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I have use 3 diferent configuratións:
1. Wonderware DDEserver for 1748-ktx of AllenBradley. It´s a good solution for me, but 1748-ktx it´s an ISA bus card and I have problems to
buy PCs with ISA slots.
2. WWLinx + RSLinx + 1748-pktx. It´s a solution for the ISA bus slot problem because PKTX is and PCI card. The problem of this solution is the price, too much licenses: InTouch with IO, RSLinx and the fisical card PKTX.
3. SST 5136-SD-PCI card + SST OPCserver. It´s teoricaly the best solution. PCI interface card and not too much licenses. The problem here it´s with the OPCLink of wonderware. I´m not sure about the correct configuration of this soft and I have problems using IOsetItem script function and writing values to IOtagname. Concretly the writing problem it´s that when I write and new value in a tag, this tag keps first the new value, tem reads the old one from the PLC and finly changes to the new one that I have writed. I have to define high Update intervals in the OPCLink or to define a lot of topics with very litle number of tags in each one.
Do anybody nows any better solution?
Thamks a lot.
1. Wonderware DDEserver for 1748-ktx of AllenBradley. It´s a good solution for me, but 1748-ktx it´s an ISA bus card and I have problems to
buy PCs with ISA slots.
2. WWLinx + RSLinx + 1748-pktx. It´s a solution for the ISA bus slot problem because PKTX is and PCI card. The problem of this solution is the price, too much licenses: InTouch with IO, RSLinx and the fisical card PKTX.
3. SST 5136-SD-PCI card + SST OPCserver. It´s teoricaly the best solution. PCI interface card and not too much licenses. The problem here it´s with the OPCLink of wonderware. I´m not sure about the correct configuration of this soft and I have problems using IOsetItem script function and writing values to IOtagname. Concretly the writing problem it´s that when I write and new value in a tag, this tag keps first the new value, tem reads the old one from the PLC and finly changes to the new one that I have writed. I have to define high Update intervals in the OPCLink or to define a lot of topics with very litle number of tags in each one.
Do anybody nows any better solution?
Thamks a lot.