Hardware manual PCD7.LRxx-PG5 room controller │ Document 27-653; version ENG07 │ 2019-03-21
Saia-Burgess Controls AG
System resources
Room controller/CPU
3-16
3
3.8 System resources
3.8.1 User program in block structure
The user program parts are stored by the programmer in blocks assigned accord-
ing to their function.
Type Number Addresses Remarks
Cyclical organisation blocks (COB)
2* 0...1 Main program elements
Exception/system-dependent
organisation blocks (XOB)
4 10, 12, 13, 16 Accessed by system
Program blocks (PB) 100 0...99 Subprograms
Function blocks (FB) 100 0…99 Subprograms with parameters
* When the device is programmed with Fupla, it automatically creates a COB in the
background. Thus, only 1 COB is available to the programmer. If programmed
exclusively with IL, both COB are available.
Program block structure
COB 1
Main and
system program blocks
Subprogram and
function program blocks
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