JULABO FPW50-HL Refrigerated Circulators - Manual (Page 87)

HL
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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
Notice: out commands
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
out_mode_01 0 Use working temperature >Setpoint1<
out_mode_01 1 Use working temperature >Setpoint2<
out_mode_01 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.