Rsview

[Guest Nick]

Can anyone tell me are there any advantages are of using OPC instead of Direct Driver when using RSView to display ASCII strings from a SLC 5/04. Thanks Nick

[Chris Elston 78]

I would say it depends on how you got your rig connected. If you are connected "direct" from PC to PLC, then might as well use direct drivers "DH+ or DF1" etc...if you are trying to access the PLC from across the plant ethernet, you might not have any choice but use OPC. Speed wise, you limited to your connection. So if you are trying to talk OPC on an AB protocol, there's not really a speed advantage that I know of.