A80, A80t, W80, W80t Operating Manual
28.08.2019
43
7.
Remote operation, laboratory automation
7.1.
Preparing for remote control
RS232, serial interface.
Refer to the "User
Interface" operating
instructions (1.951.3041).
SERIAL
BAUD RATE
4800 Baud
PARITY
Even parity
HANDSHAKE
RTS/CTS Protocol (Hardware handshake)
Data bits
7
Stop bit
1
7.2.
Communication with PC or higher priority data system
When the
temperature control system is in remote control
mode, the following symbol appears on the TFT display:
"R " = REMOTE
In most cases, commands are sent from the computer (“master
device”) to the temperature control system (“slave device”). The
temperature control system will also send error messages to the
computer, if the computer requests to know the current status of the
instrument.
If there is a power failure during remote control operation, the computer
must resend the start command and all other settings through the
RS232 or USB interface.
The instrument will not automatically restart when power is restored!
Signals are transferred in accordance with DIN standard 66022 and
DIN standard 66003, code table 1.
A transmission sequence consists of:
•
Command
•
Space (
⇔
; Hex: 20)
•
Parameter (if applicable; period (“dot”) character used for
decimal point)
•
Termination (
↵
; Hex: 0D)
Commands are divided into
in
and
out
commands.
In commands: retrieve parameters from the instrument
out commands: set parameters on the instrument
out commands can only be used while remote control mode is
active.
For more information, see the
"User Interface" manual, 1.953.3041.
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6
5
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