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6
WIRING
6.1
Ethernet Cable
This section shows the specifications of connectable Ethernet cables when connecting the Ethernet port (CH1/CH2) to
peripheral devices.
Connectable twisted pair cables (sold separately)
The twisted pair cable compliant with IEEE802.3 1000BASE-T/100BASE-TX/10BASE-T standards can be used.
Transmission rate
1000 Mbps
100 Mbps
10 Mbps
Considerations for 1000BASE-T/100BASE-TX connection
In a high-speed communication (100 Mbps/1000 Mbps) with 1000BASE-T/100BASE-TX connection, a communication error
may occur due to the high frequency noise generated from a device other than MES interface module system depending on
the installation environment.
The following shows the measures to be taken on MES interface module side to prevent the influence of high frequency noise
when configuring a network system.
• Do not bundle a cable with the main circuit or power cable, or do not place it near those lines.
• Place a cable in a duct.
• In the environment where a cable is susceptible to noise, use the STP cable.
• Change the target device connected with MES interface module to one which communicates at 10 Mbps, and decrease the
data transmission rate.
Wiring of an Ethernet cable
The following shows the connecting and disconnecting methods of an Ethernet cable to MES interface module.
Connecting procedure
1.
Check the insertion direction, and insert an Ethernet cable into the Ethernet port on MES interface module until it clicks.
2.
Check if the cable securely is connected by pulling it slightly.
3.
Check if the SPEED LED lighting status of the Ethernet port connected with the Ethernet cable. (Page 16 PART
NAMES)
• The time required from when an Ethernet cable is connected to when the SPEED LED turns ON may vary.
Normally, the LED turns ON in a few seconds. However, it may take longer because the linking-up
processing is repeated due to the device condition on the line.
• When the SPEED LED does not turn ON, check if the connected Ethernet cable has any failure.
• The SPEED LED is turned OFF when connecting with an Ethernet device on the network of which the
transmission rate is 10 Mbps. Check the communication state by executing the PING test etc.
Disconnecting procedure
1.
Pull out the Ethernet cable while pinching a clip on the connector.
6 WIRING
82
6.1 Ethernet Cable
Unshielded twisted pair cable (UTP cable)
Shielded twisted pair cable (STP cable)
Straight cable
Category 5e or higher
Category 5 or higher
Category 3 or higher
Crossing cable
Category 5e
Category 5 or 5e
Category 3 to 5e
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