Overview - Siemens SINUMERIK 840D sl Function Manual

When additional messages/alarms occur, the first seven are kept in the HMI, and the latest
message or the latest alarm is displaced from one that has just occurred according to the
following rules:
● System message/alarm displaces user message/alarm
● Messages/alarms with a higher priority displace those of a lower priority.
The first seven messages/alarms are kept in the display because it is very probable that these
define the cause of the problem and the following are just of a secondary nature. However, if
one or several messages/alarms are acknowledged and therefore cleared, then a
corresponding number of alarms/messages that have been received move up in the HMI.
14.6.4 PLC axis control
14.6.4.1

Overview

Target
The PLC can control eight axes or spindles via data blocks of the user interface; the axis/spindle
is specified by its DB number:
● DB380x PLC → NCK interface
● DB390x NCK → PLC interface
● DB390x Axis index: 0 ≤ x ≤ 7, whereby axis index = axis number-1
The following functions are supported:
● Positioning axes
● Spindle positioning
● Rotate spindle
● Oscillate spindle
● Indexing axes
References:
● Function Manual, Extended Functions; Positioning Axes (P2) and Indexing axes (T1)
● Function Manual, Basic Functions; Spindles (S1)
Precondition
The axis to be controlled must be assigned to the PLC. An axis can be interchanged between
NC and PLC using the user interface "
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Axis interchange " (DB3800.DBB8/DB3900.DBB8).
P4: PLC for SINUMERIK 828D
14.6 Function interface
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