Pre-Work Preparations; Determination Of System Configuration; Confirmation Of Specifications - Omron WD30-ME Operation Manual

Pre-work Preparations

2-2

Pre-work Preparations

2-2-1

Determination of system configuration

System configuration
example
DeviceNet master unit
Model CS1W-DRM21
(NNODE=10)
Wireless network
Wireless slave
station
(WNODE=01)
(NNODE=00)
DeviceNet slaves
Model DRT1-ID08C
(NNODE=01)
DeviceNet slaves
Model DRT1-MD16C
(NNODE=03)
2-2-2

Confirmation of specifications

Confirmation of number of
IN/OUT points
Master unit
I/O
limitations
22
Items to be checked before performing installation work are explained
here.
A single wireless master station is limited to a maximum of 1,024 or 3,200
points, 512 (32 words) or 1,600 (100 words) points each for both IN and OUT.
In addition, the maximum configuration in a wireless network of master sta-
tions to slave stations is 1 to 32 or 1 to 64, and the maximum number of IN/
OUT points for the entire system is limited by the DeviceNet master unit. This
should be considered carefully when determining system configuration.
In this section, the operation procedure is explained using the following sys-
tem configuration as an example.
A communications power supply (Model S82K) has been purposely left out
DeviceNet network
Wireless mater station
(NNODE=00)
Wireless slave
station
(WNODE=02)
(NNODE=00)
DeviceNet slaves
DRT1-ID08C
Model DRT1-ID08C
NNODE=2
(NNODE=02)
DeviceNet slaves
Model DRT1-MD16C
(NNODE=04)
of the diagram above. It should be connected and supply power to the
DeviceNet network (both upper and lower) and should be connected with ter-
minating resistor. In addition, an external power supply should be connected
to the environment-resistant terminal of the DeviceNet slave.
Confirm that the number of IN/OUT points for each wireless master station is
no more than 512 or 1,600 (32 or 100 words).
In the example, the number of IN points is 8 × 4 = 32, and the number of OUT
points is 8 × 2 = 16.
A single wireless master station can control up to 512 points (or 1,600 points) for both input and
output, but the number of I/O points per node is limited by the master unit. Be careful not to
exceed the limit for I/O points per master unit node when constructing your system.
NNODE: DeviceNet node address
WNODE: Wireless node address
ModelDRT-ID08C: 8 environment-resistant
terminal inputs
ModelDRT1-MD16C: 16 environment-resistant
terminal inputs/outputs
Section 2-2