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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 fol-
lowing as a reference
■ Data transmission time
bits of numberdtransmitte bytes of number
rate baud
1
time ontransmissi Data ××=
* Number of bits = start bit + data frame length + 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>
4.6ms118
19200
1
time ontransmissi Data =××=
■ Data processing time of inverter
Data processing time: maximum 20ms
Inverter → PC
Data transmission time
Res
p
onse time
PC → Inverte
r
Data transmission time
Data
p
rocessin
g
time of inverte
r