Honeywell CIPer 50 - Controller Performance

CIPer
TM
MODEL 50 CONTROLLER – INSTALLATION AND COMMISSIONING INSTRUCTIONS
31-00233-02
66
Controller Performance
The controller performance has been tested in two test scenarios.
NOTE
These are example scenarios. It is therefore, of course, possible for you to use any other mix
of Panel Bus points and BACnet MS/TP points as long as the maximum number of hardware
I/O points (see section "Panel Bus Considerations" on pg. 46) is observed..
Table 26. Performance test 1 (simple statement for the COV updates, no HVAC application)
No. of
modules
No. of
hardware
I/O points
Points in
PX pages
Freq. of
value
changes
Histories
enabled
CPU usage
Test result
Panel Bus (via
RS485-1)
46
(A
491
491
(B
2 sec
(poll rate)
--
30%
(occasionally:
50%)
OK for non-
critical
applications
(C
BACnet MS/TP
(via RS485-2)
13
559
559
(D
2 sec
(COV)
500
(A
9x 821A, 9x 822A, 9x 823A, 9x 824, 5x 825, 5x 830A
(B
Four (4) PX pages: AI, AO, BI, and BO points each in a dedicated PX page per point type
(C
About 0.5% of the BACnet MS/TP point updates are occasionally delayed.
(D
One (1) PX page with all points
Table 27. Performance test 2
COV
frequency
Max. no. of COV updates per min. across
RS485-1 and RS485-2 together
CPU usage
Test result
BACnet MS/TP at
38,500 bps
4 sec
4,000
25…35%
(occasionally:
60%)
OK