6 E3NW-CCL Function Specifications
6 - 10
E3NW-CCL CC-Link Digital Sensor Communications Unit User’s Manual (E431)
6-2
E3NW-CCL Functions
Application
If the number of used Sensor Units or Sensor Unit numbers are changed (e.g., when device options
are changed), the I/O assignments for the host device would also change, which requires
modifications to host programming.
By registering Dummy Sensors you can prevent these changes in I/O assignments and eliminate
the effect changing Sensor Unit numbers might have on host programming.
The following is an application example.
1. Registers are always allocated to detect 16 connected Amplifier Units.
2. If this function is not used and there are no Amplifier Unit reservations, the data for Amplifier
Units 1 to 3 are assigned to registers S1 to S3.
3. If Amplifier Units 4, 5, and 6 (temporary names) are added next to Amplifier Unit 2, the register
assignments will change. (The data for Amplifier Unit 3 will no longer be stored in register S3, but
in register S7 instead.)
You can use Dummy Sensors to prevent the location of existing Amplifier Unit data from being
moved when an Amplifier Unit are added as shown in the above example.
If you want to add Amplifier Units in the future as shown in the figure below, you can set Dummy
Sensors to registers S4 to S6 to eliminate the need for any changes to host device programming
when the additional Amplifier Units are actually installed.
6-2-1
Dummy Sensor Registration
Outline of Function
0015 hex to RWwn2 (Send Command)
0038 hex to RWwn3 (Command Data 1)
S1
S2
S3
S4 (Set as Dummy Sensor.)
S5 (Set as Dummy Sensor.)
S6 (Set as Dummy Sensor.)
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
Number of connected
Amplifier Units
Registers
8
3
0
0
Sensor
Amplifier Unit 1
Communications Unit
Sensor
Amplifier Unit 2
Sensor
Amplifier Unit 3
Sensor
Amplifier Unit 4
Sensor
Amplifier Unit 5
Sensor
Amplifier Unit 6
Sensor
Amplifier Unit 1
Communications Unit
Sensor
Amplifier Unit 2
Sensor
Amplifier Unit 3
Sensor
Amplifier Unit 1
Communications Unit
Sensor
Amplifier Unit 2
Sensor
Amplifier Unit 3
Dummy Unit 4
Dummy Unit 5
Dummy Unit 6
Sensor
Amplifier Unit 7
Distributed Sensor Unit
Sensor
Amplifier Unit 7
Distributed Sensor Unit
Sensor
Amplifier Unit 4
Distributed Sensor Unit
Basic System Configuration without Dummy Sensor Settings
Optional System Configuration
Basic System Configuration with Dummy Sensor Settings
No consideration
has been given
to the Sensor
Amplifier Units to
be added later.
Set up the Sensor Amplifier Units to
be added later as Dummy Sensors.
Sensor Amplifier Unit 7
is connected to a
Distributed Sensor Unit.
Sensor Amplifier Unit 4 is
connected to a Distributed
Sensor Unit.
Changes must be made
to host programming
when the configuration is
changed.
Changes to host
programming are not required
when the configuration is
changed.
Bit
How to Set Dummy Sensors
Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
Unit 6
Unit 7
Unit 8
Unit 9
09
00
01
02
03
04
05
06
07
08
11
12
13
14
15
10
Unit 10
Unit 1
1
Unit 12
Unit 13
Unit 14
Unit 15
Unit 16
Summary of Contents for E3NW-CCL
Page 1: ...E3NW CCL CC Link Digital Sensor Communications Unit User s Manual Cat No E431 E1 08 ...
Page 114: ...A Appendices A 34 E3NW CCL CC Link Digital Sensor Communications Unit User s Manual E431 ...
Page 116: ...B B 2 E3NW CCL CC Link Digital Sensor Communications Unit User s Manual E431 ...
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