Configuration Devices Used For 10Base5 Connection - Mitsubishi Electric QJ71E71-100 User Manual

5.2.2

Configuration devices used for 10BASE5 connection

A QJ71E71-B5 is used for 10BASE5 connection. Use devices that meet the IEEE 802.3 10BASE5 standards.
N-type terminating
Configuration device
10BASE5 coaxial cable
N-type terminating resistor
AUI cable (transceiver cable)
Transceiver
DC power supply (power supply for a
transceiver)
● The transceiver electrical characteristics are as follows. The power supply for the transceiver needs to be 13.28VDC to
15.75VDC.
• Input terminal voltage: 12VDC
• AUI cable direct resistance: 40/km or less, maximum length 50m (164ft.)
• Maximum current consumption: 500mA or less
The voltage drop (V) of the power supply for the transceiver is calculated as follows.
Voltage drop (V) = AUI cable direct current resistance (/m) × AUI cable length (m) × 2 (both directions) × transceiver
2.0(VDC) = 0.04(
Ex.
In this case, the recommended power supply for the transceiver is more than 13.28VDC.
13.28(VDC) = 12VDC
● A communication error may occur due to high-frequency noise from devices other than a programmable controller in a
given installation environment. The following describes countermeasures to be taken on the E71 side to avoid high-
frequency noise influence.
• Install a ferrite core. (
• Increase the number of retries of communications for TCP/IP communication.
Remark
Consult a network specialist for required devices.
resistor
Coaxial cable
Transceiver
Connected device
The Ethernet standards need to be satisfied.
The Ethernet standards need to be satisfied. The SQE TEST (Signal Quality
Error TEST) or the heartbeat needs to be supported.
The specifications of the transceiver and the AUI cable need to be satisfied.
-6%
to 15VDC
current consumption (A)
/m) × 50(m) × 2 × 0.5(A)

-6%
× (11.28VDC) + 2.0(VDC)
Page 77, Section 6.2.2)
CHAPTER 5 SYSTEM CONFIGURATION
N-type terminating
resistor
E71
DC power supply
Description
+5%
5
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