LG GLOFA-GM Series, Руководство пользователя, Страница: 208 / 358

Chapter 7 Communication function
7-89
1 Program upload command(PUX)
This uploads the program data after initialization of program upload. This service must be performed within 1 sec.
after program upload initialization service.
1) Request format(PC -> PLC)
Format
Name
Header
Station
No.
Command
Command
type
Frame No
(HEX 2 Bytes)
Tail Frame check
Frame (Ex.) ENQ H01 P(p) UX H0001 EOT BCC
ASCII value H05 H3031 H50(70) H5558 H30303031 H04
9 Frame No. indicates the number of frame in current proceeding.
9 Frame No. indicates the current frame number (4 Bytes) to be uploaded in the entire upload sequence. This
number must be incremental in sequence until the upload finishes completely. Frame No. increases in
sequence from 0001.
9 BCC : When command is one of lower case(p), only one lower byte of the value resulted by adding 1 byte
each to ASCII values from ACK to ETX is converted into ASCII, added to BCC, and sent.
2) Response format(for PLC of ACK response)
Format
Name
Header
Station
No.
Comma
nd
Comma
nd type
Frame No
(HEX 2 Bytes)
Number of data
(HEX 1 Byte)
Data Tail
Frame
check
Frame (Ex.) ACK H01 P(p) UX H0001 H1A ETX BCC
ASCII value H06 H3031 H50 H5558 H30303031 H3141 H03
9 Number of data indicates the number of data included in this frame.
9 Number of data can be included up to 120 Bytes in one frame.
9 For the last frame, frame No. is to be HFFFF(46, 46, 46, 46). If the last frame is responded, all upload
processes are finished.
9 BCC : When command is one of lower case(p), only one lower byte of the value resulted by adding 1 byte
each to ASCII values from ACK to ETX is converted into ASCII, added to BCC, and sent.
9 If frame No. is not HFFFF after receiving this frame, the upload command shall be sent within 1 sec.