SBC PCD2.M5 Series - System Resources; Program Blocks; Computation Ranges for Count Types; Media

Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 12│2014-07-24
Saia-Burgess Controls AG
PCD2 CPUs
PCD2.M5_ Classic CPUs and expansion housings
3-5
3
3.3 System resources
3.3.1 Programblocks
Type Quantity Addresses Remarks
Cyclic organization blocks
(COB)
32*(16) 0...31(0...15) Main program elements
Exception/system-dependent
organizationblocks(XOB)
32 0...31 called from the system
Programblocks(PB) 1000*(300) 0...999(0...299) Sub-programs
Functionblocks(FB) 2000*(1000) 0...1999(0...999) Sub-programs with
parameters
Sequentialblocks(SB)
total 6000 steps and transitions
each(withPG5≥1.3and
rmwareversion≥≥xxx)
96 0...95
for Graftec programming
of sequential processes
*Thisinformationisvalidforrmware1.10.16andlater.Beforethisversion16COBs,300PBsand1000FBswere
supported.
3.3.2 Computationrangesforcounttypes
Type Remarks
Integers – 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
Instructions are provided to convert
valuesheldinSaiaformat(Motorola
FastFloatingPoint,FFP)toIEEE754
format and vice versa.
3.3.3 Media
Type Quantity Addresses Remarks
Flags(1bit) 14’336**
(8192)
F0...8191 Bydefault,agsarenotvolatile,but
avolatilerangecanbecongured,
beginning with address 0
Registers(32bit) 16384 R 0...16383 Forintegeroroatingpointvalues
Text/data blocks
8191
XorDB
0...8190
The texts 0..3999 are always written
to the same memory area as the user
program.
Where the user memory has been
extended, the base memory can be
conguredtoholdRAMtextsandDBs.
The texts and DBs held in this way have
addresses≥4000
Timers/counters(31bit) 1600
1)
T/C 0...1599 The breakdown of timers and counters
iscongurable.Timersareperiodically
decrementedbytheoperatingsystem;
the basic time unit can be set between
10 ms and 10 seconds
Constants with media
code K
any Values0...16383;maybeusedinin-
structions instead of registers
Constants with no
media code
any Values - 2,147,483,648 to
+2,147,483,647. Can only be loaded
into a register with an LD command,
and cannot be used in instructions
instead of registers.
1)Thenumberoftimersconguredshouldbeonlyasmanyasrequired,topreventunnecessaryCPUloading
**Sincermware1.14.2314’336agsaresupported,beforeitwas8192.Inordertouseags>8191PG52.6.150is