Technical information

10/29/2014
Page 13 of 72
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@
Causes the Reader to reset its internal date/timestamp to the specified time; data contains the
date and/or time in one of the following formats.
yyyy-mm-dd hh:mm:ss
yyyy-mm-dd hh:mm
hh:mm:ss
hh:mm
Note: the separators are optional; only digits are significant.
(The Reader will respond with d or e.)
Examples:
Set to midnight: @00:00
Set to Sept 1, 2005 11:52:02 PM: @2005-09-01 23:52:02
A
Notifies the Reader that the previously sent data were rejected for one of the following reasons:
 The packet was encrypted and the decryption failed.
 The Host (CodeXML
®
Modem) is locked to a different Reader.
The Reader should indicate to the user that the packet has been rejected; e.g., it may sound
error beeps. See related register 12F: notify-of-packet-rejection.
(The Reader will not respond to the Host.)
C
Apply a value to a register on the reader and save the value; data is in one of the following
formats:
(XXX)YYY where XXX is the register number and YYY is the setting value, both in ASCII hex. This
will change the value in the register and save it. For example C(26)64 will change the value of
register 26 to 0x64 and save this setting.
/(XXX)YYY where XXX is the register number and YYY is the setting value, both in ASCII hex. This
will toggle the bits in YYY and then save the resulting value (see / command). For example
C/(1F7)40 will toggle bit 6 of register 1F7 and save this setting.
O(XXX)YYY where XXX is the register number and YYY is the setting value, both in ASCII hex. This
will set the bits in YYY (change those bits to 1s) for register XXX (see O command). For example
CO(1F7)40 will set bit 6 of register 1F7 high and save this setting.
Q(XXX)YYY where XXX is the register number and YYY is the setting value, both in ASCII hex. This
will clear the bits in YYY (change those bits to 0s) for register XXX (see Q command). For example
CQ(1F7)40 will clear bit 6 of register 1F7 and save this setting.
Note: The C command saves changes immediately and those settings will survive a reboot. It is
equivalent to issuing a P and =, then a W command. C(2B)0 is the same as these three
commands combined: P(2B)0, =(2B)0, W
(The Reader will respond with d or e.)
Note: Also see commands O, P, Q, /, =, W. See Section 8 for possible Reader settings.