Bus Fault s7-300

soulmate

Member
S
Join Date
Aug 2011
Location
Cairo
Posts
20
Dear friends;
I am a beginner in simatic and I tried to make a small project to know how a CPU works with an I/O module through profibus …. I had used a 315-2DP CPU ( 2AG10-0AB0) and ET200M (153-1AA03-OXB0) but when the project starts it gives me a bus fault ( on CPU I have SF and BF flashes – in ET200M I have BF on) ….. I've tried to fix the problem so changed the cable then connectors then CPU then ET200 and made all possible things but still have the same problem …. I've searched through this forum and found many threads that are similar to this and made all advices but all that were useless ….. I'll upload a copy from the project and the buffer diagnostic report so please if there is anybody has any idea to help me …. Please ….. I am so frustrated and tired cause of this thing
 
Cannot open your project.
Open the Properties of the Root Project, then activate the "Can be opened under any Windows language settings (language neutral)".
Then post again.
 
Managed to open the project with the aid from the tip of Rafal Walckzak in this thread:
http://www.plctalk.net/qanda/showthread.php?t=65545

There is nothing wrong to see in the project.

HW Config really matches the modules installed in bot CPU rack and ET200M rack ?
U-connector between ET200M modules installed ?
DP station address set to "1" in the ET200M ?
Bus cable goes into the connectors at the arrow going INTO the connector ?
Termination at both end connectors set to "ON" ?
 
JesperMP said:
Managed to open the project with the aid from the tip of Rafal Walckzak in this thread:
http://www.plctalk.net/qanda/showthread.php?t=65545

There is nothing wrong to see in the project.

HW Config really matches the modules installed in bot CPU rack and ET200M rack ?
U-connector between ET200M modules installed ?
DP station address set to "1" in the ET200M ?
Bus cable goes into the connectors at the arrow going INTO the connector ?
Termination at both end connectors set to "ON" ?
Click to expand...

[FONT=&quot] [/FONT]
Thank you very much Mr Jesper
I appreciate your response very much, proud to talk to you …. I had read many of your threads… and make big use of them….. I've checked all what you mentioned above many times but the fault still happens ….. I want to know if there is any other suggestion please[FONT=&quot][/FONT]
 
You have downloaded the HW config to the CPU ?
Bus cable goes into "X2" on the 315-2DP ?

The diagnostics buffer does not really say anything, as if it is not the last one after you downloaded the HW config and swithed to RUN mode.

Add the error OBs (OPB82, OB85, OB86, OB122) to the program, to allow the CPU to go to RUN even if there is hardware fault somewhere.
 
sorry I didn't know how to add them .... I'll search how to add them then I'll do it tomorrow .... I've been working since 11 hours and so tired... thank you .... I'll come back tomorow with the result
 
I had added the OB's but didn't know if they worked or not .... the fault still happen and the CPU in the run mode ( it is in the run mode from the beginning)
 
I cannot pinpoint the error.
You have already done what was suggested, and changed cables and connectors.
It can be a defective CPU or ET200 IM. Can you replace with other parts ?
 

Similar Topics

H
Siemens S7-300 Bus Fault
Can anybody tell me if there is a way to stop my PLC going into halt when I get a bus fault?
Replies
5
Views
8,088
HarleyRay0
H
J
BUS FAULT in S7300 PLC
Hi All, I want to know the steps to create BUS Fault in S7 300 PLC. I have profibus MPI Cable connected for communication to the PLC. Anyone have...
Replies
2
Views
3,235
Jagdish_Siemens
J
J
How to have Bus Fault in S7 300 PLC
Dear All, I have a S7 300 (CPU 315-2DP) plc. For doing testing, I would like simulate a manual bus fault but it is not coming up. The Bus Fault...
Replies
1
Views
6,388
halburgepramod
H
Q
1734 ACNR - PointBus Status Fault
Hi All, We are receiving the PointBus Status Fault (led is flashing red), whereas all the other status leds are solid green. Just to eliminate...
Replies
11
Views
883
ASF
A
M
Servo drive fault s39 bus power leakage
All the servo guys out there looking for a little help? I am having issues with a Kinetix 5500 keeps giving me S39 BUS POWER LEAKAGE FAULT. Does...
Replies
1
Views
1,935
ciupa
C
Back
Top Bottom