SETUP AND CONFIGURATION
Configuration of BACnet
®
humidistat devices
Table 16-1:
COM Parameters
Parameter
Description
Range
Default
CO 00
Bus plug-in hardware id (read only)
0…255
3
CO 01
Bus plug-in software version (read only)
0…255
12
CO 02
Bus plug-in software revision (read only)
0…255
13
CO 03
Communication address (must be unique in network)
1…127
1
CO 04
Baud rate:
0 = Auto-detect1
1 = 9600
2 = 19200
3 = 38400
4 = 57600
5 = 76800
6 = 115200
0…6
0 (Auto-detect)
CO 05
Highest master
1…127
127
CO 06
Device object ID1 000000xx
0…99
00
CO 07
Device object ID2 0000xx00
0…99
00
CO 08
Device object ID3 00xx0000
0…99
01
CO 09
Device object ID4 0x000000
0…4
0
CO 10
Send I-am at boot
1, 0 (ON, OFF)
1 (ON)
CO 11
Not used.
0…255
255
CO 12
Not used.
0…255
255
CO 13
Not used.
0…255
255
CO 14
Not used.
0…255
255
CO 15
Auto increment2 and auto-build3 of “device object name” flags:
0 = Auto increment and auto-build of device object name disabled
1 = Auto increment is enabled, auto-build of device object name disabled
2 = Auto increment disabled; auto-build of device object name enabled
3 = Auto increment and auto-build of device object name enabled
0…3
2
1 “Auto-detect baud rate”-mode
When this option is selected, the AEC-BAC will detect the baud rate of the RS485 network. The AEX-BAC will stay in baud rate detection mode until
it successfully decodes a package sent from device with address = 0 with a baud rate which is supported by the AEX-BAC. The baud rate detection
mode will be entered once at hardware start-up and after a prolonged communication failure.
2 “Auto increment”-function
When this function is enabled and an automatic AEC-PM1 parameter load is executed at power up of the controller, the following variables will be
incremented and written back to the AEC-PM1 unit:
- CO03 Communication address. This is incremented only if the value is not already 127 with respect to CO05 – the address of the highest master. If
CO05 is equal or less than the newly incremented value of CO03, then CO05 is written to be 127 (the maximum value of CO05 possible).
- CO06 … CO09 Device object ID. This is incremented only if the value is not already “4194304”.
3 “Auto-build of device object name”-function
The BACnet standard requires that the each BACnet endpoint has a unique name on the network (device object name). The initial name of the AEX-
BAC module is “AEX-BAC” equal for all devices. This means that device object names need to be edited manually.
Using the auto-build-function the device object name can be automatically assembled using the label AEX-BAC followed by the contents of CO06 –
CO09 (The device object ID). For example, AEX-BAC-01050001.
If one writes the device object name manually through BACnet, the auto-build function will automatically be disabled (CO15 set to 0 or 1). In this
case, the auto increment function will not have an effect on the device object name, only on the device object ID.
16
DRISTEEM TCI AND TRI2 HUMIDISTAT INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
