TCP/IP Properties
Original instructions
About us
Introduction
The read-only information on the TCP/IP page monitors the IP parameters that were configured in Control Expert.
Use the channel Configuration tab of the module to edit the IP addressing settings to use in Static configuration mode.
Access the Configuration Tab
Access the channel Configuration tab for the BMENOC0321 control network module:
Step
Action
1
In the Project Browser, double-click Project → Configuration → PLC bus.
2
In the PLC Bus dialog box, right-click the BMENOC0321 control network module and click Open.
Result: The configuration window for the module is displayed.
3
Select Channel 0 to display the Configuration tab.
Configured Addresses
The BMENOC0321 control network module uses the scanner IP address, gateway IP address, and subnetwork mask configured in this Configuration tab:
IP Parameter
Description
Module IP Address
This 32-bit identifier consists of a network address and a host address that are assigned to a device that is connected to a TCP/IP Internet network through the Internet Protocol (IP).
Sub-Network Mask
This 32-bit value hides (or masks) the host portion of the IP address to set the network address of the module.
Gateway IP Address
When necessary, this device address serves as a gateway to other parts of the network.
Hot Standby Considerations
In a Hot Standby system, distributed equipment uses the Main IP address setting of the CPU to communicate over an Ethernet network with the primary CPU.
NOTE: Configure the Main IP address in the IP Config tab for the M580 CPU.
On switchover, the Main IP address setting is automatically transferred from the former primary CPU to the former standby CPU (now the new primary CPU). Similarly, on switchover, the Main IP address + 1 setting is automatically transferred from the former standby CPU to the new standby CPU.
In this way, the configured links between the distributed equipment and the primary CPU do not require editing in the event of a switchover.
In an M580 Hot Standby system, the standby BMENOC0321 module uses the same IP+1 address as the BMENOC0301/11 module on the local rack. Confirm that you configure the IP address used in the BMENOC0301/11 module differently than the IP address of the BMENOC0321 module (for the control network and the fieldbus network when IP forwarding is enabled). Use an Ethernet network manager tool to verify the system is working.
NOTE:
  • BMENOC0301/BMENOC0311: A switchover does not affect the assignment of IP address A or IP address B. These assignments are made exclusively by means of the rotary switch on the back of the CPU and are not affected by a change in primary or standby Hot Standby status.
  • BMENOC0321: IP address A and B are not defined.
Default Address Configurations
The BMENOC0321 module uses a default address configuration when it is not configured or when a duplicate IP address is detected. The default address is based on the MAC address of the module and makes it possible for several Schneider Electric devices to use their default network configuration on the same network. The module uses these default address configurations:
Default Address
Default Address
Main IP address
(see note)
control network:
169.254.10.MAC
Ethernet RIO (device) network:
169.254.20.MAC
extended DIO network:
169.254.30.MAC
Subnetwork mask
255.255.255.0.
Gateway address
The default gateway address is not identical to the default IP address.
NOTE: These addresses use the right-most octet of the MAC Address and use the subnet mask 255.255.255.0.
The Ethernet communication module provides these basic services when it uses the default IP address (and the services are enabled in the configuration):
Duplicate Address Checking
NOTICE
UNEXPECTED EQUIPMENT BEHAVIOR
Confirm that each module has a unique IP address. Duplicate IP addresses can cause unpredictable module/network behavior.
Failure to follow these instructions can result in equipment damage.
The module checks for duplicate IP addresses before it applies the configured IP address:
Response
Meaning
yes
Another network device is using the proposed IP address.
The module does not use the proposed IP address. It uses the default IP address.
no
The module uses the proposed IP address (along with the associated network parameters).
To improve performance during a network power-up operation, power up the network switches before you power up any system component (Ethernet communications module, Modicon M580 rack, PACs, etc.).
NOTE: When the entire network powers up at once, some switches may be slower to complete the process. The relatively slow switch response can cause some ARP messages to be dropped, resulting in an incomplete detection of duplicate IP addresses.