Emerson 400501-05, Epsilon Eb Digital Servo Drive installation manual Serial Communications

Epsilon Eb Digital Servo Drive Installation Manual

Serial Communications

Serial communications with the drive is provided through the female DB-9 connector located on the front of the drive. The serial interface is either three wire non-isolated RS-232C or two wire non-isolated RS-485. RS-485 is also available through the 44-pin Command Connector.

Figure 30: Epsilon RS-232 and RS-485 Internal Connections between the Command Connector and the Serial Communication Connector

When connecting the serial port of your PC to the serial port of the drive, verify that your PC’s ground is the same as the drive PE ground. Failure to do so can result in damage to your PC and/or your drive.

Note

Communication errors can usually be avoided by powering the computer or host device off of a convenience outlet that is mounted in the enclosure and whose neutral and ground are wired to the same single ended point ground that the drives and controllers are using.

This is sometimes benefical even with battery powered computers.

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