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Re: EC2 60HRP Hitachi PLC Cable Pinout

Click HERE for a PDF of the cable pin-out for the Hitachi EC2.

Just a side note, remember that the PGM-COM1-COM2 switch should normally be in “COM2”. COM1/COM2 refer to “modes” or communications protocols – do not confuse with a PC’s COM (serial) port. Your software should also have a setting that refers to COM2 – or “Advanced Mode Protocol”. You should select that setting and put the switch on the EC2 at COM2. Also note that the position of the switch on the EC is ONLY read during power up. So if you change the position of the switch, in order for it to take effect, you must power down and power back up.

Good Luck with your project.