UD70

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Additional Information

The Control Techniques UD70 Large Option Module is a second microprocessor that de-restricts the Unidrive’s processing power when it performing a variety of duties in real time, such as timing function that are required for the correct operation of power devices. It is a compact microcomputer inside of a Large Option Module and can easily be installed in any classic Unidrive. The UD70 allows a programmer to write software or use pre-created software to optimize the flexibility of the drive.

The Emerson Industrial UD70 provides a dedicated RS323 programming port (Connection C) and a multi-purpose RS485 comms port (Connection D). Connections A and B provide connectors for speedy fieldbus communications options of those are chose to be fitted. Note: In all cases, the configuration parameters must be saved and the UD70 must be reset before the changes will take effect. To store the changes in Menu 17 settings, set #MM.00 to 1000 and press the red RESET button on the keypad. To reset the UD70, set #MM.00 to 1070 and press the red RESET button on the keypad.


The following lists the RS485 Port Communications Modes:

Standard CT ANSI Protocol

  • Mode 1 - 4 Wire ANSI Slave Mode (this is the default)
  • Mode 5 - 2 Wire ANSI Slave Mode

In these modes the UD70 will communicate using the standard ANSI protocol using either a 4 or 2 wire connection. The Unidrive will then be able to communicate with standard Control Techniques software packages, such as the Unisoft, MentorSoft, or SystemWise softwares.

Modbus RTU

  • Mode 13 - 4 Wire Modbus RTU Slave Mode
  • Mode 15 - 2 Wire Modbus RTU Slave Mode

In these modes the UD70 will communicate using the Modicon Modbus RTU protocol with either a 4 or 2 wire connection.

Modbus ASCII

  • Mode 14 - 4 Wire Modbus ASCII Slave Mode
  • Mode 16 - 2 Wire Modbus ASCII Slave Mode

In these modes, the UD70 will use the Modicon Modbus ASCII protocol to communicate. The max number of allowed registers that can be transferred in a single message is 20, and the range of allowed node addresses is 1 - 99.

Master / Slave

  • Mode 2 - Master Mode

In this mode, the node acts like a master continuously broadcasting a source parameter from the RS485 port at a data rate of 9600 bits per second.

  • Mode 3 - Slave Mode

In this mode, the node acts like a slave to receive the constant data stream sent by the Master. The data is then multiplied by the scaling parameter, written to the destination, as defined by the Pointer parameter.

Cascade

  • Mode 4 - Cascade Mode

This mode allows the UD70 RS485 ports to be cascaded, where each node is a slave to the upstream node and master to the downstream node.

I/O Box Mode

  • Mode 10 - I/O Box Mode

The UD70 does not have a dedicated port for use with an I/O box. The multi-purpose RS485 connection can be utilized to communicate directly with the I/O box by modifying it to use Mode 10 comms.

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mroStock is a premier Independent Electrical Supply Distributor, offering new, refurbished, repairs and exchanges for factory automation including, FANUC CNC, Siemens CNC, Modicon / Schneider Automation, Emerson / Control Techniques, and Yaskawa Industrial Automation.


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