Mitsubishi FR-A500 Series - Page 136

PARAMETERS
123
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
Inverter data processing time
=waiting time + data check time
(set value
×
10ms) (12ms)
Note : When Pr. 123 "waitin
g
time settin
g
" , 9999, create the communication request data
with no "waitin
g
time" in the data format.
(The number of characters is decreased by 1.)
6) Response time
(set value 10ms)
(set value 10ms)
Inverter
Computer
(refer to the following calculation expression)
Inverter data processing time = waiting time + data check time
(12ms)
10ms or
more required
10ms or
more required
(refer to the following calculation expression)
STX
ACK ENQ
(refer to the following calculation expression)
Inverter data processing time = waiting time + data check time
(12ms)
10ms or
more required
Data sending time (refer to the following calculation expression)
ENQ
Data sending time
Data sending time
Data sending time
Computer
Inverter
Inverter
Computer
Computer
Inverter
[Data sending time calculation expression]
1
Communication speed
(bps)
Number of data characters
(Refer to page 121)
Communication specification
(Total number of bits)
(See below)
= Data sending time (s)
Communication specification
Name Number of Bits
Stop bit length
1 bit
2 bits
Data length
7 bits
8 bits
Yes 1 bit
Parity check
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
4