5. If the measured temperature lies between +45°C and Tmax, the WARNING
LED is flashing. The open collector output (OC) is not connected to ground.
The PID regulator works normally (unless the overriding limit mentioned
before is exceeded).
Closed/Connected SJ1 jumper mode
1. Adjustment with use of UART port
Using PC and USB to TTL converter it is possible to send (valid only for
advanced version) and read parameters to/from the regulator. While using this
mode, trimmers are not working, and user gets control via USB to TTL
communications which allows of automatization of cooling and heating process.
Additionally, it is possible to set Tmax and Tmin values which are checked by the
driver (OC and Warning LED).
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