Maximum number of i-bus-modules, Limits of 5v supply, Control terminal limits (fc/ft) – Siemens FC700A User Manual
Page 21: Limitation of visible texts on a fc700a, Limitation of visible texts on a ft700a, 2 control terminal limits (fc/ft), 5 maximum number of i-bus-modules, 6 limits of 5v supply, 1 limitation of visible texts on a fc700a, 2 limitation of visible texts on a ft700a
Limitations of C-Bus participants
21
Siemens Building Technologies
007836_a_en_--.doc
Fire & Security Products
03.2004
8.1.5 Maximum
number of I-Bus-modules
Table 'Maximum number of I-Bus-modules'
Station type
FC700A
I-Bus modules
... 16 1) ... 8 2) 3)
1) Limited by software
2) Value based on experience (depends on cabinet size and/or 5V current consumption)
3) Battery charging unit E3C011 counts as one I-Bus module
8.1.6
Limits of 5V supply
All I-Bus modules are supplied with 24V and 5V. The available current for the 5V,
supplied from main CPU is limited:
'Main CPU'
Available current
B3Q700 / E3C011
250mA
Table '5V-Current consumption of I-Bus modules'
I-Bus module
Current consumption
from 'Main CPU'
I-Bus module
Current consumption
from 'Main CPU'
E3M080 55mA E3G060 10mA
E3M111 25mA E3G070 10mA
E3L020 10mA E3C011 12mA
E3L030 35mA E3I020* 100mA
E3G050 8mA E3I040 70mA
* Not an I-Bus module, but supplied via the 'Main CPU'
8.2
Control terminal limits (FC/FT)
8.2.1 Limitation
of
visible texts on a FC700A
The number of texts of other stations (i.e. AREAS) that can be displayed on one
control terminal is limited by 14'000 texts.
To evaluate how many control panels FC700A can be displayed to one FC700A,
the following calculation must be used:
Twice the number of visible sections (worst case 1000)
+ The number of visible ZONES (worst case 1000)
+ The number of visible ELEMENTS with element text (worst case 1000)
= Number of texts per FC/FT (worst case 4000)
Example (worst case)
14'000 : 4000 (e.g.) = 3 fully configured FC can be displayed to one FC
8.2.2 Limitation
of
visible texts on a FT700A
The number of texts of other stations (FC700A) that can be displayed on one con-
trol terminal is limited by 14'000 texts.
To evaluate how many control panels FC700A can be displayed to one FT700A,
the following calculation must be used:
Twice the number of visible sections (worst case 1000)
+ The number of visible ZONES (worst case 1000)
+ The number of visible ELEMENTS with element text (worst case 1000)
= Number of texts per FC/FT (worst case 4000)
Example (worst case)
30'000 : 4000 (e.g.) = 7 fully configured FC can be displayed to one FT