Thermo Scientific OGS 100, Руководство по эксплуатации

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Start-up
Connecting the RS-232 Interface
5-12 Heratherm Thermo Scientific
3. Connect one connector of the serial interface cable (cable length, 5 to max. 10 m, not
supplied as a standard item) to the socket labeled RS 232 in the electrical interfaces
section at the rear of the oven (see “RS 232 Interface” on page 4-11 ).
4. Connect the second connector to an unused COM 1 /COM 2 or other serial port on the
computer.
5. Boot the computer.
6. Launch your standard terminal program and set up the connection with the following
parameters:
— 57600 bits per second
— 8 Data bits
— 1 stop bit
— No Parity
7. Once your terminal indicates that serial communication has been established
successfully, enter any of the commands listed in table 5-1 below, depending on what
type of information you want to query.
8. Use the following generic command syntax:
?:aaaa:bb::cc<CR> , where:
— ?: identifies the command line as a query;
— aaaa: is the parameter address;
— bb:: is a query, that must be left at „00” for technical reasons;
— cc is for a command - specific checksum listed in the table below.
— <CR> is for carriage return.
You will receive a response of the following general format:
!:aaaa:bb:XXXXX:cc<CR>
, where:
— !: identifies the line as a response to a query;
— aaaa: is the parameter address entered with the query;
— bb: is the number of payload bytes in hexadecimal code - for example, 1F for the
decimal value 31 ;
— XXXXXX: is the significant status information queried;
— cc: is a check sum (technically an inverted XOR of all bytes returned, excluding the
check sum bytes and the <CR> character);
— <CR> is for carriage return.