2014-
02
66
Commands
If a trigger command has assigned channel '0' (000b) for <Identchannel>, this change in the
status of the trigger sensor (status 0x00 and 0x05) is transmitted to the controller via the sensor
channel
This function can be used to monitor functions via the controller if trigger signals and reading of
data cannot occur simultaneously for application related reasons. Correlation must take place
in the controller.
7.8.2
Standard read/write commands
single read fixcode (SF)
Command:
Response:
The R/W head makes only one attempt to read a read only code.
The length of the read only code that is output depends on the tag type. See table "Supported
Tag Types" on page 60.
Byte
Contents
Bit no.
7
6
5
4
3
2
1
0
Byte 0
1)
Telegram length, high byte
0
0
0
0
0
0
0
0
Byte 1
1)
Telegram length, low byte
0
0
0
0
0
1
0
0
Byte 2
Command code (01h)
0
0
0
0
0
0
0
1
Byte 3
Reserved/Channel/Toggle bit
0
0
0
0
<Channel>
<T>
1)
This byte is only used with the TCP/IP and MODBUS TCP/IP protocol.
Byte
Contents
Bit no.
7
6
5
4
3
2
1
0
Byte 0
1)
Telegram length, high byte
0
0
0
0
0
0
0
0
Byte 1
1)
Telegram length, low byte
0
0
0
0
1
0
1
1
2)
Byte 2
Command code (01h)
0
0
0
0
0
0
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
3)
ID code 00h ... FFh
<ID-Code>
1)
This byte is only used with the TCP/IP and MODBUS TCP/IP protocol.
2)
The telegram length depends on the read only code length of the tag.
3)
N = <FixLen> + 5; Ethernet/IP: N = <FixLen> + 3
