Ar Area - Omron SYSMAC CPM2B Operation Manual

AR Area

4-4

AR Area

Word(s) Bit(s)
AR 00, 00 to 15 Not used.
AR 01
AR 02 00 to 07 Expansion Board Error Flags
These flags turn ON when an error occurs in any of the connected Expansion I/O Boards or Ana-
log I/O Boards. Flags starting from AR 0200 are allocated one at a time to the Boards in the order
that the Boards are connected to the CPU Board.
For Expansion I/O Boards, one flag is allocated to each Board. For Analog I/O Boards, the num-
ber of allocated flags depends on the model, as follows:
CPM2B-MAD21: 1 flag
CPM2B-MAD42: 2 flags
CPM2B-MAD63: 3 flags
08 to 11 Number of Boards Connected
12 to 15 Not used.
AR 03 to 00 to 15 Not used.
AR 07
AR 08 00 to 03 RS-232C Port Error Code (1-digit BCD)
0: Normal completion
1: Parity error
2: Frame error
3: Overrun error
04 RS-232C Communications Error Flag
Turns ON when an RS-232C port communications error occurs.
05 RS-232C Transmit Ready Flag
Turns ON when the PLC is ready to transmit data. (No-protocol and Host Link only)
06 RS-232C Reception Completed Flag
Turns ON when the PLC has completed reading data. (No-protocol only)
07 RS-232C Reception Overflow Flag
Turns ON when an overflow has occurred. (No-protocol only)
08 to 11 Peripheral Port Error Code (1-digit BCD)
0: Normal completion
1: Parity error
2: Frame error
3: Overrun error
12 Peripheral Port Communications Error Flag
Turns ON when a peripheral port communications error occurs.
13 Peripheral Port Transmit Ready Flag
Turns ON when the PLC is ready to transmit data. (No-protocol and Host Link only)
14 Peripheral Port Reception Completed Flag
Turns ON when the PLC has completed reading data. (No-protocol only)
15 Peripheral Port Reception Overflow Flag
Turns ON when an overflow has occurred. (No-protocol only)
AR 09 00 to 15 RS-232C Port Reception Counter (4-digit BCD)
Valid only when no-protocol communications are used.
AR 10 00 to 15 Peripheral Port Reception Counter (4-digit BCD)
Valid only when no-protocol communications are used.
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These bits mainly serve as flags related to CPM2B operation. These bits
retain their status even after the CPM2B power supply has been turned OFF
or when operation begins or stops.
Function
Section 4-4
79