Contemporary Controls BASstat BAST-321HP-B2 User manual

BAST-321HP-B2
BACnet Communicating Thermostat for 2-stage Heat Pump Operation
BASstat
Heat Pump Thermostat
User Manual
# UM-15094000-AA0

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Trademarks
BASautomation, Contemporary Controls, and CTRLink are registered trademarks of
Contemporary Control Systems, Inc. BACnet is a registered trademark of the American
Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. Powered by
Sedona Framework is a trademark of Tridium, Inc. Other product names may be
trademarks or registered trademarks of their respective companies.
Copyright
© Copyright 2021, by Contemporary Control Systems, Inc. All rights reserved. No part of
this publication may be reproduced, transmitted, transcribed, stored in a retrieval system,
or translated into any language or computer language, in any form or by any means,
electronic, mechanical, magnetic, optical, chemical, manual, or otherwise, without the
prior written permission of:
Contemporary Control Systems, Inc.
Tel:
[phone]
2431 Curtiss Street
Fax:
[phone]
Downers Grove, Illinois 60515 USA
E-mail:
[email protected]
Disclaimer
Contemporary Control Systems, Inc. reserves the right to make changes in the
specifications of the product described within this manual at any time without notice and
without obligation of Contemporary Control Systems, Inc. to notify any person of such
revision or change.

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Contents
1Introduction................................................................................................................ 3
1.1 Features and Benefits.......................................................................................... 4
1.2 Product Image and Main Features ...................................................................... 5
BASstat 321C-B2 ...................................................................................................... 5
2Specifications ............................................................................................................ 6
2.1 Inputs ................................................................................................................ 6
2.2 Outputs ................................................................................................................ 6
2.3 Communication.................................................................................................... 6
2.4 Electrical .............................................................................................................. 6
2.5 Environmental...................................................................................................... 7
2.6 Electromagnetic Compatibility.............................................................................. 7
2.7 Mechanical (all dimensions are in mm)................................................................ 8
3Installation ................................................................................................................. 9
3.1 Terminal Block Pin Assignments ......................................................................... 9
3.2 Limited Power Source.......................................................................................... 9
3.3 Power Supply Precautions................................................................................. 10
3.4 Wiring Diagram .................................................................................................. 10
4Operation................................................................................................................. 11
4.1 User Mode ......................................................................................................... 11
4.2 Control Type ...................................................................................................... 13
4.3 Engineering Mode Menu.................................................................................... 17
4.4BACnet Objects and Network Configuration ...................................................... 23
5Warranty .................................................................................................................. 31
6Returning Products for Repair ................................................................................. 31
7Declaration of Conformity ........................................................................................ 32

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1 Introduction
The BAST-321HP-B2 is a member of the BASstat BACnet Communicating Thermostat
series. It provides multi-staged heating and cooling control in an attractive wall-mounted
enclosure with a large LCD display. Intended for use with single and multiple stage heat
pump units, the thermostat can control 2 reversible DX heat pump compressors, one
binary reversing valve, one binary supply fan relay, plus one binary stage of auxiliary
heating (gas or electric). This BASstat is BTL listed to ensure seamless integration into a
BACnet network, using BACnet/MSTP over 2-wire EIA-485, and can be routed to
BACnet/IP clients using a Contemporary Controls BASrouter (BASRT-B). A large, easy to
read LCD display indicates setpoint, space temperature and current mode of operation
using graphical icons.
The BASstat has a built-in space temperature sensor with provision for remote wired 3kΩ
NTC thermistor sensor or temperature value can be sent by another communicating
device over the BACnet network. The BASstat is configurable locally using the
Engineering Menu or via a network connection to a BACnet client. Contemporary Controls’
free BACnet Discovery Tool can be used for initial discovery and configuration of the
thermostat over the network. Control algorithm parameters such as deadband,
proportional gain, integral rate and trip points are all configurable. This BASstat also
features configurable fan control and occupancy selection. Operating states are indicated
on the thermostat display.
The numerous features available in the BASstat can be configured by the systems
integrator to meet user requirements in two different ways. One way is using a button
sequence on the thermostat in order to enter the Engineering Menu - which requires
physical access to the thermostat. Optionally, the buttons could be locked to limit user
access to Engineering Menu after installation is complete. The second method is
configuring the thermostat over the BACnet network using a BACnet client device or
software such as Contemporary Controls’ free BACnet Discovery Tool (BDT).

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1.1 Features and Benefits
• Stand-alone thermostat algorithm or fully BACnet network-controllable
• BTL listed with B-ASC device profile for integration into BACnet networks
• 24VAC (+/-10%) power input
• BACnet communication -BACnet MS/TP with baud rate selections up to 76.8kbps
• Suitable for single or dual compressor heat pump control applications with manual or
automatic changeover
• Adjustable algorithm applied to multiple stage control (2 cooling stages- 3 heating stages)
• Effective run time accumulation for energy consumption metering
• Configurable control parameters such as deadband, proportional gain, integral rate and
cycle time
• Adjustable minimum/maximum set point ranges
• Three options for temperature sensing:
oBuilt-in temperature sensor, or
oRemote sensor (RS) input for wiring in a remote temperature sensor (NTC
3kΩ), or
oBACnet network temperature input
• Occupancy status can be switched (1) locally by the user, (2) by using a separate
occupancy sensor, or (3) by using BACnet network command.
• Separate adjustable occupied and unoccupied set points for heating and cooling mode
• Fan can be set to run continuously or automatically
• Non-volatile memory retains user settings during power outage
• Thermostat buttons are lockable to prevent tampering
• °C or °F display
• Energy Savings Input for local occupancy control
• Control outputs disabled during “OFF” state for safety

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1.2 Product Image and Main Features
BASstat 321C-B2

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2 Specifications
2.1 Inputs
Item
Description
Temperature Display Range
14 to 140°F (-10 to 60°C)
Temperature Display Resolution
0.1°F (0.1°C)
Temperature Accuracy
±1.8°F (±1.0°C) with all outputs off
Energy Savings Input
Provision for external occupancy sensor
Setpoint Range
32-122°F (0-60°C) in 0.5° (°F or °C) increments
Remote Temperature Sensor
Provision for NTC Type 3kΩ thermistor
2.2 Outputs
Item
Description
Relay Output
Fan, Compressor 1, Compressor 2, O/B Reversing Valve,
Auxiliary Heat (stage 3)
Contact Rating
SPST 2A at 30 VAC with inductive load
Minimum contact life
100,000 cycles
2.3 Communication
Item
Description
Protocol Compliance
BACnet MS/TP or BACnet/IP with B-ASC, BTL Listed
Physical Layer
EIA-485 2-wire
Baud Rate
9.6, 19.2, 38.4, 76.8 kbps (default 38.4 kbps), N81 format
Cabling
Shielded single-pair twisted 24 ga AWG
2.4 Electrical
Item
Description
Supply Voltage and Current
24 VAC (±10%) 5 VA
Power Source Class
NFPA 70 (NEC) Article 725 Part III Class 2
Internal Power Supply
Half-wave rectified and filtered DC

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2.5 Environmental
Item
Description
Operating Temperature
32°F to 122°F (0 to 50°C)
Storage Temperature
14°F to +140°F (-10°C to 60°C)
Relative Humidity
5 to 95% non-condensing
2.6 Electromagnetic Compatibility
The BAST-321HP-B2 complies with the following specifications and bears the CE mark in
accordance with the provisions of the Electromagnetic Compatibility (EMC) Directive
2004/108/EC based on the following specifications:
Standard
Test Method
Description
EN 61000-6-2
IEC 61000-4-2
Electrostatic Discharge Immunity
EN 61000-6-2
IEC 61000-4-3
Radiated, Radio-Frequency, Electromagnetic
Field Immunity
EN 61000-6-2
IEC 61000-4-4
Electrical Fast Transit/Burst Immunity
EN 61000-6-2
IEC 61000-4-5
Voltage Surge Immunity
EN 61000-6-2
IEC 61000-4-6
Immunity to Conducted Disturbances
EN 61000-6-2
IEC 61000-4-8
Power Frequency Magnetic Field Immunity
EN 61000-6-2
IEC 61000-4-11
Voltage Dips and Interruptions
EN 61000-6-3
IEC 61000-3-2
Limits for Harmonic Current Emissions
EN 61000-6-3
IEC 61000-3-3
Limitation of Voltage Fluctuations and Flicker
in Low Voltage Supply Systems

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2.7 Mechanical (all dimensions are in mm)
Mounts directly onto wall, panel, standard 65×65mm junction box (hole pitch 60 mm) or
standard 2×4-inch vertical junction box (hole pitch 83.5mm).
Width: 94mm
Height: 118mm
Depth: 34mm

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3 Installation
The BAST-321HP-B2 is intended for surface-mount installation on an interior wall, away
from direct sunlight or direct air movement. The display (top half) can be removed from its
base by loosening the small Philips screw at the bottom of the display. Once the display is
removed from the base, the base can be mounted onto the wall with appropriate fasteners.
If a single-gang electrical junction box is to be used, the top and bottom mounting holes will
align with the screw holes in the junction box.
3.1 Terminal Block Pin Assignments
Two terminal blocks are provided for all field connections. The remote sensor input (RS2)
is at terminals 14 and 18. The Local Occupancy (ESI) input is wired to terminals 14 and
15- with a default setting of : Open= Occupied, Closed= Unoccupied. The Outside Air
Temperature (OAT) is wired to terminals 13 and 14. RS-485 is wired to terminals 16 and
17.
Number
Mark
Comment
Number
Mark
Comment
1
R
24 VAC high-side
10
2
C
24 VAC common
11
3
O/B
Reversing Valve
12
4
13
RS
Remote Temperature
5
Y1
Compressor 1
14
GND
Ground
6
Y2
Compressor2
15
ESI
Energy Saving Input
7
W
3rd Stage Auxiliary Heat
16
C+
RS-485 Positive
8
G
Fan
17
C-
RS-485 Negative
9
18
3.2 Limited Power Source
The BASstat is intended to be powered by a Class 2 compliant power source and only
accepts 24VAC with no more than 5VA of power consumption. It should be powered by a
Class 2 power source complying with the requirements of the National Electric Code (NEC)
article 725. The transformer or power supply complying with the Class 2 rating must carry
a corresponding listing from a regulatory agency such as Underwriters Laboratories (UL).

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3.3 Power Supply Precautions
Internally, the BASstat utilizes a half-wave rectifier and can share the same AC power
source with other half-wave rectified devices. Sharing AC power with full-wave rectified
devices is NOT recommended. AC power sources that power several half-wave devices
have a common secondary connection called COMMON, LO, or GROUND. Connect the
HOT side of the secondary to the 24 VAC high side input on the BASstat and the LO side
to 24 VAC common.
WARNING: Devices powered from a common AC source could be damaged if a mix of
half- wave and full-wave rectified devices are both present. If you are not sure of the type
of rectifier used by another device, do not share the AC source with it.
3.4 Wiring Diagram

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4 Operation
4.1 User Mode
User-side control is accomplished with six buttons – MODE (Heat, Cool, or Ventilate),
FAN (Auto or On), UP, DOWN, SET, and POWER. There are options to lock the panel
buttons to limit user access if so required. A large LCD display indicates setpoint, space
temperature, occupancy status, and current mode of operation using graphical icons.
System modes (Cool, Heat, Ventilate) available to the user are dependent on control type
chosen from Engineering Menu (tyPE) or BACnet object [MSV8] Control Type. See
section 4.2 Control Type of this manual).
System modes and button operation may be limited by installation engineer, especially if
the thermostat is completely controlled over BACnet network.
The first tier of operation includes the following settings as shown below. To operate the
thermostat:
1. The POWER button toggles between ON or OFF states to start / stop the thermostat
outputs. (ON/OFF control can be accomplished over BACnet as well).
2. At power ON, press any button to start the User Mode operation. Press the MODE button
to toggle between different HVAC operating modes such as Cool, Heat, or
Ventilate@Cool and Ventilate@Heat.
Press the UP/ DOWN buttons to adjust temperature setpoint or
rotate the values of a menu setting. Press the FAN button to toggle fan
modes of AUTO or CONTINUOUS On. If no AUTO icon is displayed, the fan will run
continuously until commanded off using button on thermostat or BACnet command. If
AUTO icon is flashing, the fan is operating under delay timer and will shut off
automatically when the end of cycle delay timer expires.
Press the SET button and use UP/ DOWN buttons to
toggle the unit between Occupied or Unoccupied states when outside of scheduled
operation. Use SET or MODE to apply (SET button can be locked in applications
forbidding occupancy state user control).
3. Thermostat will return to normal display with the last known setting if no button is pressed for
10 seconds.

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User Mode Thermostat Operation
#
Item
Description
Remarks
1
Normal Display
Display current room or set-point
temperature.
Use the (SP) parameter in
the Engineering Menu or
[MSV7] Display to choose
Current room or Set- point
temperature on display.
2
Temperature
Setpoint Setting
using Up/Down
Arrows
Set the desired temperature.
The [AV0] / [AV3] Cool / Heat
Occupied and [AV8] / [AV9]
Unoccupied Cool / Heat
temperature setpoints
BACnet objects can be used
to write or force the setpoint
to a desired value from
BACnet supervisor.
3
Mode Select
Select the working mode: Cooling
(), Heating (), or
Ventilating ( ).-p[
After pressing the MODE
button, press the UP/ DOWN
button to rotate the
selections. Dependent on
Control Type.
4
Fan Auto/
Continuous
Change the Fan mode between
Auto or Continuous On.
When AUTO is displayed,
the fan is handled
automatically. When AUTO is
flashing, the fan is working
under a delay timer. When
FAN icon is spinning but
AUTO is not displayed, the
fan will run continuously until
commanded off.
5
Occupancy Setting
Press SET, Used UP and DOWN
arrows to toggle between the
Occupied and Unoccupied
setting. Use MODE or SET
buttons to apply.
The SET button could be
locked for applications
forbidding user occupancy
state control.

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User Mode Flow Chart
4.2 Control Type
Control Type, System Mode and Algorithm Configuration
System modes available to the user are dependent on control type.
Multi-stage Cooling or Heating with Auto Changeover – This the default control type in
this thermostat. Mostly used for standalone operation. The thermostat will switch
between Cool and Heat modes automatically. In this control type, the user will be
presented with a choice of Heat or Ventilation@Heat when the thermostat is in Heat
mode (automatic), and Cool or Ventilation@Cool when the thermostat is in Cool mode
(automatic).
Multi-stage Cooling or Heating with Manual Changeover – In this control type the
thermostat will wait for a command from user or BACnet supervisor to switch between
Cool and Heat modes. The user will be presented with a choice of Heat or
Ventilation@Heat when the thermostat is in Heat mode, and Cool or Ventilation@Cool
when the thermostat is in Cool mode. The user can choose to switch between Cool and
Heat modes using the MODE button.

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BACnet controlled – In this control scheme, the built-in thermostat algorithm can be
bypassed, and the thermostat can be controlled over the BACnet network with
commands from the supervisor device. The logic executing in the supervisor (such as
Niagara or Sedona logic) can control the thermostat over the BACnet network. To put
the thermostat in BACnet network control mode, use the Lock [AV18] object bit 9:
Control DOs by thermostat algorithm “0” (default) or BACnet supervisor “1” (add
decimal=512).
Cool Only (nullified/disabled in firmware), and Heat Only (nullified/disabled in firmware)
control types are listed in the BACnet object and Engineering Menu object but are not
available for use.
Control type is only configurable by the installer using Engineering Mode Menu or
BACnet supervisor. The installer must decide the control type suitable for the
application, set it to a static value, or program the BACnet supervisor to change the
control type automatically. The default control type is set to Cooling or heating with
Auto Changeover. This is the most common control type. Manual Changeover can be
used to limit frequent automatic change of system modes (Cool or Heat).
Algorithm
•A PID adaptive control algorithm is applied to minimize overshoot, in addition to
proportional band (Stage Width) and derivative (Differential) calculation.
•When the thermostat is active (either the heating or cooling stage is on), a
“Working ( )” icon will be shown on the LCD. Stage 1 will show icon ( ).
Stage 2 will show icon ( ) 3rd stage heat will show icon ( ).
System Mode
•The default control type is multi-staged cooling and heating with automatic
changeover, allowing the thermostat to operate as stand-alone. Manual
Changeover allows restriction of mode selection to Cool only or Heat only where
necessary. Control Type can be selected in (tyPe) or [MSV8].
•For manual changeover control, cooling or heating system modes can be selected
by pressing the MODE button or using a BACnet command to object[MSV1]. In
application where user control needs to be limited, the lock button function can be
used to disable MODE button.
•Occupied Cooling [AV0] and Heating [AV3] set points and Unoccupied Cooling
[AV8] and Heating [AV9] setpoints can be set individually. Minimum deadband
[AV7] can be programmed as well.
Short On/Off (Minimum On/Off time) and Maximum cycles per Hour
•There are short on/off (minimum off time and minimum on time of stage
engagement) and maximum cycles per hour protection for cooling and heating
mode (E29, E31, E54, E55; AV24, AV26, AV46, AV47).
•Short on/off time (in seconds) will check minimum on time and minimum off time of
each stage before changing its state.

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•Maximum cycles per hour will check cycle times in a particular hour. When the
cycle times reach the setting maximum cycles in that hour, it won’t allow more
cycles until next hour.
•When the stage state change is pending by Short Cycle Delay or Maximum
Cycles, the Clock icon ( ) will appear on the LCD.
Next Stage Engagement Short Cycle Delay
There needs to be an automatic delay (Short Cycle, default 5 minutes, E28/ AV23 for
cooling control, E30/AV25 for heating control) before starting the second stage to
prevent possible damage to the DX equipment.
Reversing Valve Polarity
Reversing Valve N.O./N.C. for cooling and heating mode changeover is defined by
E53/BV3. The default setting at pin 3 (O/B) is open for cooling and closed for heating.

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Floating Deadband
The Heat and Cool temperature setpoints could be “attached” together. This means
that as one setpoint is adjusted and “hits” against the deadband region, it will “push” the
deadband region and the other setpoint along the temperature setpoint axis to allow for
adjustment while maintaining the configured deadband. If the setpoint is adjusted back
the other way, it will “pull” the deadband region and the other setpoint along the
temperature setpoint axis.
Minimum Cooling Setpoint and Maximum Heating Setpoint
•Minimum Cooling Setpoint will be confined by set point low limit plus dead band
and Minimum cooling setpoint [E46/AV-39] default: 18℃/ 65℉
•Maximum Heating Setpoint will be confined by set point high limit minus dead
band and Maximum heating setpoint [AV-40] default: 25℃/ 77℉
Assigned Current Temperature
A current temperature value can be assigned thru BACnet AV-1 to take place of the
onboard temperature sensor value. The assigned value is valid if BACnet
communication is driving a flip-flop signal to (BV-16: heartbeat signal) within the (AV-
29: Heartbeat Rate time) period (in seconds). Otherwise, the assigned temperature will
revert back to the onboard sensor reading.
Fan Control Output
•Lowest Fan Speed is the speed the fan will default to after a control action
(Heating or Cooling) with fan in AUTO mode. If the lowest fan speed [MSV4] is set
as “Stop (1)”, the fan will automatically shut off after the control action plus a 2-
minute fan-off time delay. During this delay, the AUTO icon will flash. If lowest fan
speed is set to “Low (2)” the fan will run continuously after a control action
•Fan Mode can be toggled between AUTO or ON by using the FAN button on the
thermostat or BACnet object [MSV0] Fan Mode (BACnet supervisor). By default,
this value is set to “Auto(1)”, the AUTO icon is displayed, and fan operation will be
controlled automatically. To put the fan in ON mode set [MSV0] to “Low(2)”. This
will cause the fan to run continuously (no AUTO icon is displayed). Fan icon spins
when fan is active. The FAN button can be locked to limit user access to this
feature or the BACnet supervisor can be programmed to default the thermostat to
certain state at the end of an occupancy cycle.
•During heating operations, the supply fan is controlled by the BASstat. This is
enabled by default. (BV15 =1)

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Occupancy Setting
There are several ways to define thermostat occupancy state. Note: Occupancy will be
detected by ESI contact by default.
•Energy Savings Input (ESI) This is a dry contact input meant for communication
from a customer supplied occupancy sensor. (default)
•Occupancy status (occupied/unoccupied) can be set by a BACnet supervisor using
writable object ESI Contact Definition [BV14]. “0” for occupied, and “1” for
unoccupied. E12/AV18 must be set with a value of 64 (disabled) in advance
(E12/AV18 is set as 0 by default)
•User control of occupancy state is allowed from the SET button if E12/ AV18 Lock
has the ESI Contact disabled. Pressing the SET button and UP/DOWN buttons will
toggle the occupancy state. Press SET button to confirm. The SET button can
work in conjunction with BACnet occupancy Command [BV14] on last-write-wins
basis. The SET button could be locked to limit user control (use Lock [AV18]
BACnet object or (LOC) engineering menu item to lock SET button). In this case
only the BACnet supervisor can set occupancy states.
•Occupancy Status [BI0] is a read-only BACnet object indicating current occupancy
state - “0” for occupied, and “1” for unoccupied. (AV18 is set as 0 by default).
•When in unoccupied state, a Moon ( ) icon will be displayed on the LCD and
the thermostat will change the set-point temperatures to the Unoccupied Cool and
Unoccupied Heat setpoints [AV8 – 9]. When the state changes back to occupied,
the thermostat will return to the occupied set-point values for Cooling and Heating
Temperature Setpoint [AV0, AV3] and sunlight icon ( ) will be displayed to
indicate occupied state on LCD.
4.3 Engineering Mode Menu
Thermostat configuration can be performed using the engineering menu or by
controlling BACnet objects using a BACnet client tool such as Contemporary Controls
free BACnet Discovery Tool (BDT). It is highly suggested that engineering mode be
operated by trained installers only because it is related to system parameters that will
affect the control results.
Operation of Engineering Menu
•At power “ON”, press and hold both the UP and DOWN buttons simultaneously
for 5 seconds to enter the Engineering Mode menu.
•Press the UP or DOWN buttons to rotate through the menu items. The last item
loops back to first item at the end of items in menu. Press the MODE button
to enter a submenu item.
•Press the UP or DOWN button to change the setting in the submenu item.
Press the MODE button to confirm the setting and return to menu item

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selection. If no button is pressed for 10 seconds, the display will return to the
menu item selection. After another 10 seconds, the display will return back to
User mode. Settings are not changed unless confirmed using the MODE
button.
•To leave Engineering Mode, rotate till (End) menu item appears and press the
MODE button. Alternately, pressing no buttons for 10 seconds will return the
thermostat back to User mode.
Engineering Menu Flow Chart

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Engineering Menu Items Table
Item Mnemonic Description
°C Scale
°F Scale
Step
Default
Range
Default
Range
E1
db
Deadband
2.0
0~10
4.0
0~18
0.5 (°C/°F)
E2
ESIC
Unoccupied(ESI) cooling set point
28
25~35
82.5
77~95
1.0 (°C/°F)
E3
ESIH
Unoccupied(ESI) heating set point
15
10.0~22.
0
59
50.0~72.
0
1.0 (°C/°F)
E4
I-t
Integral Time and Output Cycle Time
(seconds)
60
0~500
60
0-500
10 (Sec.)
E5
OPL1
Not used
E6
SPA1
Not used
E7
SP-L
Low limit for temperature set point
10
0~50
50
32~122
1.0 (°C/°F)
E8
SP-H
High limit for temperature set point
30
0~50
95
32~122
1.0 (°C/°F)
E9
OFSt
Current temperature offset
0.0
-
10 0~10
0.0
-
18 0~18
0.1 (°C/°F)
E10
Pb
Proportional band or stage width
1.5
0~10.0
3.0
0~18.0
0.1 (°C/°F)
E11
diFF
Stage differential
0.5
0.1~1.0
1.0
0.1~1.8
0.1 (°C/°F)
12
LOC
Bit Definition:
0: MODE button (dec=1) 1: Down buttons
(dec=2) 2: Up button (dec=4)
3: FAN SPEED button (dec=8) 4: Power
On/Off button (dec=16) 5: SET (or ℃/℉)
button (dec=32)
6: ESI contact detection (dec=64) 7:
Door/Window contact detection (dec=128)
8: Modification for communication
parameters (dec=256)
i.e. baud rate, MAC addr, device inst.
9: Control DOs by thermostat algorithm
(0) or BACnet sup. (1) (dec=512)
10~15: reserved/unused
Bit Value
0: Unlock / enable 1: Lock / disable
Examples (add dec values to lock
multiples)
Unlock/enable all (0) Lock MODE Button
(1) Lock Down Button (2)
Lock MODE & Down Buttons (3 = 1+2)
Lock Power On/Off button (4)
Lock MODE & Power & Down (7 = 1+2+4)
Lock SET button (32)
Lock MODE & Down & Power & SET (39
=
1+2+4+32)
ESI contact disable (64)
Lock the modification for communication
parameters (256)
DOs control commanded by BACnet (512)
64 0-1023 64 0-1023
1