Hi everyone,
Just wanted to get some thoughts on the best solution for ControlLogix IO. I've just done a comparison of 1794 vs 1734 vs 1756 IO pricing and they're reasonably comparable. In summary:
For Ethernet communications:
- Point IO has the cheapest adapters, followed by Flex then 1756
For Digital inputs:
- 1756 is the cheapest followed by Point then Flex
For Digital outputs:
- Point IO is the cheapest followed by Fex then 1756
For Analog inputs:
- 1756 is the cheapest (by a good margin) followed by Flex then Point
For Analog outputs:
- Point is the cheapest followed by Flex then 1756
Looking at a remote IO 'rack', well it's difficult to see who comes out on top in price but I believe it would be Point given the low cost of communications adapters and terminal bases, and no cost for the rack or power supply.
Prices are list prices off Integrated Architecture Builder.
Looking at the cost of installation, it all comes down to ease of termination. I believe Flex comes out on top here with the bulky bases, 1756 would be next if you use the premade cable looms and terminal blocks (adds to cost but saves on terminations), Point is last with small RTBs.
I think that it would end up boiling down to personal preference at this point, as well as what prices you can get sellers down to.
Has anyone got any opinions? I'm looking at just basic IO here; no RTD modules/etc, no isolated channels, no diagnostic feedback, just a cheap and basic remote IO rack.
I'm just trying to work out for a new medium sized process plant with ControlLogix (so a significant number of IO with no special requirements), should I use 1756, 1734, or 1794 IO with my 1756-L7X CPU.
Thanks!
Just wanted to get some thoughts on the best solution for ControlLogix IO. I've just done a comparison of 1794 vs 1734 vs 1756 IO pricing and they're reasonably comparable. In summary:
For Ethernet communications:
- Point IO has the cheapest adapters, followed by Flex then 1756
For Digital inputs:
- 1756 is the cheapest followed by Point then Flex
For Digital outputs:
- Point IO is the cheapest followed by Fex then 1756
For Analog inputs:
- 1756 is the cheapest (by a good margin) followed by Flex then Point
For Analog outputs:
- Point is the cheapest followed by Flex then 1756
Looking at a remote IO 'rack', well it's difficult to see who comes out on top in price but I believe it would be Point given the low cost of communications adapters and terminal bases, and no cost for the rack or power supply.
Prices are list prices off Integrated Architecture Builder.
Looking at the cost of installation, it all comes down to ease of termination. I believe Flex comes out on top here with the bulky bases, 1756 would be next if you use the premade cable looms and terminal blocks (adds to cost but saves on terminations), Point is last with small RTBs.
I think that it would end up boiling down to personal preference at this point, as well as what prices you can get sellers down to.
Has anyone got any opinions? I'm looking at just basic IO here; no RTD modules/etc, no isolated channels, no diagnostic feedback, just a cheap and basic remote IO rack.
I'm just trying to work out for a new medium sized process plant with ControlLogix (so a significant number of IO with no special requirements), should I use 1756, 1734, or 1794 IO with my 1756-L7X CPU.
Thanks!