7. CONNECTION TO FA NETWORKS
The figure below shows the cable connection between the 10BASE–T
interface (CD38L) on the Ethernet board or data server board and hub.
D Keep the total cable length within 100 m.
Do not extend the cable more than is necessary.
D The figure above shows the cable connection when cables are crossed
in the hub.
”X” is usually indicated at the port of the hub to signify that cables are
crossed in the hub.
Be sure to use a Category 5 shielded twisted pair (STP) cable for
improvement of noise immunity in FA environments, although various
types of unshielded twisted pair (UTP) cables for 10BASE–T are
currently on the market.
Use an 8–pin RJ–45 modular connector as a twisted pair cable connector
for the Ethernet.