Parameter Assignment For Starting Up And Restarting; Chaining - Siemens Simatic Ident Function Manual

3.5.4.6

Parameter assignment for starting up and restarting

The communications module and the reader are restarted by setting the "INIT" parameter.
With the parameter, the CM or the reader and the Ident profile are reassigned parameters
and synchronized.
An "INIT" is necessary after
● switching on or restarting the SIMATIC controller (OB 100 / Startup)
● turning on the power supply of the CM/reader
● plugging the reader onto the CM
● interruption in PROFIBUS/PROFINET communication
● An error message by the "STATUS" parameter
3.5.4.7

Chaining

With the Ident profile and the "Advanced" block, it is possible to send chained commands.
Chained commands are sent in their entirety to the reader without waiting for the results of
the first command. This function allows you to execute various transponder commands with
one command start.
With both blocks, you have a command buffer of 100 commands available ("Array [1...n]" of
the "IID_CMD_STRUCT"). In each command structure, there is a "Chained" bit. This bit must
be set for each chained command. In the last chained command, this bit must not be set so
that the block recognizes that the chain has ended.
Note
Chaining function is device-specific
Please check whether or not the Ident device you are using supports chaining.
At the time of publication of this manual, chaining is supported only by the RF61xR/RF68xR
readers and the ASM 456 and RF18xC communications modules.
Overview of the commands
Table 3- 88
Command
PHYSICAL-READ
PHYSICAL-WRITE
READER-STATUS
Ident profile and Ident blocks, standard function for Ident systems
Function Manual, 10/2018, C79000-G8976-C387-04
Overview of the commands with which chaining is possible
Command code
HEX ASCII
0x70 'p'
0x71 'q'
0x74 't'
Setting parameters for blocks
3.5 Programming the Ident profile
Description
Reads data from a transponder / optical reader sys-
tem by specifying the physical start address, the
length and the password.
Writes data to a transponder / optical reader system
by specifying the physical start address, the length
and the password.
Reads out the status of a communications module.
This command must not be the last command within
the chain.
105