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NE40E V800R010C10SPC500 Installation Guide

This is NE40E V800R010C10SPC500 Installation Guide

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serial cable (RS232/RS485)

serial cable (RS232/RS485)

The serial cable can be RS232 cable or RS485 cable, which is used for transferring the serial port service.

Connection

One end of the serial cable is an 8-pin RJ45 connector and the other end is an RJ45 connector or a connector of other types. The connections are as follows:
  • The 8-pin RJ45 connector is connected to the serial port on the device.
  • The other connector is connected to the terminal housing a serial port.

Appearance and Structure

Figure 3-44 shows the appearance of the serial cable.

Figure 3-44 Structure of the serial cable



Pin Assignments

The X1 end of the serial cable is an RJ45 connector and the other end is a connector of other types. Connect the serial cable based on the pin assignments of the serial cable, as shown in Table 3-27.

Table 3-27 Pin assignments of the serial cable

X1

Signal Name

1

GND

2

GND

3

RS232_TXD (connected to the peer RXD)

4

GND

5

GND

6

RS232_RXD (connected to the peer TXD)

7

RS485_D+

8

RS485_D-

Technical Specifications

Table 3-27 describes the technical specifications of the serial cable.

Table 3-28 Technical specifications of the serial cable

Item

Specification

Connector (X1)

RJ45 connector

Cable type

Category-5 unshielded twisted pairs (UTP-5) or shielded twisted pairs (STP)

Color

Dark gray

Characteristic impedance

100.0 ohms

Core diameter of the inner conductor

0.510 mm

Breakdown voltage

500.0 V

DC resistance of the inner conductor

93.8 ohms

Core number

8

Frequency range

0-100 MHz

Frequency attenuation

22 dB/100 m @ 100 MHz

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Updated: 2019-01-03

Document ID: EDOC1100055059

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