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OPEARTING MANUAL
Technische Änderungen vorbehalten
B+B Thermo-Technik GmbH | Heinrich-Hertz-Str. 4 | D-78166 Donaueschingen
0141 0315-100 24.06.2022
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7.2
Communication Settings
7.2.1
Serial Interfaces
Baudrate
9,6...115,2 kBaud (adjustable on the unit or via Software)
DM 4M
: 115,2 or 921,6 kBaud (adjustable on the unit or via
software)
Data bits
8
Parity
NONE
Stop bits
1
Flow controll
OFF
7.2.2
Protocol
All sensors of the DM series are using a binary protocol. Alternatively, they can be switched to an ASCII protocol (only LT versions). To get a fast
communication the protocol has no additional overhead with CR, LR or ACK bytes.
7.2.3
ASCII-Protocol
The models
LT21
,
LT151
,
LT201
,
LT21H
and
LT101H
can be switched to ASCII by changing the first figure of block 3 of the head calibration code.
This figure has to be changed from
0
to
4
(old sensing head) or
8
to
C
(new sensing head
). [►4.3 Exchange of the Sensing Head]
Example
(new Sensing head): Binary-Protocol:
A6FG – 22KB –
8
AS0
ASCII-Protokoll:
A6FG – 22KB –
C
AS0
1.Block 2.Block 3.Block
1.Block 2.Block 3.Block