Description

IF-96001: RS485 Communication Interface for Nemo 96HD/HD+ Series

The IF-96001 module, when combined with meters from the Nemo 96HD/HD+ series, provides access to all relevant measurement data and configuration parameters via RS485 communication.

RS485 Communication Specifications:

• Isolation: Galvanically insulated from measurement inputs and auxiliary power.
• Standard: RS485 – 3-wire.
• Transmission: Asynchronous serial.
• Protocol: Compatible with JBUS/MODBUS.
• Data Configuration:
  • Bit number: 8
  • Stop bit: 1
  • Response time to requests: ≤ 200ms
  • Maximum devices connectable: 32 (up to 255 with RS485 repeater)
  • Maximum distance from supervisor: 1200m

Programmable Parameters:

• Address range: 1 to 255
• Baud Rate options: 4,800, 9,600, 19,200 or 38,400 bps (38.400 only for Nemo 96HD/HD+)
• Parity: None, Even, Odd
• Modbus message word format options: Big Endian, Little Endian, Swap

Example Message:

• Request: FF 03 03 01 00 02 80 51
• Response (variations):
  • Big Endian: FF 03 04 01 02 03 04 XX YY
  • Little Endian: FF 03 04 04 03 02 01 XX YY
  • Swap: FF 03 04 03 04 01 02 XX YY

Auxiliary Supply:

• Self-consumption: ≤5VA

Insulation (EN61010):

• A.C. voltage test: 2kV, 50Hz for 1 minute.
• Circuits considered: measurement input, auxiliary power, RS485 communication.

Housing:

• Device module with connector for Nemo 96HD/HD+.
• Maximum depth: 81mm (including the module).
• Connections: Screw terminals, accommodating:
  • Rigid cable: max. 4.5mm²
  • Flexible cable: max. 2.4mm²
• Housing material: Self-extinguishing polycarbonate.
• Weight: 30 grams.

Firmware Update:

Using the IF-96001 (RS485) or IF-96002 (RS232) communication module, users can update the firmware version directly in the field with a PC and the necessary software.