Omron CP1L CPU UNIT - 06-2007 Operation Manual page 497

DeviceNet I/O Link Units
DeviceNet master
I/O memory
CIO 0
CIO 1 (m)
32 bits
CIO 2 (m+1)
CIO 3 (m+2)
CIO 100
CIO 101 (n)
32 bits
CIO 102 (n+1)
CIO 103 (n+2)
Note
Determining the Node
Number and Making DIP
Switch Settings
Note
464
15 14 13 12 11 10 9 8
Do not use.
15 14 13 12 11 10 9 8
(1) The 32 bits each of I/O data are not always transmitted simultaneously.
In other words, 32 bits of data transmitted from the Master CPU Unit at
the same time will not always reach the CP1L CPU Unit simultaneously,
and 32 bits of data transmitted from the CP1L CPU Unit at the same time
will not always reach the Master CPU Unit simultaneously.
When the 32 bits of input data must be read together, modify the ladder
program in the CPU Unit receiving the data. For example, read the input
data twice in succession and accept the data only when the two values
match.
(2) Unused bits in the DeviceNet I/O Link Unit's output words can be used as
work bits if they are not used for output from the slave.
(3) Unused bits in input words cannot be used as work bits.
Setting Node Numbers
Use rotary switches SW2 and SW3 to set DeviceNet node number. The set-
ting range is from 00 to 63, and 64 to 99 cannot be set. Rotary switch settings
go into effect when the power is turned ON.
Setting range: 0 to 63 (Do not set 64 to 99.)
The actual range of node numbers that can be set depends on the type of
PLC to which the Master Unit is mounted, and on the Master Unit setting. For
details, refer to the DeviceNet DRT1-series Slaves Operation Manual.
Setting the DIP Switch (SW1)
Used to set the DeviceNet baud rate and the output hold function.
Baud Rate
Pin 1 Pin 2
OFF OFF 125 kbps
ON OFF 250 kbps
OFF ON 500 kbps
ON ON Not allowed.
7 6 5 4 3 2 1 0
Input Bits
CIO 0.00 to CIO 0.11: 12 bits
CIO 1.00 to CIO 1.11: 12 bits
CIO 2.00 to CIO 2.15: 16 bits
CIO 3.00 to CIO 3.15: 16 bits
7 6 5 4 3 2 1 0
Output Bits
CIO 100.00 to CIO 100.11: 8 bits
CIO 101.00 to CIO 101.11: 8 bits
CIO 102.00 to CIO 102.15: 16 bits
CIO 103.00 to CIO 103.15: 16 bits
Baud rate Max. transmission path length
500 m
250 m
100 m
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Section 7-7
CPU Unit
DeviceNet
I/O Link Unit
CPU Unit
DeviceNet
I/O Link Unit