Cj1W-Pnt21 Profinet Io Controller Unit - Omron CJ1W-PNT21 Operation Manual

CJ1W-PNT21 PROFINET IO Controller Unit

2-2

CJ1W-PNT21 PROFINET IO Controller Unit

2-2-1 Features
PROFINET IO Controller
Unit
CPU Bus Unit
Unit Control and Status
I/O Data
I/O Data Exchange
FINS/UDP Interface
Facilitating IO Controller
Redundancy
Configuration
Troubleshooting Functions
The CJ1W-PNT21 PROFINET IO Controller Unit is a CPU Bus Unit, which can
be installed on a CJ1 PLC System. The CJ1W-PNT21 controls the data
exchange between PROFINET IO Devices and a CJ1 PLC system over a
PROFINET IO network. For an overview of the PROFINET IO technology refer
to Appendix A PROFINET IO Technology.
A total of up to 16 CPU Bus Units can be mounted on a CPU or Expansion
Rack. The total of 16 includes one or more PROFINET IO Controller Units in
addition to all other CPU Bus Units on the rack.
In total 25 control and status words are exchanged between the PROFINET IO
Controller Unit and a dedicated CIO memory area, of which the location is
related to the Unit Number of the PROFINET IO Controller Unit. The CIO
words provide status and diagnostics information on the Unit itself, the
PROFINET IO network and PROFINET IO Devices.
The maximum size of the I/O data exchanged between the CJ1W-PNT21 and
the PLC is 7168 words. The I/O data can be distributed over two input areas
and two output areas. Each of the input and output areas can be mapped to
any location in the DM Area, CIO Area, WR Area, HR Area, or the EM banks.
The PROFINET IO Controller initiates and maintains cyclic I/O data exchange
with its assigned IO Devices. In addition to the I/O data exchange, parameter
data and status information in a PROFINET IO Device can be accessed via
the PROFINET IO Controller Unit by acyclic messaging.
The PROFINET IO Controller Unit is provided with a FINS/UDP Interface
enabling the PROFINET IO Controller to access SmartSlice I/O Units using
FINS messaging. Additionally, any device supporting a UDP interface (such as
a Personal Computer using CX-Server Lite) can access the CJ1 PLC System
allowing remote stations to configure and monitor the PROFINET IO Controller
and the CJ1 PLC System. The maximum length of the FINS message is 1500
bytes.
To ensure a highly reliable implementation of the application, the PROFINET
IO Controller Unit and all PROFINET IO Devices offer the possibility of PLC
controller redundancy. To facilitate redundancy, two IO Controllers (one active
and one standby) in a networked connection CX-ConfiguratorFDT of I/O
Devices, ensures a fast change from active to standby PLC / IO Controller in
case of a single device or network malfunction.
Before the PROFINET IO Controller Unit is able to control the PROFINET IO
Devices, it must first be configured using the configuration program CX-
ConfiguratorFDT. Without this configuration, the Unit will not be able to start
any data exchange, neither send any acyclic messages.
The PROFINET IO Controller Unit provides a variety of troubleshooting
functions for prompt recovery in case of errors:
• Extensive self-diagnostic functions at startup.
• Data exchange flags indicating whether I/O data is being exchanged with
the IO Devices.
• Alarm flags indicating if new IO Device Alarm data is available.
Section 2-2
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