LS Industrial Systems SV-iE5 Series, Руководство пользователя, Страница: 110 / 127

Chapter 14. COM Option (RS-485)
14-8
3.2) Negative Acknowledge Response:
NAK Drive No CMD Error code SUM EOT
15h “01” ~ “1F” “X” “**” “XX” 04h
1 byte 2 bytes 1 byte 2 bytes 2 bytes 1 byte
Total Byte = 9
4) Action Request for monitor register: Request for read of address registered by monitor register.
ENQ Drive No CMD SUM EOT
05h “01” ~ “1F” “Y” “XX” 04h
1 byte 2 bytes 1 byte 2 bytes 1 byte
Total Byte = 7
4.1) Acknowledge response:
ACK Drive No CMD Data SUM EOT
06h “01” ~ “1F” “Y” “XXXX…” “XX” 04h
1 byte 2 bytes 1 byte n * 4 bytes 2 bytes 1 byte
Total Byte= 7 + n * 4 = Max 23
4.2) Negative response:
NAK Drive No CMD Error code SUM EOT
15h “01” ~ “1F” “Y” “**” “XX” 04h
1 byte 2 bytes 1 byte 2 bytes 2 bytes 1 byte
Total Byte = 9
5) Error code
Error code Description
“IF” When master is sending codes other than Function code (R, W, X, Y).
“IA” When parameter address does not exist
“ID” When Data value exceeds its permissible range during ‘W’ (Write).
“WM”
When the specific parameters cannot be written during
‘
W’ (Write).
(For example, in the case of Read Only, Write disabled during Run)
“FE” When frame size of specific function is not correct and Checksum field is wrong.