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We are working on a Control system for the local municipality. They want to control their well houses based on the level in the standpipe. We have the control system worked out. (AB Micrologix PLC's in all locations) What I want to know, is what everyones opinion on how to do the remote communications is. We are looking at three options.
1. Leased line (least favorable) - Its reliable and easy, however it is very expensive over the long term.
2. Wireless Ethernet (Most Favorable) - We have been working with Wireless ethenet links for PC networks for a few months now, and the links seem easy and reliable, however I don't know how well they would work in a control situation. We would install the New AB ethernet modules at each site and it would also give the ability to have a PC port available at each site and to easily do remote programming.
3. Wireless Data - (ie Datalinc, or Esteem)I guess this is the tried and true way of wireless - unlicenced, however its no less expensive then our ethernet solution, and we loose some options. (but maybe with reliability as the bonus)
Please, I am very new to remote data, and would appreciate any help.
Thanks
1. Leased line (least favorable) - Its reliable and easy, however it is very expensive over the long term.
2. Wireless Ethernet (Most Favorable) - We have been working with Wireless ethenet links for PC networks for a few months now, and the links seem easy and reliable, however I don't know how well they would work in a control situation. We would install the New AB ethernet modules at each site and it would also give the ability to have a PC port available at each site and to easily do remote programming.
3. Wireless Data - (ie Datalinc, or Esteem)I guess this is the tried and true way of wireless - unlicenced, however its no less expensive then our ethernet solution, and we loose some options. (but maybe with reliability as the bonus)
Please, I am very new to remote data, and would appreciate any help.
Thanks