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Automation Components, Inc.

2305 Pleasant View Road  |  Middleton, WI 53562

Phone:

 1-888-967-5224  |  

Website:

 workaci.com

9003 Thru 
9006
9007 Thru 
9010
9011 Thru 
9016

Always reads a string value of "-123.45" (Null terminated).   For 
testing proper communication and interpretation of values.
Non-null terminated character string of the Serial Number.  For 
example, "12345678”
Non-null terminated character string of the Firmware Version.  For 
example, "02.00.000.90"

Test String Test Value

Serial Number

Firmware Version

9002 Thru 
9005
9006 Thru 
9009
9010 Thru 
9015

INPUT REGISTER (IR)

2001

2002

2003
2004
9001

9002

Temperature range Minimum value (Tenths). Signed Integer.

Temperature range Maximum value (Tenths). Signed Integer.

Relative Humidity range Minimum value (Tenths)
Relative Humidity range Maximum value (Tenths)
Always reads a value of 54321.  For testing proper communication 
and interpretation of values.

Always reads a value of -12345.  For testing proper communication 
and interpretation of values.

Temperature Range 
Min
Temperature Range 
Max
RH Range Min
RH Range Max
Unsigned Integer 
Test Value

Signed Integer Test 

2000

2001

2002
2003
9000

9001

HOLDING REGISTER (HR)

1

Value - Units:
62 - Degrees Celsius
63 - Degrees Kelvin
64 - Degrees Fahrenheit

Temperature Units

0

2

3

1001

1002

9001 Thru 
9016

9017 Thru 
9048

9049 Thru 
9080

Temperature Offset Value (Tenths) Signed Integer.
User can set an offset that will be added to Temperature sensor and 
reflected in IR3.  Range of -5.0 to 5.0 degrees Celsius/degrees Kelvin 
(-9.0 to 9.0 degrees Fahrenheit).  
For example, writing -16 would add an offset of -1.6 degrees.
Relative Humidity Offset (Tenths)
User can set an offset that will be added to RH sensor and reflected 
in IR4.  Range of -10.0 to 10.0 %RH.  
For example, writing -16 would add an offset of -1.6 %RH.
User can set what temperature value (Tenths) that would be 
returned when reading IR3 and Test Mode is Enabled in CL1001.  For 
Example -400 would be -40.0.
User can set what RH value (Tenths) that would be returned when 
reading IR4 and Test Mode is Enabled in CL1001.

Device Name, Device Location, and Device Description are user 
settable character strings (Null terminated) that can be used to allow 
for system customization and device identification. 

For example:

Device Name (Modbus 9001 thru 9016) could be set to a system ID: 
"S2253"

Device Location (Modbus 9017 thru 9048) could be set to:
  "Building 5, Floor 2, Duct 3"

Device Description (Modbus 9049 thru 9080) could be set to: 
  "Cold air return sensor"

Temperature Offset 
Value

RH Offset Value

Test Mode 
Temperature Value

Test Mode RH Value

Device Name

Device Location

Device Description

1

2

1000

1001

9000 Thru 
9015

9016 Thru 
9047

9048 Thru 
9079

Version: 2.0

I0000927

Summary of Contents for BACnet Series

Page 1: ...we recommend removing the block wiring and reattaching before mounting 16 to 22 AWG two conductor shielded cable is recommended for powering the sensors ACI recommends using Belden 3105 or compatible cable for RS 485 communication wiring This wire has 120 ohm input impendence The terminal blocks allow for 1 or 2 wires to be connected in each position for daisy chaining Daisy chain the RS 485 wirin...

Page 2: ...ings followthesetips The sensor should be mounted in the middle of the duct where air circulation is well mixed no stratification and not blocked by obstructions Stratification and obstructions can cause sensing errors An example is downstream from a heating or coolingcoil Duct probe should be placed 3 to 4 duct segments down from any bend or obstructions and away from 90 bends Mount the sensor on...

Page 3: ...es are allowed to send and receive tokens on the MSTP network ACI s Modbus RTU sensors are slave devices Only one master is connected to the bus and several slave nodes are connected to the same trunk The Master initiates communication The slave nodes only respond to a request from the Master Slave nodes do not communicate with each other Each branch must have all devices connected with connected ...

Page 4: ... INFORMATION One LED indicates four statuses Solid green shows that power is good but no data is transmitting A solid Amber indicates that auto baud is set and no data has been received to set a baud rate Green Amber flashing indicates data is being transmitted or received Solid Red LED status indicates an error state usually loss of communication on the network If BACnet is the selected protocol ...

Page 5: ...Sensor objects AI0 and AI1 a test mode can be set by writing the Boolean value true to the out of service property Then the present value can be set to any valid test value the user requires This allows a user to test reactions to specific values returned by this device DEVICE LOCATION The device location is optional but is intended to allow for further definition of the device s location The devi...

Page 6: ...e as in the Master device configuration ACI s Modbus RTU sensors utilize 8 data bits during communication exchange Parity and stop bit selection is performed via the SW4 switch located on the board Dipswtiches 1 and 2 are adjusted to select the parity and stop bits see TABLE 6 Where 0 is OFF and 1 is ON If BACnet protocol is selected these dipswitches are irrelevant TEST MODE Modbus RTU There are ...

Page 7: ...ature Units 0 2 3 1001 1002 9001 Thru 9016 9017 Thru 9048 9049 Thru 9080 Temperature Offset Value Tenths Signed Integer User can set an offset that will be added to Temperature sensor and reflected in IR3 Range of 5 0 to 5 0 degrees Celsius degrees Kelvin 9 0 to 9 0 degrees Fahrenheit For example writing 16 would add an offset of 1 6 degrees Relative Humidity Offset Tenths User can set an offset t...

Page 8: ...able 4 seconds BACnet MS TP or Modbus RTU Field Selectable EIA RS 485 0 to 127 0 Default Must be changed if Modbus RTU is selected protocol Field Selectable Auto Baud Default BACnet Only 9600 19200 38400 57600 76800 115200 Field Selectable 1035000 Address example Address 127 1035127 Field Configurable None Even Odd Field Selectable 1 or 2 Field Selectable 8 Screw Terminal Blocks 16 AWG 1 31 mm2 to...

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