12/21/2015 8:30 PM | |
Joined: 9/27/2006 Last visit: 9/21/2024 Posts: 12282 Rating: (2684)
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Hello ldir; Look at the technical data for the equipment you have, and that cause a problem:
- S7-400 CPU : 6ES7414-3XJ00-0AB0
https://support.industry.siemens.com/cs/ww/en/pv/6ES7414-3XJ00-0AB0/pi
- Flash memory card : 6ES7951-0KG50-0AA0 : S7-300 Flash card, 128 kB
https://support.industry.siemens.com/cs/ww/en/pv/6ES7951-0KG00-0AA0/pi
Basically you have a Flash EEprom card in the CPU, but it is a card designed only for S7-300 CPUs.
The S7-400 memory cards start with part numbers 6ES7952-... See the following FAQ for more details:
Which memory cards can you use with a S7-400 CPU?
https://support.industry.siemens.com/cs/ww/en/view/73159687
With the correct type of Flash card containing a valid program for your S7-400 CPU, you would not need batteries, and the CPU would load the program on startup. But as your situation shows, you do not have the correct hardware. Hope this helps, Daniel Chartier EDIT: If this is only for test purposes, I can suggest that you remove the memory card inserted in the CPU. The memory card (either RAM or Flash) supports the load memory of the CPU, but these models have 256 kB of RAM (load memory) onboard that you will have access to when the Flash card is absent. For details, see the Technical Data tab of the CPU link proposed earlier. That will allow you to configure and download a small program to the CPU, and eventually execute it. But it is in RAM, so you will need at least one active battery in the power supply connectors if you want to remove power to the CPU, or you will lose your efforts. D.C. |
Last edited by: dchartier at: 12/21/2015 8:31:46 PMLast edited by: dchartier at: 12/21/2015 8:39:06 PM |
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12/22/2015 7:01 AM | |
Posts: 163 Rating: (2) |
Hello, Even though I removed the MMC, but still the same issue. ? thanks |
12/22/2015 7:56 PM | |
Posts: 163 Rating: (2) |
Hi, the situation is the same as before as depicted below. I will try to communicate with a PC and see what happens. |
12/22/2015 9:06 PM | ||||||||||
Joined: 9/27/2006 Last visit: 9/21/2024 Posts: 12282 Rating: (2684)
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Hello ldir; I hope you do have access to the CPU and the diagnostic buffer, this is the best way to determine the source of your problems.
In the meantime, you have 2 diagnostic LEDs active on the CPU: STOP (with RUN not active) and ExtF. Based on the S7-400 CPU specifications manual: https://support.industry.siemens.com/cs/ww/en/view/53385241 , pages 24-27 here is what can be proposed as a source of your problem.
I hope this helps you circumscribe the error on the CPU. Hope this helps, Daniel Chartier
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Last edited by: dchartier at: 12/22/2015 9:25:22 PM |
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