How to make the measurement and get it on the Ethernet.

Use a voltage alarm module Model 811A (single) or 812A (dual) alarm module to monitor the voltage from the batteries. Set the trip alarm for the mechanical relay based on DC voltage.

The trip alarm contacts are wired to the 983EN -4012 Ethernet Modbus (TCP/IP) discrete input.

The alarm can be set for latching (physically reset) or automatic reset, thus, if the voltage level returns to an non-alarm state it resets automatically. When the alarm energizes it is read as an input to the 983 and it changes the (Modbus TCP/IP) state from a 0 to 1 and if polled by software it sends the state of change from its register to a master host DCS or PC/PLC. It is obvious the Master device must be able to communicate Ethernet Modbus TCP/IP.

Communication hardware ( Ethernet Topology Ring) consists of Ethernet switches to plug in the module to hook up to; Cu 100meter cable, Multimode F.O -2 km distance, Single Mode F.O -30km distance or WI-FI radios at 900Mhz or 2.4Ghz.

There are other methods i2o or mirroring with Modbus TCP/IP. This method (i20) converts the 983EN to a master device. It sends the change of state every one second to another (Slave ) 983EN and this 983 is hardwired into an mechanical or ss relay which is wired into your host or master. This used when the host or master cannot communicate via Ethernet Modbus TCP/IP and has hard wired discrete inputs.

If you set the polling rate from the Master to request data from the 983 tied to the 811A at one second it would update as the previous example. However you could set a faster time frame (based on your host computer).

Email notification: You will need a software interface package (third party) that collects the data via Ethernet Modbus (TCP/IP) and creates the E-mail message.