Devicenet I/O Link Unit - Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual

DeviceNet I/O Link Unit

3-4

DeviceNet I/O Link Unit

DeviceNet slave
Master PC (CS Series with fixed allocations)
CPU Unit
I/O memory
Outputs
CIO 50
CIO 51
Inputs
CIO 350
CIO 351
The CPM1A or CPM2A PCs can function as slaves to a DeviceNet master when
a DeviceNet I/O Link Unit is connected. The DeviceNet I/O Link Unit establishes
an I/O link of 32 inputs and 32 outputs between the master and the PC.
A maximum of 3 DeviceNet I/O Link Units, can be connected to a CPM2A or
CPM1A to create I/O Links for up to 192 points (96 inputs and 96 outputs).
PC supporting DeviceNet master,
e.g., CS, C200HX/HG/HE (-Z),
CVM1, CV-series, etc.
DeviceNet Master Unit
or DeviceNet Unit
DeviceNet transmission path
CPM1A or CPM2A
CPU Unit
From the standpoint of the CPU Unit, the 32 input bits and 32 output bits allo-
cated to the DeviceNet I/O Link Unit are identical to input and output bits allo-
cated to Expansion I/O Units even though the DeviceNet I/O Link Unit does not
control external inputs and outputs. The input and output bits allocated to the
DeviceNet I/O Link Unit are one side of an I/O link between the slave CPU Unit
and the CPU Unit to which the Master Unit is connected.
DeviceNet
Master Unit
Unit No. 0
32 bits
32 bits
Note Refer to the DeviceNet Slaves Operation Manual (W347) for details on Device-
Net networks.
Each Unit enables remote I/O
communications for 32 input
and 32 output points as a De-
viceNet slave.
CPM1A-DRT21
DeviceNet I/O Link Unit
CPM1A or CPM2A
CPU Unit with 30 I/O points
I/O memory
Inputs
32 bits
IR 002
IR 003
32 bits
Output
IR 012
IR 013
Section 3-4
DeviceNet slave
DeviceNet
I/O Link Unit
Node
number:
0
219