Siemens DataNET Hub (DNH) user manual Overview, Description, Dual Hub Modules, Ports

	Chapter 1
	Introduction
Overview
Description	The Advance DataNET Hub (DNH) functions as a communication router
	on an Advance Communication System (ACS) network. The DNH is a
	fully redundant unit with dual electronics and with dual power supplies.
	The electronics are certified for use in NEC Division 2 and IEC (Cenelec)
	Zone 2 hazardous locations.

Dual Hub Modules

The dual hub modules (designated DataNET ‘A’ Hub or DataNET ‘B’ Hub) are connected via a serial cross-link cable The wiring of the serial crosslink cable determines which is the ‘A’ Hub.

HUB ‘A’

HUB ‘B’

I/O Ports	The DNH brings flexibility to the ACS with its eight DataNET downlink
	ports, one Ethernet 10BaseT port for interconnecting of DataNET or
	Ethernet segments and one uplink port. With its uplink port, the DNH can
	be used to connect DNHs together to expand the ACS network, or the
	DNH can be used as an interface to an Advance Network Gateway unit.
	The DataNET ports can accept copper and/or fiber optic cables. In Data
	Hiway installations the DNH can use the existing Data Hiway cables.

2000585-001 Introduction • 1