Scan mode function extension for ASCII readers
3.1 Retentively enabling/disabling scan mode
ASCII protocol for RF200
24
Operating Manual, 11/2016, C79000-G8976-C329-04
3.1
Retentively enabling/disabling scan mode
You can enable scan mode by executing the “SYSTEM” command with the function identifier
“FKT = 0x08”.
Command
Value
Description
SYSTEM
0xAA
Retentively enable scan mode
•
FKT = 0x08
•
PARA = 0x01
Enable scan mode (disable ASCII mode)
Scan mode is enabled using the “SYSTEM” command, as described below:
Table 3- 1
Structure of the “SYSTEM” command
STX
Net data
{optional:
LF}
ETX
Length
Com-
mand
Status
FKT
PARA
Res.
0x02
0x05
0xAA
0x00
0x08
0x01
0x00
0x0A
0x03
The reader is in scan mode as soon as the command has been successfully acknowledged.
Disabling scan mode (enabling ASCII mode)
To disable scan mode, you must set the “Scan mode” parameter to the value “0x02” using
the “Change parameters” frame.
Table 3- 2
Structure of the “Change parameters” frame (binary)
Command parameter
Frame parameter
Byte 1
Byte 2
Byte 3
Byte 1
Byte 2
Byte 3
Byte 4
Command
Status
Count
Tag type
Modulation Subcarrier
Data rate
0x01
0x00
0x15
0x01
0x1E
0x00
0x00
Frame parameter
Byte 5
Byte 6
Byte 7
...
Byte 20
Byte 21
BCC
Operating
mode
Scan mode Para
Para
Para
Para
0x00
0x02
...
1)
...
1)
...
1)
...
1)
If scan mode is disabled with this frame, only the scan mode parameter is evaluated; all
other parameters in this frame are ignored.
You will find more information on this subject as well as parameter descriptions
1)
in the
sections “Communication in scan mode (Page 26)” and ““Change parameters” frame
(Page 29)”.