Mitsubishi Electric FR-S520E Series Instruction Manual page 160

Communication parameters
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
REMARKS
When communication parameter n7 "waiting time setting" ≠ "- - -", create the communication
request data without "waiting time" in the data format. (The number of characters is
decremented by 1.)
6) Response time
Data sending time
(refer to the following formula)
Computer
Inverter
Inverter
Computer
Data sending time
(refer to the following formula)
Computer
Inverter
Inverter
Computer
[Formula for data sending time]
1
Communication speed
(bps)
Communication specification
Name
Stop bit length
Data length
Parity check
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
Inverter data processing time = waiting time + data check time
STX
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 148)
Number of Bits
1 bit
2 bits
7 bits
8 bits
Yes 1 bit
No 0 bit
Inverter data processing time
= waiting time + data check time
(setting 10ms)
(set value 10ms)
ACK ENQ
10ms or 10ms or
more required more required
(set value 10ms)
ENQ
10ms or
more required
Communication specification
×
(Total number of bits)
(See below)
150
(12ms)
(12ms)
(12ms)
= Data sending time (s)