Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 845 / 1218

Parameters (N) Operation via communication and its settings
FR-A800 5 - 643
Response time
Formula for data transmission time
●
Communication specifications
●
Data check time
HD
⎯ ⎯ ⎯
HE
⎯ ⎯ ⎯
HF Normal (no error)
⎯ ⎯
I001327E
Fig. 5-320: Response time
1
×
Number of data
characters
(Refer to page 5-638)
×
Communication specifications
(Total number of bits) = data transmission time (s)
(Refer to the following.)
Communication speed
(bps)
Name Number of bits
Stop bit length
1 bit
2 bits
Data length
7 bits
8 bits
Parity check
With 1 bit
Without 0 bits
Tab. 5-279: Communication specifications
NOTES In addition to the above, 1 start bit is necessary.
Minimum number of total bits: 9 bits, maximum number of total bits: 12 bits.
Item Check time
Various monitors, operation command,
Frequency setting (RAM)
< 12 ms
Parameter read/write,
Frequency setting (EEPROM)
< 30 ms
Parameter clear / all clear < 5 s
Reset command No answer
Tab. 5-280: Data check time
Error
code
Error item Error description Inverter operation
Tab. 5-278: Error codes (2)
Computer

Inverter
Inverter

Computer
Data sending time (refer to the following formula)
Inverter data processing time = Waiting time + Data check time
(setting x 10 ms) (Depends on the instruction code
(see tab. 5-280))
Time
Data sending time (refer to the following formula)
10 ms or more necessary