Omron CQM1H series Operation Manual page 69

Word Allocation
4-1-4 Word Allocation Example
I/O type CPU internal
input word
Output ---
Input 000
CQM1H/CQM1
RS-485 total length 200 m
#8
16-point
Word 001 input
Bit address (IN)
00100 to 00115
In this example, the Master and output Expansion Master Unit 1 are set to 2
words and the Slaves comprise five 16-point Units and two 4-point Units. The
Slave I/O bit addresses corresponding to Unit I/O words and Slave address al-
locations are shown in the table below.
Master Slave address
word
100 #0 (16-point output model)
101 #4 (16-point output model)
001 #8 (16-point input model)
002 #12 (16-point input model)
In the following example, the Slaves are connected in order of ascending Slave
address. However, the connection order is independent of the Slave address.
The only requirement is that they are connected in series.
Set the Slave connected at the end as the terminator, regardless of its Slave ad-
dress.
Master (I/O set to 2 words)
Expansion Master Unit 1
(output set to 2 words)
#12 #16
16-point
Word 002 input Word 102
Bit address (IN)
00200 to 00215
Expansion
Master Unit 1
word
102
103
---
#0 #4
16-point
Word 100 output Word 101
Bit address (OUT)
10000 to 10015
#17
4-point
output Word 102
Bit address (OUT) Bit address (OUT)
10200 to 10203 10204 to 10207
Section 4-1
Slave address
#16, #17 (two 4-point
Output Units)
#20 (16-point Output Unit)
16-point
output
Bit address (OUT)
10100 to 10115
Set as terminator
#20
4-point 16-point
output Word 103 output
Bit address (OUT)
10300 to 10315
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