Quantum NOE Global Data Configuration
Original instructions
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Introduction
Global data configuration is carried out in the network configuration as well as the data editor. The variables for the publish/subscribe procedure are configured in the data editor.
The screen shot shows the network configuration global data configuration settings:
Parameter description:
Parameter
Description
Health time out
After this time period expires, the received data becomes invalid.
Group address
Class D multicast IP address. All nodes in the global data procedure use the same multicast address for distributing or receiving data. The address range is: 224.0.0.0 to 239.255.255.255.
Distribution period
Time after which the data is received or sent. Minimum scan time of the PLC.
Group name
Logical name. Defines the varibale allocation to different communication configurations in the variable editor.
Health bit block
Address for retrieving the status information of the global data procedure.
Multicast filtering
Activates an Ethernet module that supports multicast filtering. From the drop down list, select:
  • None: disable both GMRP & IGMP
    (Data will be sent to all end devices in the network.)
  • GMRP
    Make sure your client, server and switches, and routers support and enable GMRP.
  • IGMP V1
    Make sure your client, server and switches, and routers support and enable IGMP.
Note: The following modules support IGMP V1:
  • 140 NOE 771 01 V4.4 or later
  • 140 NOE 771 11 V4.4 or later
  • 140 CPU 651 50/60 V2.7 or later
NOTE: The IGMP and None features are only available in Unity 4.1 or later.
NOTE: Unity Pro is the former name of Control Expert for version 13.1 or earlier.
NOTE: A Quantum PLC does not update health bits in STOP mode.
The screen shot shows an image of the data editor:
Parameter description:
Parameter
Description
Name
Variables symbols
Type
Variable type
Address
Variable address
Global Data
Type of Global Data Variable. Options: No/Publish/Subscribe
Group
Group name for allocating the variables of the existing network description. When creating the different Ethernet networks, a logical connection is arranged here between the network and the variable declaration.
ID
Variable ID