User's Manual

HF Mifare Easy Module V1.0
ACG Identification Technologies GmbH 46
7.4.3.9.2 Write port
If user port is used as an output a 1k Ω resistor has to be integrated into the wire.
Otherwise the reader device can be damaged.
Port state Description
00 Sets USER port to low
01 Sets USER port to high
Figure 7-13: Write User port settings
7.4.3.10 Read block
This command reads a data block on a card. Size of returned data depends on the
used tag. The block address range depends on the present tag.
Command
Command Data
'r' Block address (1 byte), valid range 00h – 40h
'rb' Block address (1 byte)
Answer
Answer Description
Data block data (depends on tag type)
'F' Error: read failure
'N' Error: No tag in field
'O' Error: Operation mode failure
Example
Command Description
rb05 Reads block 05.