Mitsubishi Electric FR-E500 Instruction Manual page 139

2) Inverter station number
Specify the station number of the inverter which communicates with the computer.
3) Instruction code
Specify the processing request, e.g. operation, monitoring, given by the computer to
the inverter. Hence, the inverter can be run and monitored in various ways by
specifying the instruction code as appropriate. (Refer to page 199.)
4) Data
Indicates the data such as frequency and parameters transferred to and from the
inverter. The definitions and ranges of set data are determined in accordance with
the instruction codes. (Refer to page 199.)
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 decremented by 1.)
6) Sum check code
The sum check code is 2-digit ASCII (hexadecimal) representing the lower 1 byte
(8 bits) of the sum (binary) derived from the checked ASCII data.
(Example 1)
Computer → inverter
(Example 2)
inverter → Computer
E
N number
Q
ASCII code →
H05 H30 H31
Sum
S
T
number
X
ASCII code →
H02 H30 H31
Sum
Inverter data processing time
Station
Instruction
code
1
0 1 E 1 0
H45 H31 H31 H30 H37 H41 H44 H46 H34
H
H H H H H
30 + 31 + 45 + 31 + 31 + 30 + 37 + 41 + 44
H
=1F4
Station
Read time
0 1 1 7 7 0
H31 H37 H37 H30 H03 H33 H30
H
H H H H H
30 + 31 + 31 + 37 + 37 + 30
H
=130
124
PARAMETERS
= waiting time + data check time
(setting×10ms) (12ms)
Sum
check
Data
code
←Binary code
7 A D F 4
H H H
Sum
E
check
T
code
X
←Binary code
3 0