Siemens FC700A manual Limitations of C-Busparticipants, 8.1Main CPU limits

Limitations of C-Bus participants

8 Limitations of C-Bus participants

This chapter describes the quantitative limits of the FC700A station.

The selection of the station type depends on the requirements. The following vari- ants are available:

		Flash ROM	SRAM
Station type	Modules	(2x1024Kx8Bit)		EPROM set	RAM set
			Soldered
		'Program file'
FC700A	B3Q700	CIY00760	4x512Kx8Bit	–	–
FT700A	B3Q700	CTY00760	4x512Kx8Bit	–	–
				CKQ007.60	2 x Z3S070
FG700A	E3H020	–	–		(2x512Kx8Bit)
				(2x512Kx8Bit)
					(Assembly ex works)

8.1Main CPU limits

8.1.1Maximum number of devices

1000 devices (with AMPK=1) per FC700A.

8.1.2Limits in the logical structure

The limits in the logical structure are given by the node-type, by the highest possi- ble CSX number and the maximum amount of display-digits. These limits are given by the system and are independent of the memory capacity.

Table 'Limits of the logical structure'

Maximum rating	Maximum rating	Maximum rating	Maximum rating
AREAS per STATION	SECTIONS per AREA	ZONES per SECTION	ELEMENTS per ZONE
... 4	…255	…255	…99
			International 5: …255

8.1.3Maximum number of criteria in zones control 4 and 6

The maximum number of control zones with 16 criteria is limited by 200.

To optimize the performance of your system minimize the number of CPU-overlapping controls as much as possible.

A maximum of 40 CPU-overlapping controls (zone control 6) are admissible per C-Bus.

8.1.4Maximum number of ZONE time channel

Max. 16 ZONES time channel are permitted per station.

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Siemens Building Technologies	007836_a_en_--.doc
Fire & Security Products	03.2004