Emerson Process Management 2400S manual 8.10Configuring digital communications

Optional Configuration

8.10Configuring digital communications

The digital communications parameters control how the transmitter will communicate using digital communications. The following digital communications parameters can be configured:

•DeviceNet node address (MAC ID)

•DeviceNet baud rate

•DeviceNet configurable input assembly

•Modbus address

•Modbus ASCII support

•IrDA port usage

•Digital communications fault action

•Fault timeout

8.10.1DeviceNet node address

The default node address for the Model 2400S DN transmitter is 63. The valid range of node addresses is 0–63.

The DeviceNet node address can be set using digital communications hardware switches or a DeviceNet tool.

Note: You cannot set the node address from ProLink II or the display.

To set the node address using digital communications hardware switches:

1.Remove the transmitter housing cover as described in Section 3.3.

2.Identify the two addresses switches (the left and center switches) on the user interface module of your transmitter (see Section 3.3). The left switch, labeled MSD (Most Significant Digit), sets the first digit of the node address, and the center switch, labeled LSD (Least Significant Digit), sets the second digit.

3.For each switch, insert a small blade into the slot to rotate the arrow to the desired position. For example, to set the node address to 60:

a.Rotate the arrow in the left switch to point to the digit 6.

b.Rotate the arrow in the center switch to point to the digit 0.

4.Replace the transmitter housing cover.

5.Either power cycle the transmitter or send a Reset service (0x05) to the Identity Object (0x01), Instance 1.

Note: The new node address is not implemented until Step 5 is completed.

To set the node address using a DeviceNet tool:

1.Use the digital communications hardware switches to set the node address to any value in the Program range (values 64–99). This essentially disables the digital communications hardware switches and allows external control of the node address.

2.Set the MAC ID in the DeviceNet Object (0x03), Instance 1, Attribute 1, data type USINT.

3.Either power cycle the transmitter or send a Reset service (0x05) to the Identity Object (0x01), Instance 1.

Note: If the digital communications hardware switches are not set to 64 or greater, the Set service will return the error code 0x0E (Attribute Not Settable).

Note: The new node address is not implemented until Step 3 is completed.

70 Micro Motion® Model 2400S Transmitters for DeviceNet™