3M EX II 3000SP 用户手册
EX II 3000SP Controller Communications
29
3M Touch Systems Proprietary Information
Table 9 Format Tablet Status Bits
Bit
Description
Values
S0 – S5
Reserved
—
S6
Proximity
(touch state)
(touch state)
1 = Touch screen is being touched (a touchdown
or a continued touch).
or a continued touch).
0 = Touch screen is not being touched (a touch
liftoff or inactive).
liftoff or inactive).
When the proximity bit changes from 1 to 0
(touch liftoff), the controller outputs one final set
of X/Y coordinate data with the bit equal to 0 and
the X/Y coordinate data equal to the last touch
point.
(touch liftoff), the controller outputs one final set
of X/Y coordinate data with the bit equal to 0 and
the X/Y coordinate data equal to the last touch
point.
S7
Packet
synchronization
synchronization
Always 1.
Mode Stream
Syntax:
<SOH>MS<CR>
Description:
Sends a continuous stream of X/Y coordinate data when you touch the
screen. The controller continues to send data as long as you touch the
screen. The controller sends the data even if the touch is stationary and
unchanging.
screen. The controller continues to send data as long as you touch the
screen. The controller sends the data even if the touch is stationary and
unchanging.
The format of the coordinate data depends on the last format command
received by the controller.
received by the controller.
Format Raw automatically uses Mode Stream to send X/Y coordinate data.
Response:
<SOH>0<CR> Positive response
Null Command
Syntax:
<SOH>Z<CR>
Description:
Queries the controller and waits for a response.
Use Z to determine that you are communicating with the controller or to
make sure that a utility is communicating with the controller. Using this
command does not affect the controller’s current operating parameters.
make sure that a utility is communicating with the controller. Using this
command does not affect the controller’s current operating parameters.
Response:
<SOH>0<CR> Positive response