440
End Codes Section 6-2
A response will not be received with some errors, regardless of the command.
These errors are listed in the following table.
Error PC operation
Parity, overrun, or framing error during com-
mand reception. (Same even for commands
address to other Units.)
The Communications Error Flag will be turned ON, an error code will be
registered, and receptions will be reset. (The error will be cleared auto-
matically if communications restart normally.)
The Communications Error Flags are as follows:
Peripheral port: AR 0812
Built-in RS-232C port: AR 0804
Serial Communications Board port 1: IR 20104,
Serial Communications Board port 2: IR 20112
A command is received that does not have the
@ character at the beginning of the first frame.
The command will be discarded.
Incorrect node number (Not a local unit or over
30)
The command will be discarded.
The data in an intermediate or final frame for
multiframe writes is longer than 2 bytes.
An FCS error will occur.
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