “A01=Thornton #775-VA2 (DI Service Unit #123), Ver=2.50, S/N=123456.”
Number of Bytes in Command
The minimum number of bytes in this command is 1 plus a <CR>.
The maximum number of bytes in this command is 3 plus a <CR>.
Number of bytes in Response
The minimum number of bytes in this response is 42 plus a <CR>.
The maximum number of bytes in this response is 72 plus a <CR>.
GET DATA COMMAND
Description:
This command will return the latest set of measurement data.
Command Format:
"Dxxbyz"
Where "xx" is 00 or the HEX value of the network address for the unit
"b" = measurement channel (A..P) to get. If this character is a "?" then all
measurements will be returned.
"y" = optional
y = "F" to request measurement data in Thornton floating point format
Chapter 6
RS232 Communications
17