Siemens SIMATIC MV440 Operating Instructions Manual page 256

Process interfacing via an automation system (PLC, PC)
10.3 Control with FB 45 and Ident profile
DISA bit
Command: Set DISA bit
The command data to be "written" in the WRITE command simply contains the command
identifier "Set DISA bit".
If the DISA bit of the reader is set, the command is acknowledged positively. If the DISA bit
is already set, it remains set.
The WRITE command must specify a length of 0x1 ("MOBY_CMD".length or
"PIB_COMMAND".Length = 0x1), otherwise a negative response will be sent.
Table 10- 19 Moby_CMD
Command
Table 10- 20 PIB_COMMAND
Parameter
CMD
OffsetBuffer
UID
Length
StartAddress
Table 10- 21 Command data area (FB45: Data DB, RFID standard profile: TXBUF or RXBUF)
Address
0x0000
254
Sub_
[hex] Command
[hex]
01 -
Length Address_
[dez] MDS [hex]
1 0
Value
0x71
0x00
0x00
0x01
0x00
Value
0x05
DAT_DB_number DAT_DB_address
[dez]
Number of the Pointer to the start
data DB (for example
48)
Pointer to the user data to be sent to the
reader.
Meaning
Command identifier
"Set DISA bit".
SIMATIC MV420 / SIMATIC MV440
Operating Instructions, 04/2013, A5E02371045-06
[dez]
word
(for example 0)