Siemens SIMATIC Ident Function Manual page 72

Examples/applications
6.6 Data structure definition
The following shows an extract from a STEP 7 user program. It shows how a large number
of RFID channels can be handled easily using symbolic names. A command is started via
each of the inputs 0.0, 0.1 and 0.3. An edge memory bit is used to prevent the command
from being started several times:
A
AN
A
AN
S
S
AN
R
A
AN
A
AN
S
S
AN
R
A
AN
A
AN
S
S
AN
R
Call
Call
Call
72
MOBY DB.channel[1].ready
MOBY DB.channel[1].error
I 0.0
Edgememorybit_1
MOBY DB.channel[1].command_start
Edgememorybit_1
I 0.0
Edgememorybit_1
MOBY DB.channel[2].ready
MOBY DB.channel[2].error
I 0.1
Edgememorybit_2
MOBY DB.channel[2].command_start
Edgememorybit_2
I 0.1
Edgememorybit_2
MOBY DB.channel[3].ready
MOBY DB.channel[3].error
I 0.3
Edgememorybit_3
MOBY DB.channel[3].command_start
Edgememorybit_3
I 0.3
Edgememorybit_3
"MOBY FB", DB100
Params_DB: = 45
Params_ADDR: = 0
"MOBY FB", DB101
Params_DB: = 45
Params_ADDR: = 70
"MOBY FB", DB102
Params_DB: = 45
Params_ADDR: = 140
// 1st READER
// 2nd READER
// 3rd READER
FB 45 for MOBY U, MOBY D, RF200, RF300
Function Manual, 07/2012, J31069-D0166-U001-A4-7618