MAXA HI-T - 2 O Resources; Touch Screen Pcb; Layout; Touch-Screen Use

 Hi‐TCentralizedcontroller
5
2 I/ORESOURCES
2.1 TOUCHSCREENPCB
2.1.1 LAYOUT
Figure1.Layout.
2.1.2 TOUCH‐SCREENUSE
Theinterfacehasaresistivetouch‐screenLCDwithsensitiveareasappliedtothecontextualcontentoftheactivescreen.
Itallowsyoutoselectitemsorperformfunctionswithease.
Donotexerttoomuchpressureonthetouchscreenwithyourfingersanddonotuseasharpobject
onthetouchscreen.Doingso
maydamagethetouchscreenorcauseittomalfunction.
It is advisable to exert weaker pressure and not too fast on the screen and to become familiar with the use of the touch‐screen
itself,wellcalibratingthetouchofyourfingertipon
thesensitiveareasofthescreens.
Donotputthetouch‐screenincontactwithotherelectricaldevices.Electrostaticdischargemaycauseamalfunction.
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2.1.3 DISPLAY
ThedisplayisaTFTLCD16/9formatwithadiagonal4.3".Theresolutionis480x272pixels.TheLCDishandledwith16bitcolour
depth(65535colours).
2.1.4 POWERSUPPLY
Description Characteristics ID
POWERSUPPLY12VAC 12Vac(min.10Vac–max.14Vac)
2.1.5 ANALOGUEINPUT
Description Characteristics ID
Roomtemperature
NTCprobe,conversionrange‐20°C÷+100°C
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Relativehumidity 0%‐90%attemperaturebetween‐20°Cand60°C 
2.1.6 SERIALANDCONNECTIVITY
Description Characteristics ID
USB USBHost(formassstorageplug)/connectortypeA USB
RS485isolate IsolatedRS485toModbusSerialchiller/heatpumpandfancoil
TTL ModbusserialTTLforfutureuse
ETH Ethernetport10/100BASETforminimalweb‐server