HID Global Corporation 5553 Manuale Utente
1508-USM-00-0-04
HF Multi ISO RFID Reader User Manual, Firmware V1.4
2.3.1.2
Continuous Read
The reader device reads and displays serial numbers continuously while one or more tags remain
in the field. This command stops if any character is sent to the reader module. The reader module
returns the character ‘S’ (53h).
in the field. This command stops if any character is sent to the reader module. The reader module
returns the character ‘S’ (53h).
The reader supports different tag types at the same time. To increase the reading performance
switch to a single tag mode. If more than one tag of the same type should be detected at the
same time, the Multitag flag must be activated. The response data length depends on the tag
type.
switch to a single tag mode. If more than one tag of the same type should be detected at the
same time, the Multitag flag must be activated. The response data length depends on the tag
type.
Command
Command
Data
'c' None
Answer
Answer
Description
Data
Serial number (n bytes)
'N'
Error: No Tag in the field (only binary protocol)
2.3.1.2.1
Multitag continuous read mode
If the Multitag flag is set in the Protocol Configuration (PCON) register the reader reads multiple
tags continuously.
tags continuously.
2.3.1.2.2
Auto start
The continuous read mode is started automatically in ASCII mode. The auto start flag must be set
in the PCON register.
in the PCON register.
2.3.1.2.3
Noisy Environment
If the Noisy Environment flag is set, the continuous read mode can only be aborted with the '.'
character.
character.
This is only valid in ASCII mode.
2.3.1.2.4
Binary mode
This command is fully supported in binary protocol mode except the test continuous read
command and the noisy environment flag.
command and the noisy environment flag.
Do not use this command on bus system environment in binary mode, because the continuous
read mode will take possession of the bus system.
read mode will take possession of the bus system.
2.3.1.2.5
Simple access control applications
Serial numbers are always sent plain. Data encryption is activated after a successful login.
For simple access control applications the use read-only blocks for the identification of the tag is
recommended.
recommended.
Reading any block (even the manufacturer block) of the transponder will increase your security.
Page 40 of 144
August 2010
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