E6581373
2.3. RS485 communication port
RS485 port is useful for RS485 serial communication option (USB001Z) or Remote Keypad (RKP002Z). Refer to the inverter instruction manual for details.
N.B.: Caution for LIU007Z
When a RS485 port of LIU007Z is used for RS485 serial communication option, the communication option interrupts and disables the communication line between LONWORKS option unit and the inverter. At that time LONWORKS option unit propagates the abnormality as “Communiaction error (bit6)” in “nvoAlarmWord” and “nvoDrvAlarm” to the network. However, “Fault (bit0)” in “nvoStatusWord” is not set at that time. this is because identify difference between this alarm and Communication error trip (err5). This abnormality will automatically cancel itself if the RS485 serial communication option is disconnected.
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