Omron CP1E CPU UNIT SOFTWARE - Related Auxiliary Area Bits and Words

14 Serial Communications
14-10
CP1E CPU Unit Software User’s Manual(W480)
14-3-4 Related Auxiliary Area Bits and Words
Address Name Details
A392.04 Built-in RS-232C Port
Communications Error Flag
• Turns ON when a communications error occurs at the built-in RS-232C
port. The port must be restarted when this flag turns ON.
• Turns ON when a timeout error, overrun error, framing error, parity error,
or BCC error occurs in Modbus-RTU Easy Master Mode.
A392.05 Built-in RS-232C Port Send
Ready Flag
(No-protocol mode)
ON when the built-in RS-232C port is able to send data in no-protocol
mode.
A392.06 Built-in RS-232C Port
Reception Completed Flag
(No-protocol mode)
ON when the built-in RS-232C port has completed the reception in no-pro-
tocol mode.
• When the number of bytes was specified: ON when the specified
number of bytes is received.
• When the end code was specified: ON when the end code is received or
256 bytes are received.
A392.07 Built-in RS-232C Port
Reception Overflow Flag
(No-protocol mode)
ON when a data overflow occurred during reception through the built-in
RS-232C port in no-protocol mode.
• When the number of bytes was specified:
ON when more data is received after the reception was completed but
before RXD was executed.
• When the end code was specified:
ON when more data is received after the end code was received but
before RXD is executed.
ON when 257 bytes are received before the end code.
If a start code is specified, ON when the end code is received after the
start code is received.
A392.12 Serial Option Port
Communications Error Flag
• ON when a communications error has occurred at the serial option port.
The port must be restarted when this flag turns ON.
• ON when a timeout error, overrun error, framing error, parity error, or
BCC error occurs in Modbus-RTU Easy Master mode.
A392.13 Serial Option Port Send
Ready Flag
(No-protocol Mode)
ON when the serial option port is able to send data in no-protocol mode.
A392.14 Serial Option Port
Reception Completed
Flag (No-protocol Mode)
ON when the serial option port has completed the reception in
no-protocol mode.
• When the number of bytes was specified: ON when the specified
number of bytes is received.
• When the end code was specified: ON when the end code is received or
256 bytes are received.
A392.15 Serial Option Port
Reception Overflow Flag
(No-protocol Mode)
ON when a data overflow occurred during reception through the serial
option port in no-protocol mode.
A393.00 to
A393.15
Built-in RS-232C Port
Reception Counter
(No-protocol Mode)
• Indicates (in binary) the number of bytes of data received when the
built-in RS-232C port is in no-protocol mode.
• The start code and end code are not included.
A394.00 to
A394.15
Serial Option Port
Reception Counter
(No-protocol Mode)
• Indicates (in binary) the number of bytes of data received when the
serial option port is in no-protocol mode.
• The start code and end code are not included.