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When the inverter's communication check time interval is not set,
interlocks are provided to disable operation to prevent hazardous
conditions. Always set the communication check time interval before
starting operation.
Data communication is not started automatically but is made only once
when the computer provides a communication request. If communication is
disabled during operation due to signal cable breakage, etc., the inverter
cannot be stopped. When the communication check time interval has
elapsed, the inverter will come to an alarm stop (PUE).
The inverter can be coasted to a stop by switching on its RES signal or by
switching power off.
If communication is broken due to signal cable breakage, computer fault,
etc., the inverter does not detect such a fault. This should be fully noted.
<Setting items and set data>
After completion of parameter settings, set the instruction codes and data as indicated
below, and then start communication from the computer to allow various types of
operation control and monitoring.
Instruc
No.
Item
Operation
1
mode
CAUTION
tion
Code
H0000: CC-Link operation
H7B
H0001: External operation
H0002: PU (RS-485 communication)
H0000: CC-Link operation
HFB
H0001: External operation
H0002: PU (RS-485 communication)
Computer Link Operation Setting
Description
87
Number
of Data
Digits
4 digits
3
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