Omron CPM2C-S100C Operation Manual page 141

Remote I/O Communications
Word Bits
DM 6605 00 to 03 DeviceNet Read/Write area setting
0 (Hex): Read (IN) IR 020 to IR 027; Write (OUT) IR 030 to IR 037
1 (Hex): Use settings in DM 6606 to DM 6609.
04 to 07 Transmission of CPM2C-S status to the DeviceNet Master
0 (Hex): Attach status information ahead of data.
1 (Hex): Do not attach status information ahead of data.
08 to 15 Not used.
DM 6606 00 to 07 DeviceNet I/O Link Write
(OUT) area settings
(Master → CPM2C-S)
08 to 15
DM 6607 00 to 15
DM 6608 00 to 07 DeviceNet I/O Link Read
(IN) area settings
(CPM2C-S → Master)
08 to 15
DM 6609 00 to 15
Note
Function
Data area
01 (Hex): I/O area 1 (IR 000 to IR 049)
02 (Hex): I/O area 2 (IR 200 to IR 227)
03 (Hex): DM area (DM 0000 to DM 2047)
04 (Hex): LR area (LR 00 to LR 15)
05 (Hex): HR area (HR 00 to HR 19)
07 (Hex): Timer/counter area (TC 000 to TC 255)
Number of bytes (see note 1)
01 to 40 (Hex) (equivalent to 0 to 64 decimal)
Starting word address
0000 to 07FF (Hex) (equivalent to 0000 to 2047 decimal)
Data area
01 (Hex): I/O area 1 (IR 000 to IR 049)
02 (Hex): I/O area 2 (IR 200 to IR 227)
03 (Hex): DM area (DM 0000 to DM 2047)
04 (Hex): LR area (LR 00 to LR 15)
05 (Hex): HR area (HR 00 to HR 19)
06 (Hex): AR area (AR 00 to AR 23)
07 (Hex): Timer/counter area (TC 000 to TC 255)
Number of bytes (see note 1)
01 to 40 (Hex) (equivalent to 0 to 64 decimal)
Starting word address
0000 to 07FF (Hex) (equivalent to 0000 to 2047 decimal)
1. A system failure error (PC Setup setting error) will occur if the number of
bytes is set to 00 (Hex) for both the write and read areas.
2. Data written through DeviceNet is valid even if the PC is in PROGRAM
mode, so outputs may go ON when the PC is in PROGRAM mode if output
bits are allocated to the DeviceNet I/O Link Write area. To prevent outputs
from going ON while the PC is in PROGRAM mode, do not allocate output
bits directly to the DeviceNet I/O Link Write area.
3. If words in any areas other than the IR area (IR 000 to IR 227) or LR area
(LR 00 to LR 15) are allocated to the I/O Link Read area, the data may not
be cleared even when the power is interrupted, possibly causing data from
immediately before power interruption to be read by the master. If this cre-
ates a potential problem, use the following measures to eliminate the prob-
lem.
• When starting in RUN or MONITOR mode, configure the ladder pro-
gram so that the Read area is rewritten with appropriate data.
• When starting in PROGRAM mode, it will not be possible to take direct
measures at the slave. Monitor the status at the master and do not
read the data when the operating mode is PROGRAM mode.
When a fatal error occurs at a slave, the master may read data from imme-
diately before the error. In this case also, monitor the status at the master
and do not read the data.
Section 6-2
Default
0 (Hex)
0 (Hex)
0 (Hex)
00 (Hex)
00 (Hex)
0000 (Hex)
00 (Hex)
00 (Hex)
0000 (Hex)
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