Device List Configuration and Connection Summary
Original instructions
About us
Introduction
The Device List contains read-only properties that summarize these items:
Open the Page
Open the Device List page:
Step
Action
1
Open your Control Expert project.
2
Open the DTM Browser (Tools → DTM Browser).
3
In the DTM Browser, find the name that you assigned to the BMENOC0301/11 module.
4
Double-click the name of the BMENOC0301/11 to open the configuration window.
NOTE: You can also right-click on the module and scroll to Open to open the configuration window.
5
Select Device List in the navigation tree.
Configuration Summary Data
Select Device List and view the Configuration Summary table on the Summary tab to see values for these items:
Expand (+) the Input row to view the Input Current Size values:
Description
Source
This value is the sum of all Modbus request and EtherNet/IP connection sizes.
This value is configured in the General page for a selected distributed device and connection.
Expand (+) the Output row to view the Output Current Size values:
Description
Source
This value is the sum of all Modbus request and EtherNet/IP connection sizes.
This value is configured in the General page for a selected distributed device and connection.
The maximum size of the X Bus input or output memory variable is 8 KB (8,192 bytes). The variable contains a 16-byte descriptor followed by a value that represents the number of input or output data objects. Each data object contains a 3-byte object header followed by the input or output data. The number of data objects and the size of the input or output data depend on the configuration. The maximum overhead in the variable is 403 bytes (16 + 387), where 16 is the number of bytes in the descriptor and 387 is the product of 3 X 129, where 3 is the number of bytes in the header and 129 is the number of input or output objects (128 maximum scanned devices or local slaves that the BMENOC0301/11 module supports plus one (1) input or output object for the scanner DDDT). Therefore, maximum input or output current size is approximately 7.6 KB.
NOTE: The input current size also includes 28 words of scanner DDT input data. The output current size also includes 24 words of scanner DDT output data.
Expand (+) the Configuration Size row in the Connection Summary table to view these values:
Name
Description
Source
Maximum Number of DIO Devices
This value represents the maximum number of distributed devices allowed in the configuration.
capability of the module
Current Number of DIO Devices
This value is the number of active and inactive distributed devices and local slaves in the configuration.
number of devices in the Device List
Maximum Number of DIO Connections
This value represents the maximum number of connections that the Ethernet communications module can manage.
capability of the module
Current Number of DIO Connections
This value is the number of connections by active devices and local slaves in the configuration.
device configuration in the Control Expert Device Editor
Maximum Number of Packets
This is the maximum number of Ethernet I/O scanning packets per second that the Ethernet communications module supports.
capability of the module
Current Number of Input Packets
This is an estimate of the number of input packets per second that the current configuration generates.
device configuration in the Control Expert Device Editor
Current Number of Output Packets
This is an estimate of the number of output packets per second that the current configuration generates.
device configuration in the Control Expert Device Editor
Current Number of Total Packets
This is an estimate of the total number of Ethernet I/O scanning packets per second that the current configuration generates.
device configuration in the Control Expert Device Editor
Request / Connection Summary
Select Device List and view the Request / Connection Summary table on the Summary tab. The Control Expert DTM uses this information to calculate the total bandwidth that distributed devices consume:
Column
Description
Connection Bit
  • Connection health bits display the status of each device with one or more connections.
  • Connection control bits can be toggled on and off using object IDs.
Task
The task type (FAST, MAST).
Input Object
The input object number associated with the request or connection.
Output Object
The output object number associated with the request or connection.
Device
The device Number is used for the Health and Control Bit index.
Device Name
The label for the device in the Device List.
Type
The target device type:
Address
The target device IP address (except for local slaves).
Rate (msec)
The RPI (for EtherNet/IP) or the Repetitive Rate (for Modbus TCP).
NOTE: The Rate does not apply to local slaves.
Input Packets per second
The number of input (T->O) Ethernet packets per second generated by this request or connection.
Output Packets per second
The number of output (O->T) Ethernet packets per second generated by this request or connection.
Packets per second
The sum of input packets per second and output packets per second for the request or connection.
Bandwidth Usage
The total amount of network bandwidth (total bytes traffic) consumed by this request or connection.
Size In
The number of input words configured for this request or connection.
Size Out
The number of output words configured for this request or connection.