EIUK PTB 600 - Page 27

PTB600-MAN-V10.4 PTB 600 Instruction Manual
27
Each commands string are ASCII character succession.
First is $ character; the next must indicate the instrument address (default 1) and than is the command (4
characters).
Possibility:
RVAR (data reading)
WVAR (data writing)
The ultimate part of string is depending of a type command. The character (cr) concludes the sequence
DATA READING:
Example 1) reading of the Set Point (0 variable):
the command string is: $1RVAR0_<cr>
Each characters means:
$ beginning of message
1 instrument address
RVAR reading command
0 number of the variable to read (see the table of the “VARIABILES” on the previous page)
_ space
<cr> end of message
the response string is: *1_110,0 (110,0 is only for example)
The character <cr> concludes the message.
Command to read the temperature of an external probe (index 25):
Example 2) reading of the EXT sensor (105 variable):
the command string is: $1RVAR105_<cr>
the response string is: *1_123,4 (123,4 is only for example)
The character <cr> concludes the message.
The response does not include the measure unity, to read the unity read the variable 10:
the command string is: $1RVAR10_<cr>
the response string is: *1_0 for °C
the response string is: *1_1 for °F