15
In a network system with custom designed interface modules acting as the master on the Modbus, it is not
desirable to let the compressor run after communication to the master has been lost.
If communication is lost it will not be possible for the customer to stop the compressor, as long as cooling
is requested.
When there is no contact to the master controller (Communication time out), after a certain time the
compressor will stop. The stop is acknowledged by the Main Switch. The Main Switch will be set to OFF
and will remain OFF until the master controller sets it back to ON via Modbus.
In order for customers to protect settings from being read out by others, a protection function is available.
The code must be verified by entering it twice.
Lost communication
Protection of settings
Settings
13.
COMMUNICATION
Name Default Max value Min value Step Unit
Node number 1 247 1 1
Bits per second 19200 9600 19200 9600 bps
Set main switch to
OFF when communi-
cation timeout occurs
900 15 7200 1 Seconds
Communications
timeout
900 15 7200 1 Seconds
Setting protection
code and status
0 9999 0 1
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