Coordination Via Plc - Siemens SINUMERIK 828D Function Manual

2.11

Coordination via PLC

With regard to their execution by the NC, synchronized actions that are not protected can be
locked. Either all synchronized actions in the channel can be locked together or individually
in the ID/IDS 1 - 64 area.
All, channel-specific
Lock all synchronized actions in the channel:
DB21, ... DBX1.2 = 1 (synchronized action off)
Individually, channel-specific
Synchronized actions that can be locked
The synchronized actions that can be locked are displayed via:
DB21, ... DBX308.0 - 315.7 == 1 (synchronized actions ID/IDS can be locked)
The update of the display must be triggered actively via the following signal from the PLC
user program:
DB21, ... DBX281.1 = 1 (request: Update synchronized actions that can be locked)
The NC then updates the display of the synchronized actions that can be locked and
acknowledges the update by resetting the trigger signal:
DB21, ... DBX281.1 = 0 (acknowledgement: Synchronized actions that can be locked
updated)
Lock synchronized actions
The corresponding lock bit must be set by the PLC user program for each synchronized
action that is to be locked in the channel:
DB21, ... DBX300.0 - 307.7 = 1 (lock synchronized action ID/IDS 1 - 64)
The following trigger signal must be set by the PLC user program as a request to the
channel to accept the current lock bits:
DB21, ... DBX280.1 = 1 (request: Accept synchronized actions to be locked)
The NC then accepts the synchronized actions to be locked in the channel and
acknowledges this by resetting the trigger signal:
DB21, ... DBX280.1 = 0 (acknowledgement: Synchronized actions to be locked accepted)
See also
Protected synchronized actions (Page 124)
Synchronized actions
Function Manual, 07/2012, 6FC5397-5BP40-3BA0
Detailed description
2.11 Coordination via PLC
127