JULABO CF40 Cryo-Compact Circulators - Manual (Page 29)

Cryo-Compact Circulator
29
10. Remote control
10.1. Setup for remote control
9 6
5 1
SERIAL
1. Check the interface parameters for both interfaces (on Cryo-
Compact Circulator and PC) and make sure they match.
2. Set the interface item from >IOFF< to >ION<.
3. Connect both units with an interface cable.
Interface parameters are pre-determined.
BAUDRATE 4800 Bauds
PARITY even
HANDSHAKE hardware
handshake
10.2. Communication with a PC or a superordinated data system
If the Cryo-Compact Circulator is put into remote control mode the
MULTI-DISPLAY (LED) will read „R -OFF-„ = REMOTE STOP. The
Cryo-Compact Circulator 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
out/in command
 space
( ; Hex: 20) out/in command
 parameter
(the character separating decimals in a group
is the period) out command
 end of file
(
; Hex: 0D)
out/in command
 The response (data string) after an in command is always followed
by a line feed (LF, Hex: 0A).