SBC PCD3 Series User Manual

Saia-Burgess Controls AG
Hardware manual for PCD3 series │ Document 26-789 ENG19│ 2018-06-29
System resources
PCD3.Mxxx0 Classic CPU and expansion enclosure
3-6
3
3.3 System resources
More detailed descriptions of the following three subsections can be found in
manual 26-732.
3.3.1 Program blocks
Type Number Addresses Notes
Cyclical organization blocks (COB) 32
(16)*
0…31
(0...15)*
Main program components
Exception/system dependent
organization blocks (XOB)
32 0…31 Accessed by the system
Program blocks (PB) 1000
(300)*
0...999
(0…299)*
Subprograms
Function blocks (FB) 2000
(1000)*
0...1999
(0…999)*
Subprograms with
parameters
Sequential blocks (SB) a total of 6000
steps and 6000 transitions
1.10.16)
96
(32)*
0…95
(0…31)*
For Graftec programming of
sequential processes
* Thisinformationisvalidforrmware1.10.16andlaterversions.Priortothisrelease,16COBs,300PBsand1000FBsweresupported.
3.3.2 Value range of the number types
Type Range Notes
Whole numbers – 2’147’483’648 to + 2’147’483’647 Format: Decimal, binary, BCD or hexadecimal
Floating point
numbers
– 9.223’37 × 10
18
to – 5.421’01 × 10
-20
+ 9.223’37 × 10
18
to + 5.421’01 × 10
-20
Commands for converting values in SBC
(Motorola Fast Floating Point, FFP) format to
IEEE 754 format and vice versa are available
3.3.3 Media
Type Number Addresses Notes
Flags (1 bit) *14‘336
(8192)
F0…14‘335
(F0…8191)
Bydefault,allagsarenon-volatile,buta
volatile range starting at address 0 can be
congured
Register (32 bit) 16‘383 R 0…16‘383 For integer or
owpointvalues
Text/data blocks 8191 X or DB
0…8191
Texts 0…3999 are always stored in the same
memory area as the user program. If the user
memory is expanded, the base memory can be
conguredtostoreRAMtextsandDBs.The
available texts and DBs have addresses ≥ 4000
Timer/counter (31 bit) 1600
1)
T/C 0…1599 The breakdown of timers and counters can
becongured.Thetimersareperiodically
decremented by the operating system, the time
base can be set in the range of 10 ms to 10 s
Constants with media code K Any Value range 0…16‘383 can be used in
commands instead of registers
Constants without media code Any Value range –2’147’483’648 to +2’147’483’647.
Can only be loaded into a register with an LD
command and not used in place of registers in
commands
1)Thenumberoftimersshouldonlybeconguredashighasnecessary,otherwisetherewillbeanunnecessaryCPUload.
**Fromrmware1.14.23,14’336agsaresupported,priortothatiswas8192.Tousemore>8191ags,PG52.0.150isrequired.

SBC PCD3 Series Specifications

General

Brand	SBC
Model	PCD3 Series
Category	Controller
Language	English