JULABO SC 2500w Eco-Series Recirculating Coolers - Manual (Page 41)

Recirculating Cooler
41
12. Remote control
12.1. Setup for remote control
9 6
5 1
RS232C
 Check the interface parameters for both interfaces (on circulator and PC)
and make sure they match.
(Serial interface - see page 35)
 Set the menu item >Remote< from >no< to >YES<.
(see page 35).
 Connect both units with an interface cable.
 Like all parameters which can be entered through the keypad, interface
parameters are stored in memory even after the circulator is turned off.
12.2. Communication with a PC or a superordinated data system
If the recirculating cooler is put into remote control mode via the configuration
level, the VFD COMFORT-DISPLAY will read „R -OFF-„ = REMOTE STOP.
The recirculating cooler is now operated via the computer.
In general, the computer (master) sends commands to the recirculating
cooler (slave). The recirculating cooler sends data (including error messages)
only when the computer sends a query.
 In remote control mode: After a power interruption the order to start and all
values which have to be adjusted must be resent from the personal computer
via the interface.
AUTOSTART is not possible.
A transfer sequence consists of:
 command
 space
(; Hex: 20)
 parameter (the character separating decimals in a group is the period)
 end of file (; Hex: 0D)
 The response (data string) after an in command is always followed by a
line feed (LF, Hex: 0A).
The commands are divided into in or out commands.
in
commands: asking for parameters to be displayed
out
commands: setting parameters