Omron CJ - REFERENCE MANUAL 02-2010 Reference Manual page 872

3. Instructions
Flags
Name
Error Flag
Related Auxiliary Area Words and Bits
RS-232C incorporated in the CPU Unit
Port
CPU Bus Unit's built-in RS-232C Port
Port 1 of Serial Communications Board (Unit Version 1.2 or Later)
Port
Serial Communications Board port 1
Port 2
Port
Serial Communications Board port 2
Name
Ports 1 and 2 Inner Board Service
Disabled Flag
Related PLC Setup Settings for the CPU Unit's Built-in RS-232C Port
CX Programmer settings
836
Label
ER • ON if the CPU Unit's RS-232C port is specified as the send port, but no-protocol mode is not set in
the PLC Setup.
• ON if one of the Serial Communication Board's serial ports is specified as the send port, but no-pro-
tocol mode is not set in the port's allocated DM Setup Area.
• ON if the value of C is not within range.
• ON if the value for N is not between 0000 and 0100 hex.
• ON if a send is attempted when the Send Ready Flag is OFF. (The Send Ready Flag is A39205 for
the CPU Unit's RS-232C port, A35605 for Serial Communications Board port 1, or A35613 for Serial
Communications Board port 2.)
• ON (ER Flag in interrupt tasks) if a TXD(236) or RXD(235) instruction is being executed for the Serial
Communications Board in the cyclic task, the cyclic task is interrupted, and another TXD(236) or
RXD(235) instruction is executed for the Serial Communications Board in the interrupt task.
• ON if a TXD(236) was executed for a serial port on a Serial Communications Board that was being
restarted.
• OFF in all other cases.
Address
A392.05
Address
A356.05
Address
A356.13
Address
A424.04
Operation
Contents
ON when data can be sent in the no-protocol mode.
Contents
ON when data can be sent in the no-protocol mode.
Contents
ON when data can be sent in the no-protocol mode.
Contents
ON when TXD(236) is executed for a Serial Communications Board that
does not support no-protocol mode (a Board without a version number).
CS/CJ/NSJ Series Instructions Reference Manual (W474)