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Touch Screen
3.15 Touch Screen
A key feature of the CB2050 is the possibility to connect a touch screen. Both 4-wire and 5-wire resistive
touch screens are supported. For receiving the relevant signals a 5 pin standard IDC socket connector with
a spacing of 2.54 mm is provided. If the connected touch screen is 4-wire then pin 1 will not be used. There
is an accompanying jumper which, if shorted at boot time, triggers the NVRST-signal in the controller,
thereby resetting all parameters of NVRAM to default values.
Conversion to the respective connector of the touch screen must be provided externally. Please consult the
manufacturer's documentation to figure out the relevant technical details.
Note: In the pinout table below H, X, S, Y, and L are the signal names in the case of 5-wire, XL, XR, YT, and
YB are the names in the case of 4-wire.
Name
Pin
1
H-DRV
2
X/XL-DRV
3
S/XR-DRV
4
Y/YT-DRV
5
L/YB-DRV
Beckhoff New Automation Technology CB2050
H driver control
X/XL driver control
S/XR driver control
Y/YT driver control
L/YB driver control
Description
Chapter: Connectors
page 37
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