2014-
02
78
Commands
Single write configuration (SC)
Command:
Response:
The R/W head makes exactly one attempt to write a word to the configuration range
("Protection Word" or "Control Word") from the address <ConfAddr>.
The password mode must be active so that the R/W head can write to the configuration range.
If the password mode is deactivated, every data word outside of the write-protected range can
be written to. If you would like to modify the write-protected range, you must modify the
"Protection Word" accordingly.
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
0
Byte 2
Command code (12h)
0
0
0
1
0
0
1
0
Byte 3
Reserved/Channel/Toggle bit
0
0
0
0
<Channel>
<T>
Byte 4
Reserved
0
0
0
0
0
0
0
0
Byte 5
Address in the configuration range
<ConfAddr>
Byte 6
Data 00h ... FFh
<Data byte 3>
Byte 7
Data 00h ... FFh
<Data byte 2>
Byte 8
Data 00h ... FFh
<Data byte 1>
Byte 9
Data 00h ... FFh
<Data byte 0>
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 (12h)
0
0
0
1
0
0
1
0
Byte 3
Reserved/Channel/Toggle bit
0
0
0
0
<Channel>
<T>
Byte 4
Status
<Status>
Byte 5
Reply counter
<ReplyCounter>
Table 7.24
* this byte is only used with the TCP/IP and MODBUS TCP/IP protocol.
