Mitsubishi Electric 800 Series Instruction Manual page 489

 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. Therefore, the
operation or monitoring an item is enabled by specifying the corresponding instruction code. (Refer to
• Data
Read/write data such as parameters transmitted from/to the inverter. The definitions and ranges of set data are determined in
accordance with the instruction codes. (Refer to
• Time delay
Specify the delay time (time period between the time when the inverter receives data from the computer and the time when the
inverter starts transmission of reply data). Set the delay 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" for 10 ms or "2" for 20 ms.)
When Pr.123 PU communication waiting time setting or Pr.337 RS-485 communication waiting time setting is set to
other than "9999", create the communication request data without "delay time" in the data format. (The number of characters
decreases by 1.)
Computer
Inverter
Inverter
Computer
*1 Number set in data × 10 (ms) when Pr.123 = "9999". Pr.123 setting (ms) when Pr.123 ≠ "9999".
*2 About 5 to 50 ms. It varies depending on the instruction code.
NOTE
• The data check time varies depending on the instruction code. (Refer to
488
5. PARAMETERS
5.12 (N) Operation via communication and its settings
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)
page 495.)
page
Inverter data processing time
∗1 data check time ∗2
= Waiting time +
page 490.)
495.)