Remote control
84
Important times for a command transmission:
To ensure secure data transfer, the time gap between two commands
should be at least 250 ms.
The circulator automatically responds to an IN command with a data string
followed by an LF (Line Feed). The next command should be sent only
after 10 ms.
The OUT commands are valid only in remote control mode.
Examples:
When the RS485 interface is used, the three-digit instrument address
precedes each command.
(example: address Ad32 = A032)
Command to set the working temperature >Setpoint1< to 55.5 °C
OUT_SP_00
55.5
A032_OUT_SP_00
55.5
Command to retrieve the working temperature >Setpoint1<
IN_SP_00
A032_IN_SP_00
Response from the circulator:
55.5
LF
A032_55.5
LF
Temperature values can be displayed on the circulator in °C or °F.
The settings sent via the interface must also be made in the selected unit according
to this setting.
12.3. List of commands
OUT commands: Setting parameters or temperature values.
Command Parameter Response of circulator
0 Use working temperature >Setpoint1<
Use working temperature >Setpoint2<
2 Use working temperature >Setpoint3<
OUT_MODE_02
0 Selftuning “off”.
Temperature control using the stored parameters.
OUT_MODE_02
1 Selftuning “once”
Single selftuning of the controlled system after the next start.
OUT_MODE_02
2 Selftuning “always”
Continual selftuning of the controlled system whenever a new
setpoint is to be reached.