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Appendix 2 Response time
The communication response time can be calculated from data communication time and inverter
processing time.
When wishing to know the communication response time, calculate using the
following as a reference
Data transmission time
bits
of
number
d
transmitte
bytes
of
number
rate
baud
1
time
on
transmissi
Data
×
×
=
* Number of bits = start bit + data frame parity bit + stop bit
* Minimum number of bits = 1 + 8 + 0 + 1 = 10 bits
* Maximum number of bits = 1 + 8 + 1 + 2 = 12 bits
<An example of the calculation of the transmission time: 19200 bps, 8 bytes, 11 bits>
4.6ms
11
8
19200
1
time
on
transmissi
Data
=
×
×
=
Data processing time of inverter
Data processing time: maximum 8 ms
Inverter
→
PC
Data transmission time
Response time
PC
→
Inverter
Data transmission time
Interval corresponding to 3.5 bytes
Data processing time of inverter (Approx. 8 ms)
