Commands
2014-
02
65
Enhanced buffered fixcode (EF)
Command:
Response:
The R/W head makes attempts until successful to read a read only code. Only data that
changes is transferred via the interface, i.e. the R/W head transfers data whenever it reads a
new read/write tag or whenever it reads a read/write tag where there was previously no
read/write head within the detection range.
The status '05h' (read command) is output whenever a read/write tag leaves the detection
range.
The length of the read only code that is output depends on the tag type. See table "Supported
Tag Types" on page 58.
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
0
0
Byte 2
Command code (1Dh)
0
0
0
1
1
1
0
1
Byte 3
Reserved/Channel/Toggle bit
0
0
0
0
<Channel>
<T>
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
1
0
1
1
1
Byte 2
Command code (1Dh)
0
0
0
1
1
1
0
1
Byte 3
Reserved/Channel/Toggle bit
0
0
0
0
<Channel>
<T>
Byte 4
Status
<Status>
Byte 5
Reply counter
<ReplyCounter>
Byte 6
ID code 00h ... FFh
<ID code>
Byte 7
ID code 00h ... FFh
<ID code>
...
ID code 00h ... FFh
<ID code>
Byte N
2)
ID code 00h ... FFh
<ID code>
Table 7.14
* this byte is only used with the TCP/IP and MODBUS TCP/IP protocol.
1) The telegram length depends on length of the read only code from the tag.
2) N = <FixLen> + 6; Ethernet/IP: N = <FixLen> + 4
