SBC PCD1.Room - Value Ranges for Data Types; Resources Elements

Hardware Manual PCD1.M2110R1 │ Document 27-619 │ Version ENG 04 │ 2018-08-20
Saia-Burgess Controls AG
System Resources
CPU / Control Process Unit
3-10
3
3.6.2 ValueRangesforDataTypes
Model Comments
Integer – 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 for the conversion
of values in the Saia PCD
®
format
(Motorola Fast Floating Point,
FFTP) to IEEE 754 format and vice
versa are provided.
IEEE single precision,
IEEE double precision
±1.401 × 10
-45
to
3.403 × 10
38
±4.941
-324
to 1.798 × 10
308
double precision requires two
registers (64 bit)
3.6.3 Resourceselements
Model Number Addresses Comments
Flags (1 bit) 16’384 F 0…16’383 Flats are not transient, but
a transient range, starting from
Address0canbecongured.
Register (32 bit) 16’384 R 0…16’383 Forintegeroroatingpointvalues
Text/data blocks 8191 X or
DB 0…8190
For text and DB
Timer/counter (31 bit) 1600
1)
T/C 0…1599 The breakdown of timers
andcounterscanbecongured.
Timers count down periodically
under the control of the operating
system; the basic time unit can be
varied between 10 ms and 10 sec-
onds.
Constants with media code K user-dened 0…16’383 Values can be used in instructions
instead of registers
Constants without media code user-dened -2’147’483’648 to
+2’147’483’647
Can only be loaded to a register
with an LD command and cannot
be used in instructions instead of
registers.
1)
ToavoidunnecessaryloadontheCPU,nomoretimersshouldbeconguredthanrequired.