383M™
AD Indicates the PX series of controllers
Ffff = Four ASCII characters that indicate the features supported by the controller.
****Indicates no additional features configured
Ss | = Two ASCII characters that provide status information about the |
| controller hardware. The two characters represent one byte. Each |
| character is in the range 0 to 9 and A to F. |
| Table 2 defines the meaning of each bit in the status byte. Each bit |
| can be set to 1 or 0, where 1 = an error and 0 = no error. So a |
| response of: |
00 = No diagnostic errors (normal response)
The PX running with no errors returns the following string:
<SOH> AD****00 <CR>
The format includes two bitmapped ASCII hex status bytes. A “00” indicates no errors.
Table 19 Bit Meanings in Status Byte
Bit | Description | Notes | |
0 | Not used |
| |
1 | ROM_ERROR | Code area checksum error | |
2 | PWM Error | Touch screen not connected or potential problem. | |
3 | NOV_ERROR | Parameter Block1 checksum error | |
4 | HDW_ERROR | Problem with ADCs | |
5 | Not used |
| |
6 | Not used |
| |
7 | Not used |
|
Touch Data Format
The format is a six byte packet that includes one status byte, four bytes of binary X,Y position data and a touch ID. The X,Y coordinates are 14 bits, providing a range of 0 to
16,383. The data is sent in the following format:
Table 20 Touch Data Format Settings
Data Sequence | Bits |
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| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Status - Byte 1 | 1 | P1 | 0 | 0 | 0 | 0 | 0 | 0 |
X - Byte 2 | 0 | X6 | X5 | X4 | X3 | X2 | X1 | X0 |
X - Byte 3 | 0 | X13 | X12 | X11 | X10 | X9 | X8 | X7 |
Y - Byte 4 | 0 | Y6 | Y5 | Y4 | Y3 | Y2 | Y1 | Y0 |
