Siemens SIMATIC PCS 7 Configuration Manual

It is also important to set the priorities 24 to 28 to a value of 2048. These contain OB 100 and
the asynchronous error OBs.
Configuration of the hardware (AS and I/O)
6.1 General CPU settings (H system and standard AS)
Compendium Part A - Configuration Guidelines (V8.2)
90 Configuration Manual, 08/2016, A5E38166869-AA

Siemens SIMATIC PCS 7 Specifications

General

Brand	Siemens
Model	SIMATIC PCS 7
Category	Control Systems
Language	English