Calog Instruments has launched its Wireless Gateways solution for applications that require low data rates and wireless mesh networking across large areas. The system employs Modbus/RTU protocol, simplifying setup and integration with PLCs and offering a variety of communication methods and topologies to suit different needs for small, medium or large networks.
Wireless Gateways can be used to network entire factories or plants and are ideal for a host of monitoring and control applications, including:
* Smart energy/grid.
* Automatic meter readings (AMR).
* Lighting controls.
* Tank monitoring.
* Building automation systems.
* HVAC control.
* Medical devices and laboratories.
Mesh networking capable
Unlike Bluetooth or Wi-Fi devices, Calog’s wireless gateway nodes are connected to each other by multiple pathways. This enables routes to be created between nodes that would otherwise be out of range, allowing the network to extend across wide areas. It also increases the stability of the network since data can be rerouted if any node malfunctions.
The nodes can transmit approximately 80 metres (line of sight) and up to 97 nodes can be connected in a single network (1 base, 64 remotes and 32 sleepers). Connections between nodes are dynamically updated and optimised through sophisticated mesh routing tables. New nodes can be added when needed and will be automatically incorporated into an existing network.
Wireless Pathfinder Base/Remote Unit (WG-PTH)
This dual function unit can be used as either a base or a remote node and is the starting point for setting up a Modbus-to-wireless mesh network.
* Configurable as a Modbus slave device for easy integration with PLCs.
* Optional digital I/O.
* Serial output options include RS-232, RS-485, RS-422 and Ethernet Modbus/RTU.
Wireless Sleepers (WG-SLB & WG-SLR)
Sleepers operate as standalone devices and send data to the base node at user configured intervals. They integrate seamlessly with existing WG mesh networks and enable additional network topologies and functions. The WG-SLB can be powered either by a power supply or long-life lithium batteries and conserves power by sleeping between transmissions. Because of this, it cannot be used as a route point for other nodes. The WG-SLR is powered by a supply and so is constantly online and able to provide routes for other remote nodes and sleepers.
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