2014-
02
58
Commands
7.11
System Commands
Change tag (CT)
Command:
Response:
This command tells the read/write head on the relevant channel which tag type to communicate
with. This setting is stored in the non-volatile memory on the unit.
Supported Tag Types
Byte
Type
Bit no.
7
6
5
4
3
2
1
0
Byte 0*
Telegram length, high byte
0
0
0
0
0
0
0
0
Byte 1*
Telegram length, low byte
0
0
0
0
0
1
1
0
Byte 2
Command code (04h)
0
0
0
0
0
1
0
0
Byte 3
Reserved/Channel/Toggle bit
0
0
0
0
<Channel>
<T>
Byte 4
Tag type in ASCII
<TagType> (high byte)
Byte 5
Tag type in ASCII
<TagType> (low byte)
Byte
Type
Bit no.
7
6
5
4
3
2
1
0
Byte 0*
Telegram length, high byte
0
0
0
0
0
0
0
0
Byte 1*
Telegram length, low byte
0
0
0
0
0
1
1
0
Byte 2
Command code (04h)
0
0
0
0
0
1
0
0
Byte 3
Reserved/Channel/Toggle bit
0
0
0
0
<Channel>
<T>
Byte 4
Status
<Status>
Byte 5
Reply counter
<ReplyCounter>
Table 7.8
* this byte is only used with the TCP/IP and MODBUS TCP/IP protocol.
Tag type
P+F desig-
nation
Chip type
Access
Writable
memory
[bytes]
Read only
code
length
[byte]
Frequency
range
High
byte
Low
byte
'0'
'2'
IPC02
Unique, EM4102 (EM
microelectronic)
Read only code
5
5
125 kHz
'0'
'3'
IPC03
EM4450 (EM
microelectronic), Titan
Read/write read
only code
116
4
125 kHz
'1'
'1'
IPC11
Q5 (Sokymat)
Read/write
5
-
125 kHz
'1'
'2'
IPC12
P+F FRAM
Read/write read
only code
8k
4
125 kHz
'2'
'0'
IQC20
1)
All ISO 15693 compliant
read/write tags
Read/write read
only code
8
8
13.56 MHz
'2'
'1'
IQC21
I-Code SLI (NXP)
Read/write read
only code
112
8
13.56 MHz
'2'
'2'
IQC22
Tag-it HF-I Plus (Texas
Instruments)
Read/write read
only code
250
8
13.56 MHz
'2'
'3'
IQC23
my-D SRF55V02P
(Infinion)
Read/write read
only code
224
8
13.56 MHz
