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N-TRON Switches with the N-View firmware upgrade (part numbers ending in -N) will autocast a small Ethernet packet periodically containing a port-by-port status of the switch. This information includes 5 switch level data points and 41 data points per port. This data is captured by the N-View OPC Server Software and can be displayed by application software running in the same Windows environment with OPC Client capability.

Ease of Use

The N-TRON N-View Software includes the OPC Server and a configuration software utility. The configuration software will automatically search the network for all N-View enabled switches using the unique IEEE MAC addresses to identify each switch. The Switch MAC address can be selected and assigned a 80 character alias name. Meaningful alias names can also be added to all ports using the configuration software. The switch and port alias names can be saved and used by the N-View OPC Server as part of the switch variable names. The alias names can be used to help identify the location of the switch and the areas or equipment connected to the ports.

N-View OPC Data Variables

N-View OPC Server data variables can be accessed by most popular HMI or other application software packages with OPC client capability. These variables can be divided into three general categories.

Status variables indicate the operating condition of the switch or port.

Traffic variables count the number of OCTETS (BYTES) of a specific type of ethernet packet that have passed through a port since the start of the switch.

Error variables count the number of packet errors seen at each port since the start of the switch. N-View OPC variables are presented to the OPC Client application software as string variables. Most HMI software packages can convert these variables to the data type required for display, alarming, and trending during the data import process.

N-View Variable Specifications

N-View Switch Variables

Switch Alias User Assigned Alias Name

Switch Status Online/Offline

Switch Last_Update Seconds since last unicast update

Switch MAC_Address Switch MAC Address

Switch Total_Ports Total number of ports on switch

N-View Port Status Variables

Port Alias User Assigned Port Alias Name

Port Duplex Half / Full / NA

Port Link_Status Up / Down

Port PortId 1 to 24

Port Speed 10 / 100 / NA

Port Usage 0.00 to 100%

Port_Enable/Disable On / Off

N-View Port Traffic Variables

Port pkts_64_octets BYTE Count from Start

Port pkts_65to127_octets BYTE Count from Start

Port pkts_128to255_octets BYTE Count from Start

Port pkts_256to511_octets BYTE Count from Start

Port pkts_512to1023_octets BYTE Count from Start

Port pkts_1024to1522_octets BYTE Count from Start

Port rx_octets BYTE Count from Start

Port rx_good_octets BYTE Count from Start

Port rx_broadcast_pkts BYTE Count from Start

Port rx_multicast_pkts BYTE Count from Start

Port rx_unicast_pkts BYTE Count from Start

Port rx_pause_pkts BYTE Count from Start

Port tx_octets BYTE Count from Start

Port tx_collisions BYTE Count from Start

Port tx_multiple_collision BYTE Count from Start

Port tx_single_collision BYTE Count from Start

Port tx_broadcast_pkts BYTE Count from Start

Port tx_multicast_pkts BYTE Count from Start

Port tx_unicast_pkts BYTE Count from Start

Port tx_pause_pkts BYTE Count from Start

N-View Port Error Variables

Port rx_alignment_errors BYTE Count from Start

Port rx_drop_pkts BYTE Count from Start

Port rx_fcs_errors BYTE Count from Start

Port rx_fragments BYTE Count from Start

Port rx_jabbers BYTE Count from Start

Port rx_over_size_pkts BYTE Count from Start

Port rx_sa_changes BYTE Count from Start

Port rx_symbols_errors BYTE Count from Start

Port rx_under_size_pkts BYTE Count from Start

Port tx_deferred_transmit BYTE Count from Start

Port tx_drop_pkts BYTE Count from Start

Port tx_excessive_collision BYTE Count from Start

Port tx_frame_in_disc BYTE Count from Start

Port tx_late_collision BYTE Count from Start