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Appendix E
Multi-vendor Applications
This appendix provides precautions and reference material needed when using DeviceNet (CompoBus/D)
Units as DeviceNet components in a multi-vendor environment.
Connecting another Company’s Slaves to an OMRON Master
If a Slave has an EDS file, it can be installed in OMRON’s Configurator to enable handling it just like an
OMRON Slave. (OMRON’s Configurator already has installed all of the Slave EDS files currently registered
with the ODVA.)
In particular, be sure to determine the number of words in the OMRON Master Unit that the Slave requires for
input and output.
For Connection Object Interface 2 (Polled I/O Connection), the number of I/O words allocated in the OMRON
Master can be found from the “Produced Connection Size” and “Consumed Connection Size” as shown below.
Up to 32 words can be allocated to inputs and another 32 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 Interface 3 (Bit Strobed I/O Connection), the number of input words allocated in the
OMRON Master can be found 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 an OMRON Slave to another Company’s Configurator
When another company’s configurator (a device that makes environment settings on DeviceNet Masters 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 being used, we recommend creating an OMRON Slave EDS file (a file
that contains each Slave’s parameters and operating information). Refer to the OMRON Slave device profile as
well as the Configurator’s manual for details on creating an EDS file.