Chapter 8 Communication Functions
8-16
(3) Response format (ACK response)
Format name Header Station No. Command Command type Tail Frame check
Frame (Example)
ACK H20 W(w) SS ETX BCC
ASCII value H06 H3230 H57(77) H5353 H03
Item Explanation
BCC When command is lowercase(r), only one lower byte of the value resulted by adding 1 Byte
each to ASCII values from ACK to ETX is converted into ASCII and added to BCC, and sent.
(4) Response format (NAK response)
Format name Header Station No. Command Command type Error code
(Hex 2 Byte) Tail Frame
check
Frame (Example)
NAK H20 W(w) SS H4252 ETX BCC
ASCII value H15 H3230 H57(77) H5353 H34323532 H03
Item Explanation
BCC When command is lowercase(r), only one lower byte of the value resulted by adding 1 Byte
each to ASCII values from NAK to ETX is converted into ASCII and added to BCC, and sent.
Error code Hex and 2 bytes(ASCII code, 4 bytes) indicate error type. For the details, see 8.1.8 Error
codes.