Omron CJ1W-PNT21, Инструкции по эксплуатации

Страница: 150 / 202

5-27
5 Operation
CJ-series PROFINET IO Controller Unit Operation Manual for NJ-series CPU Unit (W511)
5-5
Op
eratin
g th
e Net
w
o
rk
5
5-
5-1 U
ser
Access to th
e Networ
k
5-5 Operating the Network

Access to the Unit
There are several ways through which a user can have access and control over the PROFINET IO
network.
• Through a CPU user program: A user program can set the operational mode of the Unit, read IO
Controller and IO Device status / diagnostics information, and access the Unit’s Error Log. Fur-
thermore, the I/O data transferred between the PROFINET IO network and the CPU memory can
be used by the user program.
• Through CX-ConfiguratorFDT: The CJ1W-PNT21 IO Controller DTM Diagnosis User Interface
provides the user with buttons to set the operational mode of the Unit, read IO Controller and IO
Device status information, and access the Unit’s Error Log.
The CJ1W-PNT21 IO Controller DTM Diagnosis User Interface provides the means to control the
Master Unit directly from CX-ConfiguratorFDT running on a PC.

Access to the Unit
For access to the Unit’s controls, an online connection with the Unit has to be established first. To
achieve this perform the following sequence.
1
To go online, select the DTM in the Network view, and perform one of the following actions.
• Select the Device - Go Online option from the main menu, or the DTM context menu, or
• Select the Online button from the Tool Bar.
2
A communication channel will be opened through CX-Server. The name of the DTM in the Net-
work view, will turn to Italic font, to indicate that the Unit is online.
3
From the context menu, select the Diagnosis option. The DTM’s Diagnostics User Interface will
be displayed.
Precautions for Correct Use Precautions for Correct Use
Controlling the CJ1W-PNT21 PROFINET IO Controller Unit from the CJ1W-PNT21 IO Controller
DTM Diagnosis User Interface may interfere with a CPU user program running at the same time.
This can result in unexpected behavior. It is recommended to change the CPU mode to PRO-
GRAM mode to avoid this interference during the use of the CJ1W-PNT21 IO Controller DTM
Diagnosis User interface.
 I/O Data State
The PROFINET IO standard defines the Provider State of I/O data, further called the I/O Data state.
With this a PROFINET IO Controller or Device can signal if the data it provides is reliable, if it is Valid
or Invalid. I/O Data that is marked as invalid is discarded by the receiving device.
The Output Data state of the IO Controller is controlled in two ways:
5-5-1 User Access to the Network
5-5-2 Changing the Output Data State of the IO Controller