Mitsubishi MELSEC-Q Series User Manual page 67

2
SYSTEM CONFIGURATION
(2) Twisted pair cable
Use the twisted pair cable that meets IEEE802.3 10BASE-T/100BASE-TX standards.
(a) For 100Mbps
(b) For 10Mbps
POINT
Use either of the following cables.
• Unshielded twisted pair cable (UTP cable), Category 5
• Shielded twisted pair cable (STP cable), Category 5
Use either of the following cables.
• Unshielded twisted pair cable (UTP cable), Category 3 (4, 5)
• Shielded twisted pair cable (STP cable), Category 3 (4, 5)
During the high speed communication (100Mbps) via 100BASE-TX connection, a
communication error may occur due to high frequency noise generated from the
device other than C Controller module, depending on the installation environment.
When configuring the network system, take the following measures on the C
Controller module side to eliminate the effect of high frequency noise.
1. Wiring
• Keep the twisted pair cables away from the main circuit or power cables.
• Make sure to place the twisted pair cables in a duct.
2. Cable
• In the environment where the cable is susceptible to noise, use the
shielded twisted pair cable (STP cable).
3. Retry processing
• In the environment where cables are susceptible to noise, include the
retry processing in the user program.
4. 10Mbps communication
• Connect the 10Mbps-compatible device to C Controller module, and then
transmit data at transmission speed of 10Mbps.
2.4 Applicable Devices
1
2
3
4
5
6
7
8
2
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