YSI IQ SensorNet 2020 XT Terminal - Manual (Page 117)

System 2020 XT USB Operation
4 - 39 ba76019e01 12/2012
4.11 MIQ/TC 2020 XT in its function as terminal and backup
controller
If the MIQ/TC 2020 XT was configured as a terminal, the integrated
controller works as a backup controller. The backup controller saves
the system data at regular intervals and is immediately available in the
system as a backup controller if the main controller fails. If several MIQ/
TC 2020 XT are configured in the IQ S
ENSOR N ET as terminals, one
MIQ/TC 2020 XT takes over the function of the backup controller. The
function is shown on the display.
The diagram on the following page illustrates how the MIQ/TC 2020 XT
works when it is configured as a terminal: