BECKHOFF CB2051 - Manual (Page 36)

Chapter: Connectors Touch Screen
page 36 Beckhoff New Automation Technology CB2051
3.17 Touch Screen
A key feature of the CB2051 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.
Next to this connector is a 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.
Pin Name Description
1 H-DRV H driver control
2 X/XL-DRV X/XL driver control
3 S/XR-DRV S/XR driver control
4 Y/YT-DRV Y/YT driver control
5 L/YB-DRV L/YB driver control