Modularity and scalability

[gkasprow]

As it was already posted, I plan to utilise modular construction which can be extended to visually any number of channels.
On the other hand, I want to have in addition:

• Ethernet
• PoE
• GSM module
• LiPo supply option
• High Power Entry
• Temperature sensor with 1 wire and analog sensors entry
• MODBUS RTU interface
• Relay modules. They can be also connected by the MODBUS.
• Digital I/O
• Analog 0-10V I/O

Enclosure is another issue that need to be discussed separately. It would be nice to fit it to standard DIN rail mounted enclosure.

So far I sketched schematics for:

• power meter
• PoE
• Ethernet module
• Hub with WiFi and BT

The modules can be arranged in the following way:

On the left side we have PoE, then Ethernet, hub and 3 power meters.
At the moment the connectors are 4 pin, but I consider adding also I2C wires and one custom wire for remote firmware upgrade. Maybe +12V would be feasible for high power applications.