Cellular Routers
Remote Cellular Access
Introducing the GRIDlink RAc
Remote Access Cellular Router
Why use a cell router
It has been the conventional wisdom that if you had only one device that required a wireless Internet connection you should choose a modem. Still, routers are coming down in price while offering more features, so routers are the best choice.
Access a PLC or Building Management System Remotely
The cell router utilizes port forwarding which permits the access of automation devices as if they reside on the LAN in your office. Just configure the cell router with the remote LAN’s IP address and port number. Place it on the remote LAN.
Why Industrial Grade
Consumer grade is enticing because of its low price but will it survive in the long term? Industrial products not only can withstand environmental challenges like temperature and vibration but are made to last for years.
Consumer items have a product life cycle defined in months after which a newer product is introduced to respond to the consumer market. Industrial manufacturers design their products to last for years but also for backward compatibility so the user does not need to re-engineer their application every time they wish to add or replace an installation.
Can multiple PLCs Communicate Remotely using Cell?
Yes, and only 1 router is needed. With a Static IP SIM Card from Verizon, the IP Address can be programmed into a PLC in the home location and READ / WRITE data over Modbus to another PLC or IO in the remote location miles away.
What is WAN failover?
Network WAN failover is where a cell router has a primary and a secondary Internet source. If the primary fails then it switches over to the secondary. It also switches back once the primary recovers.
There can be several types depending on the hardware.
Redundant Cell – If the cell router has 2 SIM cards then it is capable of switching between carriers like Verizon & AT&T if one fails.
Cell Failover – If the local area network has an Internet connection the router detects if the LAN loses its Internet connection and switches to the Cell backhaul from the wireless carrier. This method can significantly reduce the size of the monthly data plan thereby saving money.
Cell routers also have WiFi Access Points which could be used to connect devices and switch over automatically to prevent loss of WiFi.
