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Chapter 3 – Point Database
19
Siemens Industry, Inc. Owner's Manual 125-5093
Building Technologies 2015-10-14
Descriptor Address
1
Application Description
AO2 RANGE 90 6741, 6742 Scaling for the Analog Output (AO2) point. To get the correct
output, the slope and intercept of this point must match the
point database of the room controller.
AO2 DEADBAND 91 6740, 6741, 6742 When EXH FLOW and FLOW STPT are different by more
than the AO2 DEADBAND, the AO2 FLOW SIG changes
from setpoint to actual flow.
AO2 V MIN 92 6740, 6741, 6742 Minimum voltage value for fume hood output range (typically
0.0V or 1.0V).
CAL AIR 94 All YES commands the controller to go through calibration
sequence for the air velocity transducers. YES is also
displayed when the calibration sequence is started
automatically. CAL AIR automatically returns to NO after the
calibration sequence is completed. Valid input: YES or NO.
CAL SETUP 95 All The configuration setup code for the calibration sequence
options.
CAL TIMER 96 All Time interval, in hours, between the calibration sequence
initiations if a timed calibration option is selected in CAL
SETUP.
AVS1 PRESS 97 All The pressure that is applied to AVS1.
LOOP TIME 98 6741, 6742 The time, in tenths of a second, between control loop
calculations.
ERROR STATUS 99 All The status code that indicates any errors detected during
controller power-up.
DISPLAY WT 106 6740, 6741, 6742 Factor used to filter out large changes in the value of FACE
VEL that is displayed at the ODP. This value is a percent that
is used to average a portion of the current average face
velocity with a portion of the previous average face velocity.
The value of this point is a percentage of the current average
face velocity. (Application 6740 uses EXH VOL.)
DISPLAY RES 107 6740, 6741, 6742 A change of value (COV) limit for the face velocity displayed
at the ODP. The display does not update unless the change
in face velocity exceeds this value.
BLANK DISPLY 108 6740, 6741, 6742 When set to YES, the face velocity does not display at the
ODP.
LAMP TEST 109 6740, 6741, 6742 Turns on all lights, prompts, and the audible alarm at the
ODP.
ENG UNITS 110 6740, 6741, 6742 Toggles the display of the ODP from feet per minute to
meters per second. Toggling this point does not change the
displayed value at the portable operator's terminal.
TABLE VOLTS 118 6740, 6741, 6742 The database point used to view and edit the internal Venturi
calibration data.
TABLE FLOW 119 6740, 6741, 6742 The database point used to view and edit the internal Venturi
calibration data.
V TABLE PT 120 6740, 6741, 6742 The database point used to view and edit the internal Venturi
calibration data.
HI LIMIT 121 6740, 6741, 6742 Determines when the flow PID will “coast” if near setpoint.
LO LIMIT 122 6740, 6741, 6742 Determines when the flow PID will “coast” if near setpoint.
EMER DI6 123 6740, 6741, 6742 Remote initiation of the Emergency Purge functionality.
OPEN LOOP 124 6742 The controller does not use feedback to reposition the air