User's Manual

HF Mifare Easy Module V1.0
ACG Identification Technologies GmbH 49
7.4.3.13 Select
This command selects a single card in the antenna field. It can only be used in single
tag mode. In the case of success the command returns the UID of the selected card.
The reader detects the length of the card automatically.
Command
Command Data
's' None
Answer
Answer Description
Data serial number
'N' Error: No Tag in the field
Example
Command Description
s 1234567890ABCD
Select the card with its UID 1234567890SABCD.
7.4.3.13.1 Select a single tag
No previous continuous read is required. The command executes an automatic field
reset.
7.4.3.13.2 Extended ID
For more information of the Extended ID refer to Protocol configuration register.
7.4.3.13.3 Multiple tags
This command is designed for fast access of a single tag in the field. If multiple cards
are used the 'm' instruction has to be used instead.