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4/26/2011 3:19 PM | |
Joined: 12/10/2009 Last visit: 6/15/2022 Posts: 4 Rating: (0) |
Hi! I'm working on a design for Central control center WinCC V7.0 on customer site and several (max. 40) remote S7 315 + CP343-1 Lean automation stations distributed around the country. The customer would like to remotley monitor and controll these autoamtion stations. Since there is no DSL line available at remote locations and a good GSM coverage I decided for GPSR communication channel using MD741-1 EGPRS Gateway . On the control center side there is DSL line available connected to SCALANCE S612. Both GPRS router nad S612 have VPNs configured. On the Siemens support web site I found good example for remote service solution of several S7 300 automation stations and a central Step7 Service station (please find the attachement). In the article there in no reference if such configuration is also possible if you use WinCC 7.0 as SCADA instead of Step7 diagnostic environment. I think that since there are all communication services transparently tunneled via VPN there shouldn't be and difference to if PLC would be connected to local control centre subnet. Can you please confirm that? Do I need Simatic NET OPC server to establish communication to remote PLCs and WinCC in such configuration? Since there is also SINAUT ST7 + TIM communication modules solution I dont know if first mentioned solution would work? Can you please make a breaf comparison betveen SINAUT ST7 + TIM modules and classic VPN tunneling of subnets over internet. ST7 supports additional time stamping .. etc as far as I know... Regards , kodesis Attachment24960449_RemoteAccess_GPRS_DOKU_V21_e.pdf (257 Downloads) |
Last edited by: kodesis at: 4/28/2011 3:30 PM |
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