ITC DOSmart AC, Manual

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Installation
5.1.5.1 Remote activation
An external remote control can be used to start and stop the pump via volt-free contact at positions 17-18.
STOP
RUN (factory default)
5.1.5 ModBus mode
The pump can be controlled via the RS485 serial port and a ModBus RTU protocol. See the complete
ModBus manual.
- Bus: RS485
- Communication: half-duplex L(H), H(B), and GND
- Baud rate: 9600
- Data bits: 8
- Parity: None
- Stop bits: 1
- Hardware handshake: No
- Character time out: 20 ms
- Time out message end: 100 ms
Important: If an RS232RS485 or similar type converter is required, make sure that the signal emitted does
not produce an echo signal.
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When the contact is closed (RUN) the pump may be run manually via the ENT key. After stopping the
pump manually via the keypad, it is necessary to reset the Remote Input (open and close) to start the
pump again remotely.
5.1.5.2 Priming function test
By pressing
for 3 seconds in manual mode, to start the pump at maximum speed. The pump will
continue to run only when is pressed.
This feature allows a quick test of the unit and is an aid in priming the pump.