Acknowledge Esr Reactions - Siemens SINUMERIK 840D Function Manual

R3: Extended stop and retract
16.2 ESR executed autonomously in the drive
System variable
The system variables can be evaluated in the part program / synchronized action, for example,
in order to trigger the drive-autonomous ESR (see Section "Triggering ESR via system variable
(Page 621)") or to acknowledge the ESR reactions triggered in the drive (see Section
"Acknowledge ESR reactions (Page 622)").
Interrelationship between signals
MELDW
MELDW.Bit 9 $AA_ESR_STAT.Bit 2
(r0887.12)
MELDW.Bit 4 $AA_ESR_STAT.Bit 3
(r0056.15)
MELDW.Bit 2 $AA_ESR_STAT.Bit 4
(r2199.0)
16.2.8

Acknowledge ESR reactions

Acknowledging axis-specific drive-independent ESR reactions must be programmed on a user-
specific basis in a part program/synchronized action. After the ESR reaction in the drive has
been completed, an edge change must be generated in the system variables
$AA_ESR_ENABLE: 1→0→1. In order that the drive-integrated ESR reactions can be
retriggered, the system variable $AN_ESR_TRIGGER must also be reset to a value of 0.
622
System variable NC/PLC interface signal Meaning
DB31, ... DBX95.2
DB31, ... DBX95.1
DB31, ... DBX95.3
ESR: Reaction triggered or generator operation
active (r0887.12)
ESR: DC link undervoltage (p1248)
ESR, generator operation: Speed lower than min‐
imum (p2161)
Function Manual, 06/2019, A5E47437747B AA
Axes and spindles