IMO Precision Controls K7 Series User Manual page 153

Chapter8 Communication Function
(5) Example
This example supposes that the status of K7 Base Unit of station No. 1 is read.
① Computer request Format(PC → K7 Base Unit)
Format name Header
Frame (Example) ENQ
ASCII value H05
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
Station No. Command
H01 R(r)
H3031 H52(72)
Station No. Command Command type
H01 R(r) ST
H3031 H52(72) H5354
Station No. Command Command type
H01 R(r)
H3031 H52(72)
8-30
Command type
ST
H5354
Status data
See status data
Format
Error code
ST Error code (2)
H5354 Error code (4)
Tail Frame check
EOT BCC
H04
Tail Frame check
ETX BCC
H03
Tail Frame check
ETX BCC
H03