Multi-Vendor Network; Choice Of Communications Functions; Remote I/O Communications; Message Communications - Omron 3G3MV-PDRT2 User Manual

Functions and System Configuration
Note 2. The CS Series includes the CS1G-CPU
CS1H-CPU
@@
CPU H, CJ1H-CPU
@@
The CVM1/CV Series includes the CV1000, CV2000, and CVM1 Programmable Control-
lers.
Note 3. C200HS PLCs support only remote I/O communications; they do not support message com-
munications.
■

Multi-vendor Network

The DeviceNet conforms to the DeviceNet open field network specification, which means that
devices (Masters and Slaves) produced by other manufacturers can also be connected to the Net-
work. The DeviceNet Communications Unit supports the DeviceNet AC/DC drive object.

Choice of Communications Functions

■
The DeviceNet Communications Unit/Card has various functions to choose from to suit the Inverter
applications.
• Supported Master Communications Methods
The DeviceNet Unit/Card supports 4 DeviceNet I/O connection methods: Poll, Bit Strobe, Cyclic, and
Change of State (COS). It is possible to set another connection method to be used simultaneously in
addition to the regular Poll connection. The COS method is a function that sends with a high priority
status only when there has been a change in the status of the Unit's ON/OFF data, so the communica-
tions volume is normally zero. The COS communication method is ideal for applications such as error
or alarm notifications.

• Remote I/O Communications

• Basic Remote I/O: These are the basic remote I/O functions defined in DeviceNet Specification.
• Standard Remote I/O: These are the factory settings for the DeviceNet Communications Unit/Card.
These settings are for DeviceNet compatibility.
• Special Remote I/O: These functions provide compatibility with earlier models (3G3MV-PDRT1-
SINV1 and 3G3FV-PDRT1-SINV1).
• Control I/O Remote I/O: These remote I/O functions support the functions and arrays that control
the I/O signals of SYSDRIVE Inverters. (These are proprietary OMRON functions and are not part
of the DeviceNet specifications.)
• Unit Status: These 16 bits of data (a proprietary OMRON function) include information on the In-
verter's fault code and the status of the monitoring functions. We recommend using this remote I/O
function with the COS communications method.
• Multi-function Input Monitor: This information is the result of a logical OR between the Inverter's ter-
minal block and the control I/O remote I/O's multi-function input signals. This function can be used
to monitor references to the various Inverter functions. Also, if a terminal block signal is set not to
function in the Inverter's parameters, the Inverter's terminal block can be used for sensor inputs to
the ladder program.

• Message Communications

Inverter control and monitoring are possible with DeviceNet explicit messages. (Messages conforming
to the DeviceNet AC/DC driver specifications can be used.)
The Parameter Read message (Class 64), which is a special OMRON function, can be used to read the
current value register in the Inverter. Message communications operate independently of the remote I/
O functions, so message communications and data that is not allocated to remote I/O can be used si-
multaneously with the remote I/O functions.
(-V1) Programmable Controllers. The CJ Series includes the CJ1G-
H, CJ1M-CPU
@@
@@ H, CS1H-CPU @@
, and CJ1G-CPU
@@ @@
Chapter 1
H, CS1G-CPU @@ (-V1), and
Programmable Controllers.
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