Operating Instructions | HERAcell® 150i / 240i
13
Annex: Data communication
13
Annex: Data communication
50115191 A / 08.2009
127
13.2 Structure of the command sequences for data
communication
All characters sent and received in the data exchange between a PC and the
incubator
HERAcell
®
150 i / 240 i
are ASCII characters that can be displayed
on a conventional terminal.
This ensures that communication can be set up, controlled, and
programmed easily.
13.2.1 Description of the protocol
Protocol characteristics
Character coding
ASCII characters, capital letters are not allowed.
Reading parameters:
Query:
?:aaaa:bb::cc<CR>
or:
?:aaaa:bb:XXXX:cc<CR>
Response:
!:aaaa:bb:XXXXX:cc<CR>
where:
aaaa = parameter address
bb = amount of payload in this telegram (00 – ff)
cc = checksum: Inverted XOR of all bytes without
checksum and <CR>
XXXX = bb payload bytes
Description of the response elements:
aaaa
parameter address
bb
amount of payload in this telegram (00 – ff)
cc
checksum: Inverted XOR of all bytes without
checksum and <CR>
Example of a software version query (50111927):
Query:
?:0001:00::cc<CR>
Response:
!:0001:08:50111927:cc<CR>
Writing parameters:
Command:
!:aaaa:bb:XXXXX:cc<CR>
Response:
!:aaaa:bb::cc<CR>
where:
aaaa = parameter address
bb = amount of payload in this telegram (00 – ff)
cc = checksum: Inverted XOR of all bytes without
checksum and <CR>
XXXX = bb payload bytes
Response with an error message:
Response:
!:aaaa:bb:XX:cc<CR>
Description of the response elements:
aaaa
parameter address,
bb
amount of payload (always 02)
cc
checksum: Inverted XOR of all bytes without
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