Omron CJ2 CPU UNIT SOFTWARE User Manual page 463

Related Auxiliary Area Flags and Words
Name
Serial Port PT Commu-
nications Flags*
Serial Port Restart Bit
Serial Port Error Flags
Serial Port Settings
Changing Flag
* In the same way as for the existing 1:N NT Link, the status (communicating/not communicating) of the Polled Unit
in Serial PLC Links can be checked from the Polling Unit (CPU Unit) by reading the Serial Port PT Communica-
tions Flags (A393.00 to A393.07 for unit numbers 0 to 7).
CJ2 CPU Unit Software User's Manual
11 Programming Devices and Communications
Address Function
A393.00 to The corresponding bit will be ON when the
A393.07 serial port is communicating in NT Link Mode
or in Serial PLC Link Mode.
Bits 0 to 7 correspond to Units 0 to 7.
ON: Communicating
OFF: Not communicating
A526.00 Turn ON to restart the serial port.
A528.00 to These flags indicate what kind of error has
A528.07 occurred at serial port.
Bit 0: Not used.
Bit 1: Not used.
Bit 2: Parity error
Bit 3: Framing error
Bit 4: Overrun error
Bit 5: Timeout error
Bit 6: Not used.
Bit 7: Not used.
A619.02 Turns ON when the communications parame-
ters are being changed for the serial port.
ON: Changing
OFF: Not changing
Read/Write Refresh timing
Read • Cleared when power is turned
ON.
• Updated if the serial port is in NT
Link or Serial PLC Link mode.
• Bits 0 to 7 correspond to Units 0
to 7.
Read/Write • Cleared when power is turned
ON.
• Turn ON this bit to restart the
serial port in any mode except for
Toolbus mode.
Note: This bit is turned OFF auto-
matically when the restart
processing is completed.
Read/Write • Cleared when power is turned
ON.
• These flags indicate what kind of
error has occurred at the serial
port.
• They are automatically turned
OFF by the system when the
serial port is restarted.
• Only the following bits are valid in
Serial PLC Link Mode.
Polling Unit:
Bit 5: ON for timeout error.
Polled Units:
Bit 3: ON for framing error.
Bit 4: ON for overrun error.
Bit 5: ON for timeout error.
Read/Write • Cleared when power is turned
ON.
• Turns ON when the communica-
tions parameters are being
changed for the serial port.
• Turns ON when the CHANGE
SERIAL PORT SETUP
(STUP(237)) instruction is exe-
cuted.
• Turns OFF when changing the
parameters has been completed
normally.
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