Hardware manual PCD7.LRxx-PG5 room controller │ Document 27-653; version ENG07 │ 2019-03-21
Saia-Burgess Controls AG
LEDs/operating states
Room controller/CPU
3-17
3
3.8.2
Data types/value ranges
Type
Area
Remarks
Integer
-2,147,483,648 to
+2,147,483,647
Format: Decimal, binary, BCD or
hexadecimal
IEEE single precision
±1.401 × 10
-45
to 3.403 × 10
38
3.8.3
Resource elements
Type
Number Addresses
Remarks
Flags (1 bit)
4050
F 0…4049
Registers (32 bit)
4050
R 0…4049
For integer or floating point values
Text/data blocks
100
X or
DB 0...99
For text and DB
Timer/counter (31 bit)
400
1)
T/C 0…399
The timer and counter breakdown
can be configured. Timers are
periodically counted down by the
operating system; the base time
unit can be set between 10 ms and
10 seconds.
Constants with media code K any
0...16,383
These values can be used in in-
structions in place of registers
Constants without media code any
-2,147,483,648 to
+2,147,483,647
Can only be loaded in a register
with an LD command and cannot
be used in instructions in place of
registers.
1)
The number of configured timers should not be greater than necessary in order to avoid unneces
-
sary CPU loads
3.8.4
RTC/internal hardware clock
If the PCD7.LRxx-P5 is switched off, the power reserve for the internal hardware
clock (RTC) is ensured by a supercap for max. 72 h.
The PCD7.LRxx-P5 room controllers are maintenance-free and do not need any
batteries.
