Question:
PSE connect to Siemens PLC via PSDirect Driver,shall I know the reference about this driver?

Answer:
Maybe you can’t find the part number for PSDirect Driver in PSE Ordering tool. But PSE do support this driver, because PSE is based on CitectSCADA Core.
You could order PSE, then once you have the key serial number for the PSE server. You can buy the Driver via Citect supply chain for that key,  you have to mention that you key is a PSE server license.

Released for:Schneider Electric Philippines