Omron CP1E CPU UNIT SOFTWARE - Serial Option Port

14-27
14 Serial Communications
CP1E CPU Unit Software User’s Manual(W480)
14-5 Serial PLC Links
14
14-5-4 Operating Specifications
 Related Auxiliary Area Bits and Words
Built-in RS-232C Port
Serial Option Port
* 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 Built-in RS-232C Port Com-
municating with Polled Unit Flag (A393.00 to A393.07 for unit numbers 0 to 7) or the Serial Option Port Commu-
nicating with Polled Unit Flag (A394.00 to A394.07 for unit numbers 0 to 7).
Name Address Details Read/write Refresh timing
Built-in RS-232C Port
Communicating with
Polled Unit Flags*
A393.00 to
A393.07
When built-in RS-232C port is
being used in NT link mode, the bit
corresponding to the Unit perform-
ing communications will be ON. Bits
00 to 07 correspond to unit num-
bers 0 to 7, respectively.
ON: Communicating
OFF: Not communicating
Read • Cleared when power is turned ON.
• Turns ON the bit corresponding to the unit number
of the Polled Unit that is communicating via built-in
RS-232C port in NT link mode or Serial PLC Link
mode.
• Bits 00 to 07 correspond to unit numbers 0 to 7,
respectively.
Built-in RS-232C Port
Restart Bit
A526.00 Turn ON this bit to restart built-in
RS-232C port.
Read/write • Cleared when power is turned ON.
• Turn ON to restart built-in RS-232C port.
Note The bit is automatically turned OFF by the
system when restart processing has been
completed.
Built-in RS-232C Port
Error Flags
A528.00 to
A528.07
When an error occurs at built-in RS-
232C port, the corresponding error
bit is turned ON.
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.
Read/write • Cleared when power is turned ON.
• When an error occurs at built-in RS-232C port, the
corresponding error bit is turned ON.
• The flag is automatically turned OFF by the system
when built-in RS-232C port is restarted.
• In NT link mode, only bit 05 (timeout error) is
enabled.
• In Serial PLC Link mode, only the following bits are
enabled.
Errors at the Polling Unit:
Bit 05: Timeout error
Errors at Polled Units:
Bit 05: Timeout error
Bit 04: Overrun error
Bit 03: Framing error
Name Address Details Read/write Refresh timing
Serial Option Port
Communicating
with Polled Unit
Flags*
A394.00 to
A394.07
When serial option port is being
used in NT link mode, the bit corre-
sponding to the Unit performing
communications will be ON. Bits 00
to 07 correspond to unit numbers 0
to 7, respectively.
ON: Communicating
OFF: Not communicating
Read • Cleared when power is turned ON.
• Turns ON the bit corresponding to the unit number
of the Polled Unit that is communicating via serial
option port in NT link mode or Serial PLC Link
mode.
• Bits 00 to 07 correspond to unit numbers 0 to 7,
respectively.
Serial Option Port
Restart Flags
A526.01 Turn ON this bit to restart serial
option port.
Read/write • Cleared when power is turned ON.
• Turn ON to restart serial option port.
Note The bit is automatically turned OFF by the
system when restart processing has been
completed.
Serial Option Port
Error Flags
A528.08 to
A528.15
When an error occurs at serial
option port, the corresponding
error bit is turned ON.
Bit 8: Not used.
Bit 9: Not used.
Bit 10: Parity error
Bit 11: Framing error
Bit 12: Overrun error
Bit 13: Timeout error
Bit 14: Not used.
Bit 15: Not used.
Read/Write • Cleared when power is turned ON.
• When an error occurs at serial option port, the cor-
responding error bit is turned ON.
• The flag is automatically turned OFF by the system
when serial option port is restarted.
• In NT link mode, only bit 13 (timeout error) is
enabled.
• In Serial PLC Link mode, only the following bits are
enabled.
Errors at the Polling Unit:
Bit 13: Timeout error
Errors at Polled Units:
Bit 13: Timeout error
Bit 12: Overrun error
Bit 11: Framing error