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Process interfacing via an automation system (PLC, PC)
9.3 Control with Ident profile
SIMATIC MV500
Operating Instructions, 03/2021, C79000-G8976-C494-05
155
Note
Stable synchronization after error
To be able to guarantee stable synchronization after an error has occurred, we recommend
that you check the "ERROR" bit of the Ident profile after each command has been executed.
If an error occurs, you may need to perform an initialization again. This is achieved by setting
the "INIT" bit.
9.3.1
Assigning parameters to the Ident profile (standard profile V1.19)
A detailed description of the Ident profile can be found in the corresponding function
manual.
The following function modules are required in the STEP 7 project:
•
Ident profile (Ident_Profile)
The Ident profile is a single complex block containing all the commands and functions for
RFID systems and optical reader systems.
•
Ident blocks
The Ident blocks represent a simplified interface of the Ident profile. Each Ident block
contains a single command of the Ident profile.
The "TXBUF" and "RXBUF" data buffers for send and receive data (memory area of the receive
data).
The following input and output parameters have a meaning different from the description in
the function manual of the Ident profile.
Table 9- 3
Assignment of input parameters
Variable
Value/description
INIT
For initializing the CM or to acknowledge a group error of the optical reader. You can
find additional information about acknowledgment of the group error of the optical
reader in the section "Group error (Page 170)" of the online help.
Table 9- 4
Assignment of output parameters
Variable
Value/description
RPTACT
Not supported
TPC
No significance
TP
No significance
UIN0
For a description, refer to the section "Status display of the optical reader (Page 157)".
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