EXII-7720SC 3M, EXII-7720SC Datasheet - Page 27

• Manufacturer Part Number: EXII-7720SC
• Description: CONTROLLER EX II SER CAPACITIVE
• Manufacturer: 3M
• Series: MicroTouch™ Controller EXr

Specifications of EXII-7720SC

• Accessory Type: Touch Screen - Controller
• Operating Supply Voltage: 5 VDC to 12 VDC
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: - 40 C
• Connector Type: RS232
• Rohs Compliant: Yes
• For Use With/related Products: Touch Screen Capacitive
• For Use With: 3M5754 - TOUCH SCREEN CAPACITIVE 12.31"3M5752 - TOUCH SCREEN CAPACITIVE 19.75"3M5750 - TOUCH SCREEN CAPACITIVE 20.65"3M5748 - TOUCH SCREEN CAPACITIVE 17.54"3M5747 - TOUCH SCREEN CAPACITIVE 6.71"3M5745 - TOUCH SCREEN CAPACITIVE 15.68"3M5744 - TOUCH SCREEN CAPACITIVE 10.83"3M5527 - TOUCH SCREEN CAPACITIVE 31.80"3M5526 - TOUCH SCREEN CAPACITIVE 20.65"3M5525 - TOUCH SCREEN CAPACITIVE 19.75"3M5524 - TOUCH SCREEN CAPACITIVE 17.54"3M5523 - TOUCH SCREEN CAPACITIVE 15.68"3M5522 - TOUCH SCREEN CAPACITIVE 12.31"3M5521 - TOUCH SCREEN CAPACITIVE 10.83"3M5520 - TOUCH SCREEN CAPACITIVE 8.75"3M5519 - TOUCH SCREEN CAPACITIVE 6.71"
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 3M5540

3M™ MicroTouch™ Controller EX Serial Reference Guide
Format Tablet
Syntax:
Description:
Response:
<SOH>FT<CR>
Outputs the X/Y touch coordinate data in a 5-byte packet. The packet includes 1 status
byte and 4 bytes of binary X/Y coordinate data. The protocol also establishes the X and Y
coordinate output as 14 binary bits providing a range of 0 to 16,383.
The low order bits (X3 – X0 and Y3 – Y0) are not significant in a 1024 by 1024 sensor
because data can fluctuate with each touch, and therefore may not be completely
accurate.
To use Format Tablet, the controller and host system must be in an 8-bit data
communication mode. The Format Tablet command returns a negative response if the
controller is in 7-bit format.
<SOH>0<CR>
With the controller in Format Tablet mode, touching the sensor causes the controller to
return a response in the following format:
SXxYy
S
Xx = X (horizontal) coordinate data; second and third bytes of data.
Yy = Y (vertical) coordinate data; fourth and fifth bytes of data.
Table 10 Data Sequence
Data Sequence 7
S
X
x
Y
y
*MSB = Most Significant Bit, LSB = Least Significant Bit
Table 11 defines the status bits (Byte 1) for the Format Tablet data.
= Status byte, first byte of data. Refer to Table 10.
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
3M Touch Systems, Inc. Proprietary Information
MSB*
1
0
0
0
0
Positive response.
6
S6
X6
X13
Y6
Y13
5
S5
X5
X12
Y5
Y12
Bits
4
S4
X4
X11
Y4
Y11
3
S3
X3
X10
Y3
Y10
2
S2
X2
X9
Y2
Y9
1
S1
X1
X8
Y1
Y8
S0
LSB*
0
X0
X7
Y0
Y7
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