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DanLoad8000 driver implements communication with Daniel Measurement and Control on TCP/IP or serial networks.Device compatible with CDU Protocol

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Overview

The CDU Protocol Driver facilitates communication between a Control and Display Unit (CDU) and connected systems over TCP/IP or serial interfaces. It enables data exchange by structuring messages based on defined polling cycles, allowing operators to send commands and receive responses. The driver supports ASCII-based interactions, simulating button inputs for remote control. It ensures proper data transmission by managing block sizes, delimiters, and device addressing.

CDU protocol driver implements communication with any device using CDU protocol DanLoad8000 driver implements communication with Daniel Measurement and Control on TCP/IP or serial networks.

Configuration

Channels Configuration

Settings

Serial configures settings like BaudRate, Comm, and DataBits, while TCP does not require specific settings, but both require the following:

• ServerMode: True

• AcceptUnsolicited: True

• ListeningPort: This port has to be different for each channel you create. For example. if you have 2 CDU channels, one has to be for example 502, and the other 503, as long as those ports are not being used.

Serial and MultiSerial channels, default configuration:

Protocol Options

• BlockSize: Defines the maximum amount of items per group, the default value is 250.

If the communication points are configured in sequence and the BlockSize equals to 250, the driver can create the internal groups with 125 Registers or 2000 Coils.

• Encoding:  Determines how the information will be packed into the message fields and decoded. The options are:
  • RTU: Remote Terminal Unit mode, where each 8–bit byte in a message contains two 4–bit hexadecimal characters
  • ASCII: The message is encoded in ASCII mode, where each 8–bit byte in a message is sent as two ASCII characters
  • RTU TCP: The default transmission mode when the message is carried on a DanLoad8000 TCP/IP network. It contains information to allow the recipient to recognize message boundaries even if the message has been split into multiple packets

• SingleWrite: Indicates the driver behavior for the writings with only one item:
  • Use block write : The driver uses the 0x0F command for Coils, or the 0x10 command for Holding Registers
  • Use single write: The driver uses the 0x05 command for Coils, or the 0x06 command for Holding Registers
• SlaveID: Defines the driver Server address in the DanLoad8000 Network.

Settings

• Serial and MultiSerial channels:

Default configuration:

DataBits: 8.

StopBits: 1 if parity is used, 2 if no parity.
Set the other fields according to your Serial or MultiSerial port configuration.

• TCP/IP channels:

NodeConnections: Defines the maximum number of parallel requests that will be sent to each node (asynchronous communication).

Nodes Configuration

Station Configuration 

SlaveId: Set this field with the address of the slave device in the DanLoad8000 network. They can be addressed from 1 to 247 for serial nodes, or 0 to 255 for TCP/IP nodes. The address 0 is used for the broadcast.

• Serial channels:

Station syntax: <SlaveId>
Ex: 1

• MultiSerial channels:

Station syntax: <ComPort>;<SlaveId>

Where : <ComPort> = COM Port of the slave device in the DanLoad8000 network (default is com1).
Ex: com1;1

• BaudRate: 9600
• DataBits: 8
• StopBits: 1
• Parity: None

Nodes

Station Configuration

Serial channels:

• TCP/IP channels:

Station syntax: <IP address>;<Port number>;<SlaveId>

Where : <IP address> = IP address of the slave device in the

DanLoad8000 network < Port number > = TCP port where the slave device is listening (default is 502).
E.g.Ex:   192.168.1.101 1;502;1

Points Configuration

The syntax for the ASCII DanLoad8000 communication points is: <SequenceId>:<SizeOf> <Operand><Address>

Where:

• <SequenceId> indicates the data order where the TX message will be created:
• <SizeOf> indicates the characters amount from the configured tag

Usually is used as “0:46”, so it will starts to read in index 0, and read 46 char, this is, the whole message.

Access Point

Not necessary to do any setting.

• <Operand>: indicates the memory area
• <Address>: indicates the data address in the memory area, from 1 to 65535

E.g.: 40001 (Operand = Holding Register, Address = 1)

Driver Revision History

Usage

How to use CDU in the equipment?

When you want to move in the menu, you just have to write the ASCII value below in the tag. In summary, if you want the action of “Pushbutton”, you write the “Ascii Value”.

Driver Revision History

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