Bosch CL300 - Page 67

SystemModules
FlexibleAutomation
4−15
4.2 Central Processing Units ZE 300/301
The ZE300 is used in the GG300/300−K Basic Unit. The ZE301 can be
used both in the GG300/300−K and the GG301/301−K Basic Units. The
ZE301 allows the use of intelligent system modules and remote expan
sion units.
4.2.1 Function
The ZE central processing unit is the heart of the CL300 Controller and
has the following functions:
D Reading of input data
D Decoding and processing of the PLC instructions in the user pro
gram
D Data output
D Management of the data supplied by intelligent modules
D Management of the addressed timers
D Monitoring of the operations initiated by the user
D Detection of interrupt signals