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DeviceNet I/O Link Units Section 7-7
Operating Procedure
Connecting the DeviceNet
I/O Link Unit
DeviceNet I/O Link Units are connected to the CP1L CPU Unit. For CP1L M-
type CPU Units, up to three Units can be connected, including any other
Expansion Units and Expansion I/O Units that are also connected. The Units
can be connected in any order from the CPU Unit.
I/O Allocation
I/O words are allocated to the DeviceNet I/O Link Unit in the same way as to
Expansion I/O Units or other Expansion Units, i.e., the next available input
and output words are allocated. As shown below, when “m” is the last allo-
cated input word and “n” is the last allocated output word, the DeviceNet I/O
Link Unit is allocated “m+1” as its input word and “n+1” as its output word.
In the following example, a CompoBus/S I/O Link Unit is connected as the first
Unit after the CP1L CPU Unit.
All of the words allocated to the DeviceNet I/O Link Unit are used to read and
write data between the CPU Unit of the DeviceNet I/O Link Unit and the CPU
Unit of the DeviceNet master, as shown in the following illustration.
Connect the Unit.
Determine the node
number of the DeviceNet
I/O Link Unit and set the
rotary switches.
Wire the DeviceNet
transmission path.
• Connect the DeviceNet I/O Link Unit.
• The node number should be a unique number between
0 and 63.
• Use the DIP switch to set the DeviceNet I/O Link Unit fs
baud rate and the status of output data when a
communications error occurs.
• Connect the DeviceNet I/O Link Unit to a DeviceNet
transmission path.
SYSMAC
CP1L
L1 L2/N
COM 01 03 05 07 09 11 01 03 05 07 09 11
00 02 04 06 08 10 00 02 04 06 08
10
00 01 02 03 04 06 00 01 03 04 06
COM COM COM COM 05 07 COM 02 COM 05
07
IN
OUT
DeviceNet I/O Link Uni
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