Mitsubishi Electric FR-A500 Instruction Manual page 139

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
Note: If the Pr. 123 "waiting time setting" value is not 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
[Formula for data sending time]
1
Communication speed
(bps)
Communication specification
Name
Stop bit length
Data length
Yes
Parity
check
No
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 formula)
Inverter data processing time = waiting time + data check time
Data sending time
Data sending time (refer to the following formula)
Inverter data processing time = waiting time + data check time
Data sending time (refer to the following formula)
Number of data characters
×
(Refer to page 128 )
Number of Bits
1 bit
2 bits
7 bits
8 bits
1 bit
0 bit
(set value 10ms)
ACK
STX
10ms or
more required
(refer to the following formula)
(set value 10ms)
ENQ
10ms or
more required
Communication specification
×
(total number of bits)
(See below)
130
PARAMETERS
Inverter data processing time
=waiting time + data check time
(set value 10ms) (12ms)
(12ms)
ENQ
10ms or
more required
(12ms)
= Data sending time(s)