Festo Электромотор MTR-DCI User Manual

Page 163

5. Commissioning

5-75

Festo P.BE-MTR-DCI-PB-EN en 1209a

5.8.6

Direct mode: Specification of a position or force

In the “Operation enabled” status, a positioning task is for-
mulated directly in the I/O data, which are transmitted via the
fieldbus. The nominal values for position or forces are man-
aged in the PLC.

The function is used in the following situations:

–

Moving to any position within the effective stroke

–

The target positions are unknown during planning or
change frequently (several different workpiece positions)

A positioning profile formed by linking records can be imple-
mented externally through the master.

Sequence for specification of a position:

1. The user sets the desired nominal position value and the

positioning mode (absolute/relative) in the PLC output
data.

2. With a rising edge on START (CPOS.B1), the controller

accepts the nominal position and starts the positioning
task.

3. After the start you must wait for MC before a new start

can be made.

4. When the nominal position is reached, MC (SPOS.B2) is

set.