Mitsubishi Electric FR-A520-0.4K Instruction Manual page 143

5) Waiting time
Specify the waiting time between the receipt of data at the inverter from the computer and the transmission
of reply data. Set the waiting time in accordance with the response time of the computer between 0 and
150ms in 10ms increments (e.g. 1 = 10ms, 2 = 20ms).
Computer
↓
Inverter
Inverter
↓
Computer
ote : When Pr. 123 "waiting time setting" , 9999, create the communication request data
with no "waiting time" in the data format. (The number of characters is decreased by 1.)
6) Response time
Computer
Inverter
Inverter
Computer
Computer
Inverter
Inverter
Computer
[Data sending time calculation expression]
1
Communication speed
(bps)
Communication specification
Name Number of Bits
1 bit
Stop bit length
2 bits
7 bits
Data length
8 bits
Yes 1 bit
Parity
No 0 bits
In addition to the bits in the above table, 1 bit is required for the start bit.
Minimum total number of bits ... 9 bits
Maximum total number of bits ... 12 bits
Data sending time (refer to the following calculation expression)
Inverter data processing time = waiting time + data check time
STX
(refer to the following calculation expression)
Data sending time
Data sending time (refer to the following calculation expression)
Inverter data processing time = waiting time + data check time
Data sending time (refer to the following calculation expression)
Number of data characters
(Refer to page 121)
134
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Inverter data processing time
=waiting time
(set value×10ms)
(12ms)
(set value 10ms)
ACK ENQ
10ms or
10ms or
more required
more required
(set value 10ms) (12ms)
ENQ
10ms or
more required
Communication specification
(Total number of bits)
(See below)
PARAMETERS
+ data check time
(12ms)
= Data sending time (s)