Problems with PC operation
Maintenance/Troubleshooting
1-21
Is the Ethernet cable a straight type or a cross type?
Cause
The GP and the PC might be connected without a hub using a straight cable. Cross
cables cannot be used when employing the one-to-one connection, depending on PCs or
network cards.
Solution
Provide a hub between the GP and a PC when using a straight cable. Make sure that the
GP and PC are connected with a straight cable via hub not with a cross cable in order to
avoid incompatibility between the GP and PC.
• Distinguishing between a straight cable and cross cable
Compare the connectors at the both ends of the cable. When the color-coded signal
cables are arranged in the same orders from the left in the connectors, it is a straight
cable. When they are arranged differently, it is a cross cable. The color-coded of the
signal cables depend on the cable is used. The following pictures are examples.
Straight cable
Cross cable
The color-coded signal cables are arranged in
the same orders from the left of them,
“White-Yellow-White-Blue-White-Green-White”,
“White-Yellow-White-Blue-White-Green-White”
The color-coded signal cables are not arranged
in the same orders from left of them,
“Black-Orange-Blue-White-Green-Black”,
“Black-Green-White-Blue-Orange-Black”
