General Structure Of The Instructions - Siemens SIMATIC Ident Function Manual

Configuring the instructions

4.3 General structure of the instructions

4.3 General structure of the instructions
Form of the instruction as an example
The following graphic shows an example of a instruction with input and output
parameters as they exist in the same way in all instructions.
Figure 4-1
Description of the parameters
Table 4- 2
Parameter
Input parameters
EXECUTE
HW_CONNECT
MSG_READ
MSG_WRITE
STATUS_WORD
CONTROL_WORD
16
Example instructions
Description of the input and output parameters
Description
There must be a positive edge at this input before the instruction
executes the command.
Global parameter of the type "IID_HW_CONNECT" to address the
channel/reader and to synchronize the instructions. This parame-
ter is located in the variables of the type "IID_DATA_*".
"HW_CONNECT" must always be transferred to the instructions to
address the relevant channel/reader.
Message variable for communication between controller and
CM/reader
Message variable for communication between controller and
CM/reader
Cyclic status word which is sent from the CM/reader to the con-
troller.
Cyclic control word which is sent from the controller to the
CM/reader.
Ident profile, Add-on instruction for Rockwell systems
Function Manual, 07/2020, C79000-G8976-C410-04