Data Definitions - Mitsubishi Electric FR-F800 Instruction Manual

(N) Operation via communication and its settings
Data definitions
• Control code
Signal name ASCII Code
STX H02
ETX H03
ENQ H05
ACK H06
LF H0A
CR H0D
NAK H15
• Inverter station number
Specify the station number of the inverter which communicates with the computer.
• Instruction code
Specify the processing request, for example, operation or monitoring, given by the computer to the inverter. Hence, the
inverter can be run and monitored in various ways by specifying the instruction code appropriately. (Refer to
• 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
• 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 in the range of 0 to 150 ms in 10 ms increments.
(For example; 1=10 ms, 2= 20 ms)
Computer
Inverter
Inverter
Computer
NOTE
• When Pr.123 or Pr.337 (Waiting time setting)
data format. (The number of characters decreases by 1.)
• The data check time varies depending on the instruction code. (Refer to
• Sum check code
The sum check code is a 2-digit ASCII (hexadecimal) representing the lower 1 byte (8 bits) of the sum (binary) derived from
the checked ASCII data.
(Example 1)
Computer
ASCII Code
* When the Pr.123 or Pr.337 (Waiting time setting)
data without "waiting time" in the data format. (The number of characters decreases by 1.)
(Example 2)
Inverter
ASCII Code
454
PARAMETERS
Description
Start Of Text (Start of data)
End Of Text (End of data)
Enquiry (Communication request)
Acknowledge (No data error detected)
Line Feed
Carriage Return
Negative Acknowledge (Data error detected)
ENQ Station
Inverter
number
0 1
H05 H30 H31
H30+H31+H45+H31+H31+H30+H37+H41+H44
= H1F4
Sum
Station
STX
Computer
number
0 1
H02 H30 H31
H30+H31+H31+H37+H37+H30
= H130
Sum
page 460.)
Inverter data processing time
=
"9999", create a communication request data without "waiting time" in the
≠
page
Instruction
Data
code
E 1 1 0 7 A
H45 H31 H31 H30 H37 H41 H44 H46 H34
"9999", create the communication request
Sum
Data read
ETX
check
code
1 7 7 0 3
H31 H37 H37 H30 H03 H33 H30
Waiting time data check time
+
(setting 10ms) (About 10 to 30ms,
which depends on the
instruction code)
455.)
Sum
check
code
D F 4
Binary code
0 Binary code
page 460.)