Communication request data from the computer to the drive unit 1)
Format
1
ENQ
B
Reply data from the drive unit to the computer 3) (No data error detected)
Format
1
STX
E
STX
E1
STX
E2
Format
1
STX
E3
Reply data from the drive unit to the computer 3) (With data error)
Format
1
NAK
D
Send data from the computer to the drive unit 5)
Number of Characters
Format
1
C
ACK
(Without data error)
F
NAK
(With data error)
Indicate a control code
Specify the drive unit station numbers between H00 and H1F (stations 0 to 31) in hexadecimal.
When the Pr.123 PU communication waiting time is other than 9999, create the communication request data without "waiting time" in the data format. (The
number of characters decreases by 1.)
CR, LF code
When data is transmitted from the computer to the drive unit, codes CR (carriage return) and LF (line feed) are automatically set at the end of a data group
on some computers. In this case, setting must also be made on the drive unit according to the computer. Whether the CR and LF codes will be present or
absent can be selected using Pr.124 PU communication CR/LF selection.