Communication Operation Presence/Absence And Data Format Types - Mitsubishi Electric FR-XC-18.5K-PWM Instruction Manual

Parameter details
Communication operation presence/absence and data format types
• Data communication between the computer and converter uses ASCII codes (hexadecimal codes).
• Communication operation presence/absence (with/without) and data format type (A to F) are as follows.
Data
Communication request: sent to the converter
a
from the computer in accordance with the user
program
b
Converter data processing time
Reply data from the
c
converter (Data a is
checked for an error.)
d
Computer processing delay time
Answer from computer in
response to reply data
e
(data c)
(Data c is checked for an
error.)
∗1
In the communication request data from the computer to the converter, the time of 10 ms or more is also required after an
acknowledgement (ACK) signal showing "No data error detected" is sent. (Refer to
∗2
Reply from the converter to the converter reset request can be selected. (Refer to
• Data writing format
Data a: Communication request data from the computer to the converter
Format
1
ENQ
A
∗1
ENQ
A1
∗1
Data c: Reply data from the converter to the computer (No data error detected)
Number of characters
Format
1
ACK
C
∗1
Data c: Reply data from the converter to the computer (Data error detected)
Format
1
NAK
D
∗1
∗1
A control code.
∗2
The converter station number is specified in hexadecimal in the range of H00 to H1F (stations No. 0 to 31).
∗3 Set the delay time. When Pr.123 PU 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.)
∗4 CR+LF code
When a computer transmits data to the converter, some computers automatically provide either one or both of the codes CR (carriage return)
and LF (line feed) at the end of a data group. In this case, the same setting is required for data sent from the converter to the computer. Use
Pr.124 PU communication CR/LF selection for the CR+LF code setting.
106
PARAMETERS
Operation
No data error
detected
∗1
(Request accepted)
Data error detected
(Request rejected)
No data error
detected
∗1
(No converter
processing)
Data error detected
(Converter outputs
data c again.)
2 3 4 5
Converter Instruction
station No. code
∗2
Converter Instruction
station No. code
∗2
2 3 4
Converter
∗4
station No.
∗2
Number of characters
2 3 4
Converter station Error
No. code
∗2
Parameter/
monitor Converter
write reset
A/
A1
With Without
C
D
With (10 ms or more)
Without Without
Without Without
Number of characters
6 7 8 9
Data
∗3
Data
∗3
5
∗4
Monitoring
A B
With
E /
C
∗2
E1
D
D
∗2
Without (C)
F
page 109.)
page 114.)
10 11 12
Sum
check
Sum
∗4
check
Parameter
read
B
With
E
D
Without (C)
F
13
∗4