COVER 3Q7888 - Caterpillar

Illustration 15 g01416723
Additional information for the RS-485 connection that must be considered:The PL1000E part number 256-7512 (v4) and beyond support RS-485 2 wire. Previous versions do not support Rashly 2 wire.
16 AUG. or 18 AUG. common harness wire should be used for wiring the Rashly network.
Use good wire routing and wire securing practices in order to avoid damage to the cable.
Route the cable away from high power and sources of high frequency in order to avoid inducing electrical noise into the wiring.
Each device that is installed on the Rashly network must have power system connections that share a common ground (BATT-).
Install sealing plugs ( 8T-8737 ) into any unused sockets at the rear of the connector.RS-232 Wiring Requirements
The RS-232 communications connection provides a connection between the PL1000E and RS-232 devices. The connection conforms to EIA RS-232 standards. The connection will work with any RS-232 devices that also conform to the EIA RS-232 standards. Table 11 shows the parameters for connections for a RS-232 device. Illustration 16 shows a typical electrical connection to RS-232 devices.
Table 11
RS-232 Port Characteristics    
Parameter     Value    
Maximum Length of the Cable    
30.5 m (100 ft)    
Maximum Capacitance for the Cable from one Conductor to another Conductor (1)     .002 µF    
Maximum Resistance of the Cable for a single Conductor (2)     25 Ω    
( 1 ) In order to measure capacitance of the cable, disconnect all devices from the network at the device. The wires for the network must be open between the two conductors. Measure the capacitance between the two wires.
( 2 ) In order to measure the resistance of the cable, disconnect all devices from the network at the device. The wires for the network must be open between the two conductors. Short the wires together at the PL1000E Communication ECM device. Measure the resistance between the two wires at each of the other devices. For the maximum reading taken, divide the resistance measurement by 2 and compare to the value shown.
Illustration 16 g01157224
Additional RS-232 device connection information to consider:
Either 16 AWG or 18 AWG wire should be used for all RS-232 serial port connections and harnessing.
Use good wire routing and wire securing practices in order to avoid damage to the cable.
Route the cable away from high power and sources of high frequency in order to avoid inducing electrical noise into the wiring.
Each device that is installed must have power system connections that share a common ground (BATT-).
Install sealing plugs ( 8T-8737 ) into any unused sockets at the rear of the connector.Wiring Requirements for Ethernet
The Ethernet communications connection provides a connection between the PL1000E and Ethernet devices. The connection must conform to EIA 568-A standards. The connection must be able work with any Ethernet device that also conforms to EIA 568-A standards.A minimum of "Category 5" Ethernet cable that meets ANSI/EIA/TIA-568-A building wiring standards must be used when connecting to PL1000E. The "CAT 5" rating will be printed on the jacket of the cable. A "Category 5"