
B–63525EN/02
8. EMBEDDED ETHERNET FUNCTION
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4) Is the length of the backbone cable 500 m or less?
5) Does the cable (transceiver cable) connecting a hub to a transceiver
satisfy the specified length?
S Usually, the maximum allowable length of a transceiver cable is 50
m. However, the maximum allowable length of some thin cables
may be less than 50 m. Check the specification of the cable.
When a 10BASE–2 backbone is used
1) Is the length of one cable 0.5 m or more?
S The minimum allowable span between nodes (devices) is 0.5 m.
2) Is the length of the backbone cable (total length of the cables) 185 m
or less?
3) Are terminating resistors attached?
S A terminating resistor (50 ohms) needs to be attached to each end
of the backbone cable.
This subsection describes how to check the minimum settings required
for communication.
Checking the settings on the embedded Ethernet side
1) Is the MAC address of the embedded Ethernet displayed?
S The MAC address of a embedded Ethernet port is set for each CNC,
and can be checked on the parameter setting screen.
S A unique MAC address is assigned to each PCMCIA Ethernet card.
When a PCMCIA Ethernet card is selected and inserted, MAC
address display is provided.
2) Is a correct IP address set?
S Check if an IP address already specified for another device is set.
3) Is a correct subnet mask set?
S The subnet mask setting must match the subnet mask setting on the
communication destination device.
4) Is a correct router IP address set when communication via a router is
performed?
Checking the settings on the personal computer side
1) Is a correct IP address set?
S Check if an IP address already specified for another device is set.
2) Is a correct subnet mask set?
S The subnet mask setting must match the subnet mask setting on the
communication destination device.
3) Is a correct router IP address set when communication via a router is
performed?
8.8.3
Checking the Setting of
Each Parameter