Mitsubishi Electric FR-E500 Instruction Manual page 140

7) Error code
If any error is found in the data received by the inverter, its definition is sent back to
the computer together with the NAK code. (Refer to page 129.)
Note: 1. When the data from the computer has an error, the inverter will not accept
that data.
2. Any data communication, e.g. run command, monitoring, is started when the
computer gives a communication request. Without the computer's command,
the inverter does not return any data. For monitoring, therefore, design the
program to cause the computer to provide a data read request as required.
3. When accessing the parameter settings, data for link parameter expansion
setting differs between the parameters as indicated below:
Link
parameter
expansion
setting
When the inverter's permissible communication 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 (E.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.
Instruction
Code
Read H7F
Write HFF
CAUTION
Data
H00: Pr. 0 to Pr. 96 values are accessible.
H01: Pr. 100 to Pr. 158 and Pr. 900 to Pr. 905
values are accessible.
H02: Pr. 160 to Pr. 196 and Pr. 232 to Pr. 250
values are accessible.
H03: Pr. 338 to Pr. 340 values are accessible.
H09: Pr. 990, Pr. 991 values are accessible.
125
PARAMETERS
4