Diagnostic Codes; Intellitouch Serial Controller (2500S; The Intellitouch Serial Controller (2500S) Bit Position Relating To Each Byte - Elo TouchSystems IntelliTouch SecureTouch Manual

Diagnostic Codes

The diagnostic codes may be a single byte or pair of bytes displayed in hex.
The following tables for each controller list the bit positions defined for each
byte. A 1 bit indicates a failure. Diagnostic codes are computed by summing the
value for each bit position using hexadecimal arithmetic.

IntelliTouch Serial Controller (2500S)

These controllers have a two-byte diagnostic code displayed in the form AA-
BB. The AA byte is defined below. The BB byte is the same as the 4035
controller, defined above in Table A.1.
AA Bit
7
6
5
4
3
2
1
0
Table A.3

The IntelliTouch Serial Controller (2500S) bit position relating to each byte.

Value (hex) Description
80 Touch microprocessor test incomplete
40 Reserved
20 Touch microprocessor test failed—touchscreen may not be
connected
10 Nonvolatile RAM checksum test failure
08 RAM read/write test failure
04 ROM checksum test failure
02 Microprocessor logic/register test failure
01 Firmware/hardware compatibility test failure
A-59