User's Manual

ACG HF Multi ISO RFID Reader V1.0
ACG Identification Technologies GmbH 81
12.4.3.15 Read/Write user port
This command sets or reads the state of the user port (pin 14) of the OEM reader
device. The port is set either as output or as input.
Command
Command Data
'pr' None
'pw' State of user port (1 Byte)
Answer
Answer Description
Data State of user port (1 Byte)
'C' Error: Error correction fails
'F' Error: Transmission Error / No answer received
Example
Command Description
pr Reads user port
pw01 Sets user port state to high
12.4.3.15.1 Read port
The port read command returns the current state of the USER port.
Port state Description
00h USER port is low
01h USER port is high
Figure 12-26: Read USER port return values