Siemens S7-1200 prob

[Griffin]

Hi All,

Wondering if anyone has had a similar problem with a Siemens S7-1200 PLC.
I have a customer with one of these PLCs controlling the temp of some tanks, he now wants to add an extra tank and we are doing the wiring / programming etc.
The customer has no drawings or the original project. :sick:

I have S7 basic TIA portal V11 SP1 installed on my lappy, I have created a new project and it has recognised the PLC and retrieved the configuration data etc.

My problem is when I try to upload the program blocks from the PLC to my laptop the software crashes and the transfer fails.

The original project was written in V10.5

Does anyone know of a way around this, other than installing and older portal version v10.5?

Thanks in advance

G

 

[stef]

Hi Griffin, could it be the memory of the plc is write protected?

 

[Knobhead]

That shouldn’t stop the PLC->PC transfers. But defiantly worth a look at. Different program versions have caught me out in the past, but they are usually backwards compatible.

 

[stef]

Also another god one is a faulty comms lead, had that with an Allen Bradley Slc500 some time ago.

 

[pmac10]

not used 1200 before but on s200 the comms lead has dip switches to select different baud rates for data transfer, might be worth a look?

 

[Griffin]

Thanks all for your input

I have another s7-1200 which I have generated a project from scratch using v11 of the tia portal. This seems to work fine.

So i know the lead is ok. (plus its brand new)

Aparently v11 should be backwards compatable with 10.5

I will keep digging

G

 

[mheyes]

I have had the same problem with a S300 controller. I rang siemens in germany and was told "it is a windows network driver fault" they pointed me to there website where you can download a patch. Its not good when your software crashes infront of a blue chip client :furious3:.

 

[Wazzajnr]

It's not the cable as it's just a standard ethernet cable.

My suspicion would be that the old PLC will be V1.0.x firmware and you are trying to set up for a different firmware in your project.
I have had many sleepless nights from firmware incompatibilities!!!
If you're still having problems, drop me a PM or email and i'll try to see if i can replicate it and solve it for you