Omron DEVICENET#05-2003 Operation Manual page 26

Functions
User-set Allocation
Communications Unit
node number 02
CIO 1950
CIO 1951
First word
CIO 1952
of node
CIO 1953
number 02
CIO 1954
First word
of node
CIO 1955
number 06
CIO 1956
CIO 1957
CIO 1958
The Configurator can be used to set the Communications Unit node number,
first word, and number of bytes to allocate (allocation size) for input block 1
and 2 and for output block 1 and 2, as shown in the following diagram.
Output block 1 or 2:
Input block 1 or 2:
First word
Example: CVM1/CV Series
DeviceNet Network
I/O Unit
#0
addresses
16 inputs
Allocation settings for node number 02
First word: CIO 1952
Allocation size: 2 bytes (1 word)
Allocation settings for node number 06
First word: CIO 1954
Allocation size: 10 bytes (5 words)
Output block 2
8output bits for
00 Hex
Unit #1
4 analog outputs
for Unit #1
16 input bits for Unit #2
Output bits in the order I/O Units are connected on
the I/O Unit interface
I/O Unit interface status (two words), and input bits in
the order I/O Units are connected on the I/O Unit
interface
Output block 1 or 2
Output bits on the
I/O Unit interface
#1 # 2
8 outputs 16 inputs
Allocation settings for node number 02
First word:
Allocation size: 8 bytes (4 words)
Allocation settings for node number 06
First word:
Allocation size: 6 bytes (3 words)
First word
of node
CIO 1900
number 06
CIO 1901
CIO 1902
Size of node
CIO 1903
number 02
First word CIO 1904
of node
CIO 1905
number 02
CIO 1906
Size of node
CIO 1907
number 06
Input block 1 or 2
First word
I/O Unit interface
status
Input bits on the
I/O Unit interface
Communications Unit
node number 06
#0 #1 #2
16 inputs 4-point 16 outputs
Analog
Output Unit
CIO 1904
CIO 1901
Input block 1
I/O Unit interface status
for node number 06
16 input bits for Unit #0
I/O Unit interface status
for node number 02
16 input bits for Unit #0
16 input bits for Unit #2
Section 1-2
Size of node
number 06
Size of node
number 02
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