Command Parameters - Siemens SIMATIC Ident Function Manual

Parameterizing
3.2 RFID commands
Table 3- 5 UDT 21 "MOBY CMD_d"
Address Name
0.0
+0.0 command
+1.0 sub_command
+2.0 length
+4.0 address_MDS
+6.0 DAT_DB_number
+8.0 DAT_DB_address
=10.0
* For transponder memory > 32 KB, UDT 70 must be used (data type WORD instead of INT).
)
The "length" value is then specified as a hexadecimal value.
The "actual value" of the variables can be modified using the editor in the data view of the
DB or in the STEP 7 application program.
Please note that the actual values can only be changed if no command is active (ready = 1).
3.2.1

Command parameters

Overview of commands
Table 3- 6
* Chained commands are not supported by all readers or CMs. You should also note
)
the information in the relevant system manual.
30
Type
STRUCT
BYTE
BYTE
)
INT *
WORD
INT
)
INT *
END_STRUCT
Overview of commands
Command [hex]
normal chained*
)
01 41
02 42
03 43
04 44
08 48
0A 4A
0B 4B
Initial value Comment
B#16#2 MDS: 2 = read, 1 = write
B#16#0 INIT = bit pattern; END, SET, MDS, SLG=mode
1 Amount of data to be written/read in bytes
W#16#0 Start address on transponder, memory size
for INIT; date for transponder
48 Number of DAT_DB, data for transponder
0 Pointer to start word in DAT_DB
Syntax
WRITE Write data to transponder
READ Read data from transponder
INIT Initialize transponder
SLG STATUS Query reader status
END Terminate communication with the transponder
SET-ANT Antenna on/off
MDS-STATUS Query transponder status
Function Manual, 07/2012, J31069-D0166-U001-A4-7618
Command
Description
FB 45 for MOBY U, MOBY D, RF200, RF300