JULABO F38-ME Beer Forcing Test Refrigerated/Heating Circulating Bath User Manual
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12.2.
Communication with a PC or a superordinated data system
If the circulator is put into remote control mode via the configuration level, the
VFD COMFORT-DISPLAY will read “R -OFF-” = REMOTE STOP. The
circulator is now operated via the computer.
In general, the computer (master) sends commands to the circulator (slave).
The circulator sends data (including error messages) only when the
computer sends a query.
In remote control mode, the start command and all values to be set must be
resent by the PC via the interface in case of a power interruption.
AUTOSTART is not possible.
A transfer sequence consists of:
command
space (
; Hex: 20)
parameter (decimal separation with a period)
end of file (
; Hex: 0D)
The commands are divided into in and out commands.
in
commands:
retrieve parameters
out
commands: set
parameters
Important times for a command transmission:
To ensure a safe 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 a LF (Line Feed). The next command should only be sent after
10 ms.
The out commands are valid only in remote control mode.
Command to set the working temperature > SETPNT 1< to 55.5 °C
out_sp_00
55.5
Command to retrieve the working temperature > SETPNT 1< in_sp_00
Response from the circulator:
55.5