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Rod_Hackney

PLC 3 Communications

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We have a PLC 3 that controls part of a process. We are planning on upgrading this process area but it will not be for a few years. WE have immediate need to integrate a SLC 5/05 PLC with some of its information into the PLC 3. The PLC 3 has a Data Highway card in it but if I remember correctly, this is the original DH not DH+. Other than hard wiring another SLC5/05 near the PLC 3 and hardwiring the outputs to the PLC 3 does anyone know of a viable communications option for this?

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1770-KF2 converts from DF1 to Data Highway or Data Highway Plus 1771-KE converts from DF1 to Data Highway 1785-KE converts from DF1 to Data Highway Plus I'd go the 1771-KE route. If expense is an issue, they are available on the aftermarket, caveat emptor. In recent projects I have taken 1771-KE's from PLC-3 systems being de-commissioned and used them as bridges for the systems we are converting in stages.

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Which Cat No. of Data hiway module do you have? the 1775-SR5 supports both DH & DH+

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