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We appreciate your patience as we improve our online experience.
06-11-2007 09:24 AM
06-11-2007 11:41 AM
06-11-2007 12:56 PM
Hi,
Thanks for the link. I have looked into quite a few of these and was wondering if the OPC server is an absolute necessity if I am using Ethernet.
Thanks,
Shameek
06-11-2007 02:17 PM
06-11-2007 09:09 PM
06-12-2007 10:12 AM
I am using a CP-343 communications processor to connect the S7 300 to industrial ethernet. Now can I commnicate directly from Labview to the PLC? I still havent figured out where the OPC server comes in and whether it is an option or a necessity.
Shameek
06-12-2007 11:19 AM
@Shameek wrote:
I am using a CP-343 communications processor to connect the S7 300 to industrial ethernet.
Now can I commnicate directly from Labview to the PLC?
I still havent figured out where the OPC server comes in and whether it is an option or a necessity.
Using OPC is an option.
Siemens has an the add-on ($$) library/FB that includes code for enabling Modbus communication with S7 300 CPUs. I've never used it, but info is here.
<snip>
Our solution
With its MODBUS function block (FB) and the CP343-1 and CP443-1 SIMATIC S7 communications processors, Siemens can supply a proven solution for the integration of SIMATIC automation systems into other system landscapes. This function block enables data to be exchanged easily between MODBUS-compatible devices from different manufacturers and SIMATIC S7 stations from S7-300 and S7-400 systems.
</snip>
06-13-2007 09:17 AM
Hi,
Thanks for your replies. So is this the way to go?
PLC > PC Using Ethernet card and the PLC comm module > OPC server on PC > Labview by Datasocket
Shameek
06-13-2007 09:47 AM
02-07-2008 02:18 PM