33
Appendix C : Trend Outstation Memory Usage (TT-64x only)
1) The table below shows how much memory (in brIQs) each parameter requires :
Parameter Trend
Module
Size
(brIQs)
Comments
Return Air Temp
Sensor
76
Error Code
Sensor
76
On/Off Switch
10
Inhibit Switch
10
Setpoint Knob 13
Mode Knob
13
Fan Speed
Knob
13
Air Direction
Knob
13
2) A Trend IQ3 has a capacity of 10000 to 45000 brIQs depending on the model and an
IQ41x has a capacity of 10000 brIQs.
3) This table shows the number of brIQs needed for various system sizes and parameter
requirements:
Parameter Usage
brIQs per
FC
16 FC
system
32 FC
system
64 FC
system
All parameters
224
3584
7168
14336
Return Air
Error Code
152 2432 4864 9728
Return Air
Error code
On/Off
Setpoint
175 2800 5600 11200
Return Air
Error Code
On/Off
Inhibit
Setpoint
Mode
Fan Speed
211 3376 6752 13504
IQ3xcite
IQ3xact IQ3xcite IQ41x
I/O
Max
0 12 16 96 128
IQ3
brIQs
-
10,000 30,000 30,000 37,000 -
IQ3/XNC
brIQs 45,000 20,000 -
45,000 -
-
IQ41x
brIQs
10,000