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Technical specifications for NCNI P0972PP
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Manufacturer:Invensys
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Product Category:DCS Systems
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Spare Part Number:NCNI P0972PP
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Estimated shipping dimensions:7x26.8x10.7cm
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Weight:2.22 kg
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Tariff Code:8537101190
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Counliy of origin:USA
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Nodebus data rate:10 Mbps
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Optical Ethernet standard:100BASE-FX
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Optical link rate:100 Mbps, fixed
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Optical duplex:Full duplex, fixed
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Optical connector:MT-RJ
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Optical fiber:62.5/125 µm multimode
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Maximum optical path:2 km
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Copper Ethernet interface:10/100 Mbps, auto-negotiating
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Copper duplex:Half/full duplex, auto-negotiating
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Copper cable:CAT5 shielded twisted pair
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Maximum copper path:100 m
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Redundant Nodebus interface count:2 modules; one for A and one for B
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Supply voltage range:26–42 V DC
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Typical supply voltage:39 V DC
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Maximum power consumption:8 W per module
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Maximum heat dissipation:8 W per module
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Operating temperature:0 to +60 °C
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Operating relative humidity:5–95%, noncondensing
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Operating altitude:-300 to +3000 m
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Storage temperature:-40 to +70 °C
Information
Overview
Manuals
Common Applications
Product Precautions
Foxboro NCNI P0972PP provides a network attachment for Nodebus stations while their existing network software continues to exchange information transparently across the physical-network boundary.
- Uses internal Ethernet switching and local buffering for rate adaptation.
- Draws power and accesses Nodebus through its Cellbus connection.
- Provides front-panel link and module-status indications.
- Uses a pair of modules to connect the separate Nodebus A and B paths.
The copper port negotiates both link rate and duplex, while the optical link operates with fixed settings. Select the switch port and cable medium together so that the two ends use the appropriate Ethernet interface.
Important Notice: Keep the A and B Nodebus assignments distinct when installing the two network interfaces.
Foxboro NCNI P0972PP Manuals & Downloads
Foxboro NCNI P0972PP Manufacturer Technical Reference — Selected Pages (PDF)Foxboro NCNI P0972PP Installation & Commissioning Guide (PDF)
The reference excerpt illustrates Nodebus-to-Ethernet operation. The installation guide covers A/B path allocation, copper and fiber selection, Cellbus mounting and communication checks.
Nodebus network attachment
Connect existing I/A Series Nodebus stations to the control-network infrastructure.
Separated control locations
Use an optical path where the installation requires the supported multimode-fiber connection.
Copper switch connections
Attach nearby network equipment through shielded CAT5 cabling and the negotiating copper port.
Redundant bus arrangements
Provide independent interfaces for the A and B Nodebus paths.
Check the assigned bus path, optical or copper medium and Cellbus supply before working on Foxboro NCNI P0972PP.
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Assign one interface to Nodebus A and the other to Nodebus B.
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Verify that the mounting structure provides the required Cellbus connection.
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Use the specified multimode fiber and MT-RJ connector for the optical path.
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Match fixed optical settings with the connected 100BASE-FX switch port.
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Retain shielded CAT5 construction for a copper network connection.
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Check the negotiated copper rate and duplex at the switch end.
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Include both interfaces when calculating power and heat for a redundant arrangement.
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Confirm module status and the intended network links after restoring both paths.
Technical notes
The fiber interface is 100BASE-FX with an MT-RJ connector and 62.5/125 µm multimode fiber. The copper alternative uses CAT5 shielded twisted pair; a copper connection and an optical connection have different distance limits.
FAQ View All FAQ
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Why are two Foxboro NCNI P0972PP modules used for a redundant Nodebus connection?Each module serves one of the two Nodebus paths. One interface is assigned to bus A and the other to bus B, so the redundant connection requires two modules.
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Which link settings can the copper port of Foxboro NCNI P0972PP negotiate?The copper port automatically negotiates 10 or 100 Mbps operation and half or full duplex. Its optical interface instead operates at a fixed 100 Mbps in full duplex.
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Does Foxboro NCNI P0972PP require gateway software on the connected stations?No special gateway software is required on either set of stations. Standard Redundant Control Network software provides transparent communication between the Nodebus and control-network sides.
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What does the internal buffer in Foxboro NCNI P0972PP contribute to network communication?The local buffer works with the internal Ethernet switch to connect the 10 Mbps Nodebus side to a 100 Mbps network connection. It supports the transition between the two link rates.
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How does mounting Foxboro NCNI P0972PP in a Cellbus structure complete its connections?The Cellbus connection supplies module power and the interface to Nodebus. The front-panel connector provides the separate connection toward the Ethernet network switch.
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Can a nominal 39 V supply vary within the input range of Foxboro NCNI P0972PP?Yes. The specified DC input range is 26 to 42 V, with 39 V as the typical value. The module consumes and dissipates a maximum of 8 W.
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Must Foxboro NCNI P0972PP occupy a particular numbered mounting slot?The module may be placed in any I/A Series mounting-structure slot. Its installation must still provide the Cellbus power and Nodebus connection required for operation.
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Is single-mode fiber the specified medium for the MT-RJ port of Foxboro NCNI P0972PP?No. The specified optical medium is 62.5/125 µm multimode fiber with an MT-RJ connector, supporting a path of up to 2 km to the appropriate Ethernet switch port.
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