LS SV-iS7 Series - Exception Frame Handling

iS7 Ethernet Option Manual
19
(3) Except Frame
Except Frame is for the response of the Server in case of an error
occurred in the execution of the frame requested by a Client.
Exception Frame Composition
Exception Code Type
Error Frame
Length
Value
Error Code
1bytes
0x80 + Requested
function code from client
Exception Code
1bytes
0x0000 ~ 0xFFFF
Exception Code Type
Code
Description
ILLEGAL FUNCTION
0x01
When unsupported function is
requested
ILLEGAL DATA
ADDRESS
0x02
Request or modification of the
data in unused address
ILLEGAL DATA VALUE
0x03
When trying to modify data to
a value out of the allowable
range
SLAVE DEVICE
FAILURE
0x04
Server has an error (Error in
CAN communication with
Inverter, error in Option
initialization, failure in data
communication with Inverter)
SLAVE DEVICE BUSY
0x06
Server is unable to respond
because it is executing
another process (Inverter
parameter initializing, initial
setting of Option, etc.)
WRITE PERMITION
ERROR
0x20
When trying to change a
parameter which is prohibited
from changing.
(A unique code of LS
Inverters)