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ID TECH EzWriter
Reader Responses
There are two types of responses that the unit, solicited and unsolicited. The unit
produces a solicited response after receiving a command from the host. This includes
command acknowledgements, card data, etc. The unit produces an unsolicited response
normally due to a user’s action or a power on situation.
Solicited Responses
Table 5 – Solicited Response Summary
ASCII
HEX
Name
Use
Length*
^ 5E Command Completed (ACK) 1
! 21 Invalid Command 1
*
2A
Error
1
+ 2B No data found 1
- 2D Insufficient leading zeros for custom writing 1
/ 2F lsb of first character not a “1” for custom writing 1
? 3F Communications error 1
~ 7E Can’t Execute, hardware does not support command 1
*Length does not include protocol overhead characters, if any.
Unsolicited Responses
Table 6 – Unsolicited Response Summary
ASCII
HEX
Name
Use
Length*
:
3A
Power On Report
1
^ 5E Card swipe occurred when armed to read or write 1
1 31 Unsuccessful read after write – Track 1 1,2 or 3**
2 32 Unsuccessful read after write – Track 2 1,2 or 3**
3 33 Unsuccessful read after write – Track 3 1,2 or 3**
( 28 Card speed measurement - start 1
) 29 Card speed measurement - end 1
> 3E Card edge detected 1
*Length does not include protocol overhead characters, if any.
** Responses combined into one message back to the host.