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Configuration parameters (CFG)
The configuration memory of the reader is organized in 16 byte long configuration blocks.
These consist of 14 bytes of configuration parameters and a 2 byte long CRC16 checksum.
Each of the configuration blocks has a number (CFG0...CFGn).
Table 5- 1
Structure of the configuration blocks in the configuration memory and EEPROM of the reader (CFG)
Byte
0
1
Content
The parameters are stored at two different locations within the configuration memory:
● RAM of the reader
● Backup EEPROM (for storing the parameters when the device is turned off)
With the value of the parameter CFG-ADR that is described in the section "Protocols for the
configuration of the reader (Page 43)", you can address the relevant location in the
configuration memory.
Name
Description
CFG-ADR •
CFGn: Memory address of the required configuration block
LOC: Position of the configuration block
•
MODE: specifies whether one or all configuration blocks are addressed
•
Bit
Function
The configuration blocks in the EEPROM are protected by a 16-bit CRC checksum. These checksums are
checked each time the reader is reset. If an incorrect checksum is discovered, the reader changes to an error
status "EE-Init mode" and resets the incorrect configuration block to default values.
If the EE-Init mode is activated, the LEDs PWR/PRE (green) and ERR (red) flash alternately. The reader re-
sponds to external commands with the status "0x10 EEPROM error". You can exit the EE-Init mode by reset-
ting again (cold restart or "[0x64] System Reset" command). When the checksum of all data sets is then
correct, the reader changes to the configured operating mode.
Byte
Content
RF290R
Configuration Manual, 09/2014, C79000-G8976-C377-01
2
3
4
5
7
6
LOC
0
relates to RAM
Changes to this pa-
Changes to this pa-
rameter take effect
rameter take effect
immediately after writ-
only after writ-
ing or storing this con-
ing/storing this config-
figuration block in
uration block in
RAM.
EEPROM and reset-
ting the reader.
6
7
8
PARAMETER
(RAM / EEPROM)
1)
5
4
MODE
1
relates to EEPROM
These bits or bytes are
reserved for future
expansions or for
internal test and manu-
facturing purposes.
They must not be
changed since this can
cause incorrect opera-
tion of the reader.
9
10
11
12
1)
3
2
2
reserved
5
13
14
15
CRC 16
1
0
... n
...
...
21
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