[?]: What Ethernet Cable to use for S7-300 CPU

[Peehel]

Dear All,
What Ethernet cable to use for programming and connecting with S7-300 Cpu with ethernet port when connecting directly with the CPU or not using a ethernet network switch? Is it a straight through or crossover cable?
Thanks in advance.

[Valleyman]

Dear All,
What Ethernet cable to use for programming and connecting with S7-300 Cpu with ethernet port when connecting directly with the CPU or not using a ethernet network switch? Is it a straight through or crossover cable?
Thanks in advance.

Crossover is the answer, definetly.
With a crossover, even if there is a switch everything is fine. With a straight you can work only with switch or , without a switch, hope that the auto-switching firmware is working properly (pretty rare).

So use a crossover.

For your information the crossover is the dark white cable with green connectors (this is the default aspect).

[suzhoumaduaoyun]

Nomaly Siemens PLC is support both type of the ethernet cable ,it means straight and cross can be actomaticly check by siemens PLC.