Diagnostics With The Cp 341; Diagnostics Functions Of The Cp 341 - Siemens Simatic S7-300 CP 341 User Manual

Diagnostics with the CP 341

8.1

Diagnostics Functions of the CP 341

The diagnostics functions of the CP 341 enable you to quickly localize any errors which
occur. The following diagnostics options are available:
● Diagnostics via Display Elements of the CP 341
● Diagnosis via the STATUS output of the function blocks
● Diagnostics via the diagnostic buffer of the CP 341
● Diagnosis via the diagnostic alarm
Display elements (LEDs)
The display elements show the operating mode or possible error states of the CP 341. The
display elements give you an initial overview of any internal or external errors as well as
interface-specific errors.
STATUS outputs of the FBs
The P_SND_RK and P_RCV_RK function blocks have a STATUS output for error
diagnostics. Reading the STATUS output of the function blocks gives you information on
errors which have occurred during communication. You can interpret the STATUS output in
the user program.
The CP 341 also enters the diagnostic events at the STATUS output in its diagnostic buffer.
Error numbers in the response message frame
If you are working with the RK 512 computer link and an error occurs at the communication
partner in a SEND or FETCH message frame, the communication partner sends a response
message frame with an error number in the 4th byte (see section "Error Numbers in the
Response Message Frame (Page 200)").
Diagnostic buffer of the CP 341
All the CP 341 errors are entered in its diagnostic buffer.
In the same way as with the diagnostic buffer of the CPU, you can also use the STEP 7
information functions on the programming device to display the user-relevant information of
the CP diagnostic buffer (see section "Diagnostics via the diagnostic buffer of the CP 341
(Page 201)").
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
Manual, 09/2008, A5E02191071-01
www.gkbpx.com
该文档是极速PDF编辑器生成，
如果想去掉该提示,请访问并下载：
http://www.jisupdfeditor.com/
8
185