Comtrol Modbus TCP User Guide User Manual
Page 43
DeviceMaster UP Modbus/TCP User Guide: 2000447 Rev. I
Chapter 3. Embedded Configuration Pages- 43
Device TCP Connection Configuration
Listen
Enabling this setting allows the device to connect to the DeviceMaster UP via an
Ethernet TCP/IP socket.
•
Not selected - Disables listening; the DeviceMaster UP will not accept connection
attempts.
•
Selected - Enables listening; the DeviceMaster UP will accept connection
attempts from the specified Listen Port.
Listen Port
This is the socket port number on the DeviceMaster UP the application will connect
to if the Device Listen Enable is selected.
Connect To Mode
This setting specifies if and how the DeviceMaster UP attempts to connect to the
device at the specified Connect IP Address and Connect Port.
•
Never - The DeviceMaster UP will not attempt to connect to the device.
•
Connect-Always - The DeviceMaster UP will attempt to connect to the device
until a connection is made.
•
Connect-On-Data - The DeviceMaster UP will not attempt to connect to the
device until there is data to send to the device. Once data is received for the
device, the DeviceMaster UP will attempt to connect to the device until a
connection is made.
Connect Port
The device socket port number the DeviceMaster UP will connect to if the Device
Connect To Mode is set to either Connect-Always or Connect-On-Data.
Connect IP Address
The device IP address the DeviceMaster UP will connect to if the Device Connect To
Mode is set to either Connect-Always or Connect-On-Data.
Disconnect Mode
This setting specifies if and how the DeviceMaster UP disconnects from the device.
•
Never - The DeviceMaster UP will not disconnect from the device.
•
Idle - The DeviceMaster UP will disconnect when there has been no transmit or
received data between the device and PLC/application for a specified Idle Timer
period.
Idle Timer
The idle timeout period in milliseconds that is used if the Device Disconnect Mode is
set to Idle.
Message Transfer Settings
Raw-Data Message
Transfer Mode
If you select Data-Stream (default), the serial port will operate in Data-Stream mode,
see
If you select Command/Response, the serial port will operate in Command/Response
mode, see
2.2.4.2. Command/Response Mode
Cmd/Resp Response
Timeout
The Command/Response mode response timeout setting. The DeviceMaster UP will
wait for the response(s) until this time has elapsed before transmitting another
message.
The default is 200 msec.
Cmd/Resp Age Time,
Discard Responses
After (seconds)
The Age Time, or elapsed time, when responses destined for Modbus interface(s) are
discarded. This typically occurs when a Modbus controller stops communicating and
leaves a response in the response queues. The default is 10 seconds.
Cmd/Resp Expected
Responses Per
Command
The number of responses expected for each transmitted command. The default is 1.
Device TCP Connection Configuration (Continued)