S7 300 series to OPC

kumar satyam · Jan 2, 2017

any special setting in simatic manager for accesssing variables in OPC server??
I want to access variables from plc to PC via ethernet.
Can someone suggest ways..

srikanth_sgsits · Jan 2, 2017

kumar satyam said:
any special setting in simatic manager for accesssing variables in OPC server??
I want to access variables from plc to PC via ethernet.
Can someone suggest ways..

HI Kumar
yes you have to configure simatic station in netpro and use the same settings in station configurator in PC.

-srikanth@Vibrant automations Pvt Ltd

kumar satyam · Jan 3, 2017

Hi Srikant,
Thanks for reply...
i dont have any station configurator . I will be using third party OPC server as Kepware or matrikon. Can u Share some screenshots as i am very new to Siemens Programming. I am using trial version of Simatic Manager

boneless · Jan 3, 2017

Fairly straight forward, I would recommend using one or several DB's to collect all the data. Then use:

bit = x: db1.dbx0.1
int = w: db1.dbw2
dint = d: db1.dbd4
float = d: db1.dbd8

you can also access memory directly, but I am not a big fan of doing that:
M0.0
MW2
MD4

I can recommend kepware, remember you need to get the siemens drivers for those (I would use TCP).

kumar satyam · Jan 3, 2017

Thanks ..
i got it ..
i can access M0.0, MW0
Can i access Whole DB or Structure ?

srikanth_sgsits · Jan 3, 2017

greetings!!

the DB is visible but you need to configure tags individually like word, Double word, real etc...

S7 300 series to OPC

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