Data Definitions - Mitsubishi Electric FR-XC-18.5K-PWM Instruction Manual

Parameter details
Data definitions
• Control code
Signal name
STX
ETX
ENQ
ACK
LF
CR
NAK
• Converter station No.
Specify the station number of the converter which communicates with the computer.
• Instruction code
Specify the processing request, for example, operation or monitoring, given by the computer to the converter. 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 converter. The definition and range of set data are determined
in accordance with the instruction code. (Refer to
• Time delay
Specify the delay time (time period between the time when the converter receives data from the computer and the time
when the converter 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 is set to other than "9999", the Pr.123 setting is effective as the
delay time.
Create the communication request data without "delay time" in the data format. (The number of characters decreases by 1.)
Computer
↓
Converter
Converter
↓
Computer
NOTE
• The data check time varies depending on the instruction code. (Refer to
108
PARAMETERS
ASCII code
H02 Start of text (Start of data)
H03 End of text (End of data)
H05 Enquiry (Communication request)
H06 Acknowledge (No data error detected)
H0A Line feed
H0D Carriage return
H15 Negative acknowledge (Data error detected)
page
Description
114.)
Converter data processing time
＝ Delay time∗1 + Data check time∗2
∗1 Number set in data × 10 (ms) when
∗2 About 10 to 30 ms. It varies depending
page 110.)
page
Pr.123 = "9999".
Pr.123 setting (ms) when Pr.123 ≠ "9999".
on the instruction code.
114.)