Siemens SINUMERIK 802D sl Instruction Manual

Starting Up the PLC
11.3 PLC alarms
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SINUMERIK 802D sl Instruction Manual (BA), 05/2005 Edition
6FC5 397-0CP10-1BA0
S NC Start inhibited: Once the user program is executed, the PLC signals the “NC start
inhibited” signal to the NCK via the user interface.
S SHOWALARM: This alarm has no alarm response.
11.3.1 General PLC alarms
Note to the reader
SINUMERIK 802D sl Diagnostics Guide
11.3.2 User alarms
The user interface ‘’ 1600xxxx ‘’ provides the subareas (0, 1) for the user to define user
alarms.
S Subarea 0: 8 x 8 bits to set the user alarms (0 –>1 edge)
Byte 0 : Bit 0 => 1st user alarm “ 700000 ”
Byte 1 : Bit 0 => 9th user alarm “ 700008 ”
Byte 7 : Bit 7 => 64th user alarm “ 700063 ”
A new user alarm is activated with the relevant bit (subarea 0) via a 0/1 edge.
S Subarea 1: User alarm variables
Subarea 1 is intended for additional user information; it can only be read/written as a dou-
bleword.
S Subarea 2: Alarm response
Byte 0 : Bit 0 => NC start inhibited
Bit 1 => Read-in disable
Bit 2 => Feed disable for all axes
Bit 3 => EMERGENCY STOP
Bit 4 => PLC STOP
By using subarea 2, the user can evaluate the active alarm responses; this subarea is
read-only.
Self-clearing user alarms must be canceled by the user by resetting the appropriate bit in
subarea 0 (1 –> 0 edge).
Other user alarms are canceled by the PLC after detecting the relevant cancel condition for
the appropriate user alarms. If the bit of the user alarm, however, is still present, the alarm
recurs.
Siemens Automation Parts

Siemens SINUMERIK 802D sl Specifications

General

Brand	Siemens
Model	SINUMERIK 802D sl
Category	Controller
Language	English