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Illustration 1 g01114474
Illustration 1 shows a complete "J1939 Bridge" network. The two independent J1939 networks are joined through the PL1000T. When configured to provide the "J1939 Bridge" functionality, the PL1000T ECM functions as a repeater between the two J1939 networks. The PL1000T will forward any incoming J1939 data to the bridged network, regardless of message format or data content.All J1939 messages on Network 1 will be relayed to Network 2, and all J1939 messages on Network 2 will be relayed to Network 1. Each message being relayed will be presented entirely on the destination J1939 Network. Each message will appear to have originated on the destination J1939 network.An example application for implementation of the "J1939 Bridge" feature is on a marine vessel. In some larger marine vessels the engines are typically located a significant distance from the bridge or engine monitoring station. Typical CAN data link physical network specifications require the wiring be limited to a total distance of no greater than 40 m.The "J1939 Bridge" feature of the PL1000T can provide two physical networks while maintaining a single logical network, which will allow wiring on each CAN network to run a total of 40 m (131 ft) each. With an available 40 m (131 ft) on each physical link, the total logical CAN network is now limited by the total of 80 m (262 ft).In this particular example the PL1000T would be positioned mid distant between the engine room and the bridge or monitoring station.CAN Extension Bridge
The PL1000T, when configured to provide the CAN Extension Bridge functionality, will join two CAN networks into a single network. While similar in function to the "J1939 Bridge" feature, the CAN Extension Bridge feature allows a much longer span and requires two PL1000Ts.
Illustration 2 g01114482
Illustration 2 shows a complete CAN "Extension Bridge" network. "Network 1" is logically connected to "Network 2" through the RS-485 network that is used between the two PL1000Ts.There can also be a logical connection between Network 3 and Network 4 through the same RS-485 Network and PL1000Ts. When configured to provide the "CAN Extension Bridge" functionality, each of the PL1000Ts will "multiplexe" and "de-multiplexe" the J1939 communications over the RS-485 network.The two new logical networks share the RS-485 connection. The data from CAN networks 1 and 2, is not available on networks 3 or 4. The reverse is also true. Each message is being relayed on the two independent logical networks.An example application for implementation of the "CAN Extension Bridge" feature is on a marine vessel. In some larger marine vessels the engines are typically located a significant distance from the bridge or engine monitoring station. Typical CAN data link physical network specifications require the wiring be limited to a total distance of no greater than 40 m (131 ft).The "CAN Extension Bridge" feature can accommodate four physical networks while maintaining two independent logical networks. The "CAN Extension Bridge" feature will allow wiring on each original CAN network to run a total of 40 m (131 ft) each.The information from each of these networks can then be passed along the RS-485 network between the two PL1000Ts for a distance up to 305 m (1000 ft).One of the PL1000Ts in this example would be positioned within 40 m (131 ft) of up to two CAN networks in the bridge or engine monitoring station, and the other PL1000T would be positioned within 40 m (131 ft) of up to two CAN networks in the engine room.These two PL1000Ts would then be connected by the RS-485 network not to exceed 305 m (1000 ft). Messages would then be relayed across the two logical CAN networks."Multi-plexing" two J1939 networks over the RS-485 communication and link between the two PL1000T devices, can restrict the normal bandwidth of a J1939 network. The restriction can be as much as 40 percent. If intermittent data loss is experienced, the date link loading should be analyzed.Engine Vision Interface Module (EVIM)
The Engine Vision Display is a computerized monitoring system that is used in order to display engine information. The engine information includes temperatures, pressures and levels concurrently up to three engines.
Illustration 3 g03722456
Illustration 3 shows an example integration of the PL1000T into a system as an "Engine Vision Interface Module".The PL1000T, when configured to provide the EVIM feature, translates the EVIM data requests to the engine control. The PL1000T then translates the engine data responses back to the EVIM.The PL1000T is a direct functional replacement for the existing 225-0774 System Communication Module Gp. However, the PL1000T will require some different system wiring and system integration considerations.This manual is intended to address the EVIM communications capability of the PL1000T. For specific information related to installation, operation, and troubleshooting of the "Engine Vision Display", refer to the Service Manual, SENR5002.Global Positioning System Interface Module (GPSIM)
The PL1000T, when configured to provide the GPSIM feature, receives "Global Positioning System" (GPS) information from the "NMEA-183" sensing module. The PL1000T transmits the GPS information on the Cat Datalink and J1939 networks.
Illustration 4 g03722539
Illustration 4 shows an example integration of the PL1000T into a system as a "Global Positioning System Interface Module".This PL1000T feature is designed as a direct functional replacement of the existing 130-6191 System Communication Module Gp. However, The PL1000T will require some changes to the system wiring and system integration considerations.This manual is intended to address the GPSIM communications capability of the PL1000T, which is typically used with the "Engine Vision Display". For specific information related to installation, operation, and troubleshooting of the "Engine Vision Display" refer to the Service Manual, SENR5002.Cat Datalink (CDL) Tunnel
The PL1000T can be configured to transmit the full content of one protocol inside the envelope of another protocol.All messages on the Cat Datalink are received by the PL1000T. The entire message is placed into a special tunneling J1939 message. The messages are transmitted over the J1939 network. The "CDL Tunnel" feature is designed for use with the Caterpillar 3500B Series II Engines. The "CDL Tunnel" is a replacement for the previous 171-4454 Interface Module Gp.