Multi-Vendor Applications - Omron CJ1W-DRM21 Operation Manual

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Multi-vendor Applications

This appendix provides precautions and reference material needed when you use DeviceNet (Compo-
Bus/D) Units as DeviceNet components in a multi-vendor environment.
Connecting another Company's DeviceNet Slaves to an OMRON Master
For connecting another Company's DeviceNet Slaves to an OMRON Master, consult the document
attached to another Company's DeviceNet slave.
If a Slave has an EDS file, you can install it in the CX-Integrator to enable handling it just like an
OMRON DeviceNet Slave.
In particular, be sure to determine the number of words in the OMRON Master Unit that another
Company's DeviceNet Slave requires for input and output.
With Connection Object instance 2 (Polled I/O Connection) of another company's DeviceNet slave,
you can find the number of I/O words allocated in the OMRON Master from the "Produced Connec-
tion Size" and "Consumed Connection Size" as shown below. You can allocate up to 100 words to
inputs and another 100 words to outputs.
Produced Connection Size
This is the amount of memory (usually in bytes) allocated as input.
Consumed Connection Size
This is the amount of memory (usually in bytes) allocated as output.
If the connection size is an even number of bytes, the number of allocated words is: (bytes ÷ 2).
If the connection size is an odd number of bytes, the number of allocated words is: [(bytes +1) ÷ 2)].
If the connections size is zero (0), no words are allocated.
For Connection Object instance 3 (Bit Strobed I/O Connection) of the DeviceNet Slave, you can find
the number of input words allocated in the OMRON Master from the "Produced Connection Size" as
shown below.
Produced Connection Size
This is the amount of memory (usually in bytes) allocated as input.
If the connection size is an even number of bytes, the number of allocated words is: (bytes ÷ 2).
If the connection size is an odd number of bytes, the number of allocated words is: [(bytes +1) ÷ 2)].
Connecting to another Company's Configurator
When another company's configurator (a tool that makes environment settings on DeviceNet Mas-
ters and Slaves) is connected, it will be able to read settings from OMRON Masters and Slaves but
not change them.
When another company's configurator is used, we recommend you create an OMRON DeviceNet
Slave EDS file (a file that contains each Slave's parameters and operating information). Refer to the
OMRON DeviceNet Slave device profile as well as the Configurator's manual for details on creating
an EDS file.
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
Appendices
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