S7-300 MPI wiring to a TP370A

walrus_51

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• Mar 23, 2003

• #1

Can anyone help me with a pin-out and wiring diagram to connect an S7-300 cpu MPI port to a TP370A HMI? Siemens UK are out of stock of ready-mades!

 

paraffin power

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• Mar 23, 2003

• #2

MPI is generally 3 to 3 and 8 to 8.
This is what I use, but only on TP170's but it must be the same.

 

walrus_51

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• Mar 23, 2003

• #3

MPI connection

hey thanks - do you also link 5 to 5 using the cable shield then?

 

seppoalanen

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• Mar 23, 2003

• #4

I think it goes from shell to shell ?

 

walrus_51

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• Mar 23, 2003

• #5

Shell to Shell

Are you sure that's not hermit crabs that do that?

hehehehe.. sorry (my bad sense of humour)

What goes from shell to shell?

Walrus.

 

paraffin power

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• Mar 24, 2003

• #6

5 to 5?

Yeah - why not.
Sorry Walrus I don't know.

 

godfrey

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• Mar 24, 2003

• #7

The shield of your cable should be tied to the shell of the DB-9 connector at either end. I use the Siemens connector part # 6ES7-972-0BA41-0XA0. It has a built in terminating resistor switch. Inside the shell is a place where the shield gets crimped.

 

PLucas

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• Mar 24, 2003

• #8

MPI uses the same connectors as Profibus, also the same cable, if you like. As paraffin power stated pins 3 to 3 and 8 to 8.

I have not worked with a TP370, are you sure that you want to use MPI for communications not Profibus DP? Just a thought.

Paul