Serial Communication Interface

The communication module can be provided with up to two communication channels, depending on the module variant. Channel 1 may either be equipped to connect wire leads or optical fibers and channel 2 is only available to connect wire leads.

For communication interface 1, communication protocols based on IEC 870-5‑103, IEC 60870‑5‑101, MODBUS, DNP 3.0, or Courier can be set.

▪	Transmission rate: 300 to 64000 baud (adjustable).

Communication interface 2 can only be operated with the interface protocol based on IEC 60870-5-103.

▪	Transmission rate: 300 or 57600 baud (adjustable).

Wire Leads

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Per RS 485 or RS 422, 2 kV isolation

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Distance to be bridged

–	Point-to-point connection: max. 1200 m
–	Multipoint connection: max. 100 m

Plastic Fiber Connection

▪	Optical wavelength: typically 660 nm
▪	Optical output: min. -7.5 dBm
▪	Optical sensitivity: min. -20 dBm
▪	Optical input: max. -5 dBm
▪	Distance to be bridged: max. 45 m (Distance to be bridged given for identical optical outputs and inputs at both ends, a system reserve of 3 dB, and typical fiber attenuation)

Glass Fiber Connection G 50/125

▪	Optical wavelength: typically 820 nm
▪	Optical output: min. -19.8 dBm
▪	Optical sensitivity: min. -24 dBm
▪	Optical input: max. -10 dBm
▪	Distance to be bridged: max. 400 m (Distance to be bridged given for identical optical outputs and inputs at both ends, a system reserve of 3 dB, and typical fiber attenuation)

Glass Fiber Connection G 62.5/125

▪	Optical wavelength: typically 820 nm
▪	Optical output: min. -16 dBm
▪	Optical sensitivity: min. -24 dBm
▪	Optical input: max. -10 dBm
▪	Distance to be bridged: max. 1,400 m (Distance to be bridged given for identical optical outputs and inputs at both ends, a system reserve of 3 dB, and typical fiber attenuation)