Omron V430-F Series User Manual For Communication Settings page 95

IO Devices
I/O devices consist of DAPs and I/O modules.
The functions and properties of these devices are described in a GSD file.
• DAP (Device Access Point): This is an Ethernet access point and is used by means of a communication
program.
• I/O Module: Consists of the Slot, Subslot, and Index below. An I/O module has one or multiple slots.
• Slot: Indicates the location of the I/O module in the I/O device.
• Subslot: I/O interface inside the slot. This defines data types such as bit data and byte data, and the
meanings of the data types.
• Index: Data in a Subslot.
The above information is described in the GSD file of the V430-F, and the I/O controller uses the GSD
file of the V430-F to build the system.
Additional Information
When an I/O device is used in PROFINET, the GSD file that describes the device functions and
properties is used to configure the network configuration settings.
When the V430-F is used in PROFINET as an I/O device, the GSD file of the V430-F must be
installed in the engineering tool.
Data Communication in PROFINET IO
For an I/O controller and I/O device to communicate, a connection called an AR (Application Relation)
must first be established between the two devices. When the AR connection is established, data
communication between the I/O controller and I/O device takes place by means of a CR (Communication
Relation) that defines the content of the data communication. An I/O device can establish AR relations
with multiple communication devices. In addition, multiple CR relations can be defined inside one AR.
By establishing multiple CR relations inside one AR, communication that requires multiple profiles or
differing Subslots can be performed. It is also possible to set a cycle time for each CR or I/O.
AR
External device
V430-F)
(PLC
External device
(PLC V430-F)
CR is classified into IO data CR, record data CR, and alarm CR. Within the IO data CR, data communication
is performed for each refreshing task period. Within CRs other than the IO data CR, communication
takes place between the periodic data communications. Within the record data CR, the IO controller will
send commands to the IO device(s) at any time. IO device(s) will send back responses to the IO controller.
V430-F Series Autofocus Multicode Reader User Manual for Communication Settings
4 Controlling Operation and Data Output with PROFINET
I/O controller
PLC
CR
Input Area
Communication
Cycle
CR
Output Area
(control input,
Communication
commands, etc.)
Cycle
Ethernet (PROFINET)
I/O device
V430-F
Cyclic Output Data
(control output,
measurement results, etc.)
Cyclic Input
Data
4
4-5