IM 689-2
17
BACdrop Network Address
Unlike other MicroTech controllers, the BACdrop gateway has no hex switches. Instead, it uses a
software address that can be set with the BACdrop Setup Wizard. In most cases, the BACdrop
gateway will be the level-1 controller and thus its network address will be 00.00, which is the default
setting.
Table 4. Hexadecimal to Decimal Conversion Guide
Hex
Dec
Hex
Dec
Hex
Dec
Hex
Dec
00
0
10
16
20
32
30
48
01
1
11
17
21
33
31
49
02
2
12
18
22
34
32
50
03
3
13
19
23
35
33
51
04
4
14
20
24
36
34
52
05
5
15
21
25
37
35
53
06
6
16
22
26
38
36
54
07
7
17
23
27
39
37
55
08
8
18
24
28
40
38
56
09
9
19
25
29
41
39
57
0A
10
1A
26
2A
42
3A
58
0B
11
1B
27
2B
43
3B
59
0C
12
1C
28
2C
44
3C
60
0D
13
1D
29
2D
45
3D
61
0E
14
1E
30
2E
46
3E
62
0F
15
1F
31
2F
47
3F
63
Preparing an Address Schedule
It is important that an address schedule be prepared before the network is commissioned. The
schedule will be used to set the MicroTech controller addresses and to configure the BACdrop
gateway. (These tasks are discussed in the commissioning procedures below.) The address schedule
should associate the MicroTech network address, unit type, unit tag and/or location, IDENT, and
Device instance for each MicroTech controller. In addition, each schedule should list the MicroTech
Network Number and the version number of the BACdrop’s point mapping file (PMF).
An example of a possible address schedule is shown in Figure 8. Elements of the schedule are
discussed below. A blank address schedule, which may be photocopied, is included as the last page of
this manual.
Assigning MicroTech Addresses
Since a BACnet BAS does not use the MicroTech network address for communications, the McQuay
representative can assign MicroTech network addresses without consulting with the BAS
representative in advance.
The McQuay representative should keep in mind the following rules when assigning MicroTech
network addresses:
•
The level-1 controller (usually a BACdrop gateway) always has a network address of 00.00.
•
If a MicroTech supervisory controller is to be used (RMS, RMC, CSC, or LLLB), it must be the
level-1 controller, forcing the BACdrop gateway to level 2. In most cases, the network address of
a level-2 BACdrop should be 01.00. For a LLLB application, the BACdrop network address
should be 03.00.
•
The L2 addresses of level-2 MicroTech controllers must start at 01 and continue consecutively
(in hex) up to 3F (decimal 63). If there are more than 63 MicroTech controllers, one or more
additional BACdrop gateways are required.
•
There must be no gaps in the address sequences and no duplicate settings.
