Instructions
When you create a bit message, a "trigger tag" is created via which a message is triggered later.

PLC ack tag
Via "PLC ack tag" you can acknowledge error messages by way of the controller.
When configuring in WinCC flexible the "trigger address" and the "acknowledge bit" for error messages are assigned automatically.
The address is displayed in the "Trigger address" field or "PLC ack address" field.

Fig. 01

HMI ack tag
The "HMI ack tag" contains the bit that is set by the operator when acknowledging.
When configuring in WinCC flexible the "trigger address" and the "acknowledge bit" for error messages are assigned automatically.
The address is displayed in the "Trigger address" field or "HMI ack address" field.

Fig. 02

MS Excel table "Acknowledge_Allocation_e.xls"
Using the Excel list "Acknowledge_Allocation_e.xls" you can easily specify the "bit addresses" associated with the error messages for

• "Trigger address"
• "PLC ack address"
• "HMI ack address"

in advance. All you have to do is specify the initial address and the length of the array.

Advantage
You do not need to have WinCC flexible open to determine the associated trigger and acknowledge bit for the relevant error number.
This facilitates you work when configuring "Error messages" in the STEP 7 program.

Using the Excel list
 

No.	Using the Excel list
1	Acknowledgment PLC The Excel list includes two worksheets. Acknowledgment PLC Acknowledgment HMI Open the "Acknowledgment PLC" worksheet. Specify the start address of the "Trigger tag". Click the "Start" button. The values are determined. Click the "Delete Range" button before starting a new evaluation run. The previously output table values are deleted. Fig. 03 View of the table with the values determined Fig. 04
2	Acknowledgment HMI Open the "Acknowledgment HMI" worksheet. Specify the start address of the "Trigger tag". Specify the start address of the "HMI ack tag". Click the "Start" button. The values are determined. Click the "Delete Range" button before starting a new evaluation run. The previously output table values are deleted. Fig. 05 View of the table with the values determined Fig. 06

 Attachment 1: Generate_Bitnumber.zip ( 47 KB )  

Keywords
Trigger tag, Acknowledge assignment