Omron NX102-12 Series User Manual

8-3
CIP Communication Server Function
The CIP Communication Server function is exclusively available for the NJ/NX-series Controllers.
This function executes services for a specified self-contained object in the CPU Unit after receiving the
CIP messages from external devices.
This section provides information on CIP messages structure along with information about how to use
CIP messages in a program that runs on a computer or by other means and uses the CIP Communi-
cation Server function to perform the following: -Writing CIP objects and the values of variables to the
NJ/NX-series Controller, -Reading CIP objects and the values of variables from the NJ/NX-series Con-
troller.
To read and write CIP objects or the values of variables between NJ/NX-series Controllers, use the
CIP communications instructions.
Refer to 8-2 CIP Message Communications Client Function on page 8-4 for information on how to use
CIP communications instructions for CIP message communications.
Computer
NJ/NX-series Controller NJ/NX-series Controller
You can read and write variables with
CIP communicatio
ns instructions.
Request
Response
The writing results of the
specified CIP object or
variable, or the value that was
read from the specified CIP
object or variable are stored
in the response.
The variable to access
is specified in the
request path of the
CIP object or the
explicit message
to read or write data.
Variable Variable
8-3-1
CIP Message Structure for Accessing CIP Objects
This section shows how to specify messages to access CIP objects.
The CIP objects to be accessed are expressed by connecting the segments
defined in the CIP Common Specifications in the request path field in a CIP explicit message.
Example: Performing the Reset service (0x05) to the Instance (01 hex) of the Identity object (class: 01
hex)
8 CIP Message Communications
8-39
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
8-3 CIP Communication Server Function
8
8-3-1 CIP Message Structure for Accessing CIP Objects

Omron NX102-12 Series Specifications

General

Brand	Omron
Model	NX102-12 Series
Category	Controller
Language	English