SPYDER MODEL 7 VAV CONTROLLER INSTALLATION INSTRUCTIONS
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For example, if only DIP switches 1, 3, 5, and 7 are ON,
the MAC address would be 85 (1 + 4 + 16 + 64 = 85).
Fig. 31 Calculating the MAC Address
Configure the Device Instance
Number
The Device Instance number must be unique across the
entire BACnet network because it uniquely identifies the
BACnet devices. It may be used to distinguish the
BACnet device from other devices during installation.
The Spyder Model 7 BACnet MSTP device instance
number is automatically set when it is added to a WEBs-
N4 station. The user can change the device instance
number.
Connect to the BACnet MSTP Network
The controller communicates via its BACnet MSTP
interface with other BACnet MSTP-capable devices (for
example, other room controllers or MSTP controllers).
Consider the following factors before connecting.
• Maximum BACnet MSTP bus length. See Table 18
on page 24.
• Daisy chain topology.
• Must conform to TIA/EIA RS-485 cabling guide-
lines and ANSI/ASHRAE Standard 135-2010.
Use the Honeywell tested and recommended MSTP
cable - Honeywell Cable 3322 (18 AWG, 1-Pair,
Shielded, Plenum cable). Alternatively, Honeywell Cable
3251 (22 AWG, 1-Pair, Shielded, Plenum cable) is
available and meets the BACnet standard requirements.
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