Amplicon's new ioLogik W5340 Active Ethernet I/O module uses quad band GPRS for communication over the mobile telephone network from anywhere in the world. It can monitor both analogue and digital signals from instruments and switches, whilst control is provided by relays or digital outputs. I/O can be controlled remotely by any SCADA system using Modbus TCP or OPC.
The W5340 uses Active messaging to send alarms or other messages when water levels or similar limits are exceeded. “Click ‘n’ Go” logic provides local PLC-like control, which could be particularly useful if and when the local GPRS signal is lost.
The combination of Active remote I/O and a GPRS router in one package saves purchase costs and reduces cabinet size. The product is also able to deal with SIM cards that only have a private static IP address.
Modern cellular networks have a high level of reliability but are not infallible. Because of this, the W5340 has a built in SD card than can store up to 14 days worth of readings should the wireless network fail. Once the link is restored data can continue to be streamed from the unit.