Mitsubishi Electric F700 Instruction Manual page 172

(4) Data definitions
1) Control codes
Signal
ASCII Code
Name
STX H02
ETX H03
ENQ H05
ACK H06
LF H0A
CR H0D
NAK H15
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 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 as appropriate. (Refer to
page 38)
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 38)
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 Pr. 123, Pr. 337 (waiting time setting)
format. (The number of characters decreases by 1.)
⋅ The data check time changes depending on the instruction code. (Refer to page 167)
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)
≠ "
9999 , create the communication request data without "waiting time" in the data
"
Communication operation and setting
Inverter data processing time
Waiting time data check time
= +
(setting 10ms) (About 10 to 30ms,
which depends on the
instruction code)
3
165