Manual

Recirculating coolers
37
9. Remote control
9.1. Communication with a PC or data system
ACTUAL
SET
For remote control, under the menu item OP (Operating
mode) set the parameter to 1.
The message "rOFF" appears on the display.
In general, the computer (master) sends commands to the
recirculating cooler (slave). The recirculating cooler sends
data (including error messages) only when the computer
asks for it.
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 commands are divided into in or out commands.
in commands: asking for parameters to be
displayed
out commands: setting parameters

The out commands are valid only in remote control mode.
Examples:
 Command to set the setpoint to 5.5 °C:
out_sp_00  5.5
 Command to ask for the setpoint:
in_sp_00

 Response from the recirculating cooler:
5.5

9.2. List of commands
Command Parameter Response of recirculating cooler
version no Number of software version
status no Status message (see below)
out_mode_04
out_mode_04
in_mode_04
0
1
no
Set control mode via PC
Set control mode via programmer input (O)
Ask for actual control mode
out_mode_05
out_mode_05
in_mode_05
0
1
no
Stop the recirculating cooler = rOFF
Start the recirculating cooler
Ask for actual condition (Start/Stop)