What Happens On Warm Restart (Power On); Special Case "Parking Axis; Absolute Encoder Error - Siemens SINUMERIK 840C Installation Instructions Manual

Hide thumbs Also See for SINUMERIK 840C:

Table of Contents

12 Functional Descriptions

12.11.1 SIPOS absolute encoder up to SW 4

12.11.1.4 What happens on warm restart (POWER ON)

When NC MD 1808* bit 0 "Axis with absolute encoder" is set, NC MD 1808* bit 3 "Absolute

offset valid" is checked for the relevant bits. If both bits are set, the axis-specific interface

signal "Reference point reached" is set on warm restart.

The axis-specific interface signal "Parking axis" deletes the signal "Reference point reached"

even for an axis with a SIPOS absolute encoder.

The absolute encoder errors are displayed axis-specifically in the control with the error

message "Absolute encoder defective".

The exact type of error is displayed in the "Service number" line in the Service status display

menu. The error number is displayed.

Error numbers are explained in the section "Absolute encoder errors".

When the absolute encoder is first switched on, various absolute encoder numbers are

displayed for a period of approx. 10 minutes. This is caused by the back-up battery of the

absolute encoder which only establishes error-free communication with the control after a

certain charge time.

All absolute encoder errors are transmitted from the absolute encoder to the control on

start-up. It is not possible to acknowledge the absolute encoder errors (e.g. using the

reset key). The control can only be informed that the error has been eliminated after a

renewed POWER ON.

The specified axis numbers must be consecutive, i.e. no gaps in the numbering are

More user manuals on

ManualsBase.com

6FC5197- AA50

SINUMERIK 840C (IA)

Simodrive 611-d