Programming instructions

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If the PC does not have an RS232 serial port, there are a couple of options
available.
• On the FX3U series PLC, you can install an FX3U-USB-BD and connect
to the PLC directly from a USB port.
• For FX1S, FX1N, FX2N, FX2NC, and FX3U PLCs, you can use a cable
with USB to serial converter built in. Mitsubishi offers such a cable, part
number FX-USB-AW for sale. This cable has the 8-pin round DIN
programming plug as found on all current FX-Series PLCs. It will not work
with Q-Series, A-Series, or older FX-Series with the 25-pin D-SUB
connector.
• There are many third parties who offer USB to Serial adapters for sale.
Mitsubishi has tested only a few of these, and recommends the Keyspan
USA-19(W or HS) adapters or CP Technologies CP-US-03. These can
be used with the standard SC09 cable, and are available from computer or
office supply stores.