Specifications

E271-2200 and E271-2210 Controllers 107

4 0 0 Y5 Y4 Y3 Y2 Y1 Y0

Z-Data Enabled (E281A-4002 Mode) J2-N, J10-N, J11-Y; 0/1,6

Byte MSB LSB

1 1 1 X11 X10 X9 X8 X7 X6

2 1 0 X5 X4 X3 X2 X1 X0

3 0 1 Y11 Y10 Y9 Y8 Y7 Y6

4 0 0 Y5 Y4 Y3 Y2 Y1 Y0

5 0 0 Z11 Z10 Z9 Z8 Z7 Z6

6 0 0 Z5 Z4 Z3 Z2 Z1 Z0

Since the Z coordinate is only a 4-bit number, bit positions Z11-Z4 will be 0. This

includes all of byte 5.

If jumpered for E281A-4002 emulation mode, or TouchFlag is 1, the Z value will

be zero on untouch.

After a driver receives a complete packet, it typically masks off the upper two bits

by logically ANDing each byte with 3Fh, shifts the most significant byte of each

coordinate left 6 bits, then ORs it with the least significant byte.

ASCII Output Data

Transmission of a single touch packet in ASCII Mode requires 11 bytes, or 16

bytes if Z data is enabled. The packet is identified by leading carriage return and

line feed characters. The coordinates are separated by a space character. The

coordinate range may be for 0 to 9999.

Z Data Disabled without Untouch Flag (E271-140 Mode)

J2-Y, J10-Y, J11-N; 0,1

<CR><LF>XXXX YYYY

Z Data Disabled with Untouch Flag (E271-140 Mode) N/A; 1,1

Z Data Enabled without Untouch Flag (E281-4002 Mode) N/A; 0,7

<CR><LF>XXXX YYYY ZZZZ

Z Data Enabled with Untouch Flag (E281A-4002 Mode)

J2-Y, J10-N, J11-Y; 1,7

<CR><LF>XXXX YYYY ZZZZ

The Z value is zero on untouch.