ACG HF Multi ISO RFID Reader - RFID Webshop
ACG HF Multi ISO RFID Reader - RFID Webshop
ACG HF Multi ISO RFID Reader - RFID Webshop
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<strong>ACG</strong> <strong>HF</strong> <strong>Multi</strong> <strong>ISO</strong> <strong>RFID</strong> <strong>Reader</strong> V1.0<br />
12.4.3.15.2 Write port<br />
If user port is used as an output, a 1k resistor has to be integrated into the wire.<br />
Otherwise the reader device can be damaged.<br />
Port state Description<br />
00h Sets USER port to low<br />
01h Sets USER port to high<br />
02h 7Fh RFU<br />
80h - FFh Sends a serial data frame and checks the received frame<br />
Figure 12-27: Write User port settings<br />
Sending a Data Frame<br />
If the highest bit (MSB) is set in the State of the User Port, the command sends a<br />
serial data frame out the USER port.<br />
The frame includes a start bit, 8 data bits, parity bit and a stop bit.<br />
Transmit<br />
Frame<br />
Low<br />
Low<br />
Description<br />
Start bit<br />
RFU<br />
Data Bit 6 State of the User Port Bit 6<br />
Data Bit 5 State of the User Port Bit 5<br />
Data Bit 4 State of the User Port Bit 4<br />
Data Bit 3 State of the User Port Bit 3<br />
Data Bit 2 State of the User Port Bit 2<br />
Data Bit 1 State of the User Port Bit 1<br />
Data Bit 0 State of the User Port Bit 0<br />
Parity Bit<br />
High<br />
Even Parity Bit<br />
Stop Bit<br />
Figure 12-28: Sending Serial Data Frame<br />
After 2ms Guard Time the answer should be received on the User Port otherwise an<br />
error is returned.<br />
<strong>ACG</strong> Identification Technologies GmbH 81
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