IMO Precision Controls K7 Series User Manual page 144

Chapter8 Communication Function
(5) Example
This example supposes that 2 byte HAA15 is written in D000 of station No. 1 and BCC value is checked.
① Computer request Format(PC → K7 Base Unit)
Station
Format name Header
No.
Frame (Example) ENQ H01
ASCII value H05 H3031
② For ACK response after execution of command (PC ← K7 Base Unit)
Format name Header
Frame (Example) ACK
ASCII value H06
③ For NAK response after execution of command(PC ← K7 Base Unit)
Format name Header
Frame (Example) NAK
ASCII value H15
Command Device
Command
type Length
w SB H06
H77 H5342 H3036 H254457303030
Station No. Command
H01 W
H3031 H77
Station No. Command Command type
01 W
H3031 H77
8-21
Number of
Device
data
%DW0000 H01 HAA15056F
H414131353
H3031
0353646
Command type
SB
H5342
Error code
SB Error code (2)
H5342 Error code (4)
Frame
Data Tail
check
EOT BCC
H04
Tail Frame check
ETX BCC
H03
Tail Frame check
ETX BCC
H03