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between a pc and a siemens s7. it's not hard to get it running, but it's getting hard to make it faster than 100millisecs per packet. the only way out seems to be a dll shipped by siemens. but all those functions need pointer like HWND - types. what to do? cheers mario gansen it is not possible to use the siemens opc - server, because it doesn't allow update rates smaller than 100 msecs.
between a pc and a siemens s7. it's not hard to get it running, but it's getting hard to make it faster than 100millisecs per packet. the only way out seems to be a dll shipped by siemens. but all those functions need pointer like HWND - types. what to do?I have no experience with your Siemans s7 but i have used industrial ethernet I/O and refreshed it sub 50mS rates . I used TCP/IP modules but re-used the same refnum without closing the TCP/IP session. If you are not already doing that, I hope it helps .
"mario gansen" wrote in message news:101-506500000008000000E6140000-982303670000@quiq.com... hi, i do have to set up a industrial ethernet connectíon between a pc and a siemens s7. it's not hard to get it running, but it's getting hard to make it faster than 100millisecs per packet. the only way out seems to be a dll shipped by siemens. but all those functions need pointer like HWND - types. what to do? cheers mario gansen
it is not possible to use the siemens opc - server, because it doesn't allow update rate s smaller than 100 msecs.
