Using the PROFIBUS DP Communication Network

Overview

This chapter describes how to use the LTMR controller via the network port using the PROFIBUS DP protocol.

WARNING
LOSS OF CONTROL The designer of any control scheme must consider the potential failure modes of control paths and, for critical functions, provide a means to achieve an acceptable state during and after a path interruption. Separate or redundant control paths must be provided for critical control functions. System control paths may include communication links. Consideration must be given to the implications of unanticipated transmission delays or interruptions of the link. Observe all accident prevention regulations and local safety guidelines.* Each implementation of an LTMR controller must be individually and thoroughly tested for proper operation before being placed into service. Failure to follow these instructions can result in death, serious injury, or equipment damage.

WARNING

LOSS OF CONTROL

The designer of any control scheme must consider the potential failure modes of control paths and, for critical functions, provide a means to achieve an acceptable state during and after a path interruption.
Separate or redundant control paths must be provided for critical control functions.
System control paths may include communication links. Consideration must be given to the implications of unanticipated transmission delays or interruptions of the link.
Observe all accident prevention regulations and local safety guidelines.*
Each implementation of an LTMR controller must be individually and thoroughly tested for proper operation before being placed into service.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

WARNING
UNEXPECTED RESTART OF THE MOTOR Check that the PLC application software: Considers the change from local to remote control, Manages appropriately the motor control commands during those changes. When switching to the Network control channels, depending on the communication protocol configuration, the LTMR controller can take into account the latest known state of the motor control commands issued from the PLC and restart automatically the motor. Failure to follow these instructions can result in death, serious injury, or equipment damage.

WARNING

UNEXPECTED RESTART OF THE MOTOR

Check that the PLC application software:

Considers the change from local to remote control,
Manages appropriately the motor control commands during those changes.

When switching to the Network control channels, depending on the communication protocol configuration, the LTMR controller can take into account the latest known state of the motor control commands issued from the PLC and restart automatically the motor.

Failure to follow these instructions can result in death, serious injury, or equipment damage.