Fisher Scientific Isotemp Series User Manual page 43

— 1 stop bit
— No Parity
7. Once your terminal indicates that serial communication has been established successfully,
enter any of the commands listed in
information you want to query.
8. Use the following generic command syntax:
— ?: 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
— XXXXXX: is the significant status information queried;
— cc: is a check sum (technically an inverted XOR of all bytes returned, excluding the
— <CR> is for carriage return.
Table 5-1 Terminal Commands for Querying Data
Command Syntax
Combined Date and Time
?:0010:00::c1
Date only
?:0011:00::c0
Time only
?:0012:00::c3
Fisher Scientific
?:aaaa:bb::cc<CR> , where:
decimal value 31;s
check sum bytes and the <CR> character);
table 5-1 below, depending on what type of
Response Example
!:0010:11:31.07.10;01:02:23:e2
Date Time
!:0011:08:31.07.10:d2
Date
!:0012:08:01:02:23:dc
Time
Connecting the RS-232 Interface
Gravity Convection Incubators
Start-up
5-9