Hi,

so I'm planning a new electric control with the S7-1200 for escalators in my firm.

Now I'm stuck with a big problem tho ...

My boss would like to have two displays on each end of the escalator, showing either a "go through", a "no entrance"-sign or if an error appears, those (or one at at time, circling).

Does anyone have any experience with this?

Or an idea how to realize it?

A Siemens HMI exceeds the planned budget :l

Thanks in advance,

Peter

Hi,

you only need this information: "go through" or "no entrance" ?

You can use i.E. a "green lamp" and a "red lamp" instead a Display, so you only need two outputs...

Regards,

Towome

Sadly not :l
We use that in the old elevators but my boss saw a TFTscreen with the errors shown as text / image on a competitors machine and now he wants it aswell ...

My problem now is, I've never done this so far :l

Hello Peter,

You need for example just to take cheaper TFT HMIs with Modbus TCP/IP protocol support (there are a number on the market) connect both via ordinary Ethernet switch to the embedded Ethernet port on your S7-1200. Than use Modbus TCP Slave standard FB in your PLC program. Thats all. You will get whatever messages/screens you want.

Thanks for the answer Pavel!

You don't happen to have one in mind?

Hello Peter,

Pls check Personal Messages