ICC

Speed Actual: Inverter operating speed in RPM. Maps to inverter register 1301 (output frequency). Because the inverter always provides its output frequency in units of Hz, the interface card applies a Hz-to-RPM conversion equation. The general Hz-to-RPM conversion equation is [output frequency x 120 / number of motor poles]. However, for simplicity the interface card always assumes that a 4- pole motor is in use, thereby reducing the applied conversion equation to [RPM = output frequency value x 30].

13.2.3 ControlLogix Examples: Setup

This section will demonstrate how to initially setup a ControlLogix PLC (such as a 1756-L61) coupled with a 1756-ENBT/A communication interface (adjust this procedure according to your specific equipment). Later sections will provide specific read/write examples using this configuration with I/O or explicit messaging.

1)Run RSLogix 5000, and create a new configuration.

2)To add a 1756-ENBT/A to your I/O configuration, first switch to offline mode.

3)Right click on the I/O Configuration node in the controller organizer view and choose “New Module…”

4)The “Select Module” window will open.

5)Under “Communications”, select “1756-ENBT/A”, and click OK. Refer to Figure 74.

Figure 74: Adding a New Module

6)The “New Module” window will open. Refer to Figure 75.

7)Assign the Ethernet module a name (we will use “EIP”) and an IP address, deselect “Open Module Properties”, and click OK.

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