6: Daisy-Chaining Multiple Base Radios To Single Rs-485/Power; Daisy-Chaining Power To Multiple Base Radios; Daisy-Chaining Rs-485 To Multiple Base Radios - Honeywell XYR 5000 Series User Manual

Honeywell Industrial Wireless
3.2.6: Daisy-Chaining Multiple
Base Radios to Single RS-485/
Power
3.2.6.1: Daisy-Chaining Power to Multi-
ple Base Radios
3.2.6.2: Daisy-Chaining RS-485 to Mul-
tiple Base Radios
NOTE
Each Base Radio on the same RS-485 line must be
set to a different RF Channel as this channel also
governs RS-485 communication protocols. Two
daisy-chained Base Radios set to the same RF
Channel will result in intermittent RS-485 com-
munication and poor RF communications with
Field Units. If you are unfamiliar with how to set
the Base Radio RF Channels see Section 5.1 of
this manual.
8 Rev. 3
11/04
Two or more Base Radios may be placed on a single RS-485 communica-
tion line, an a single power supply line (provided the power supply and
wiring can handle the load). This section will provide the information
needed to daisy-chain multiple Base Radios. However, be sure to complete
Section 3.2.8 on correct Base Radio termination if doing so.
A consideration when daisy-chaining power to multiple Base Radios is the
power draw at power supply. Each Base Radio will typically draw 200mA
@ 24VDC. This means a single Base Radio will draw typical average
power of 4.2W.
If using the supplied DIN rail mounted 15W power, it is suggested that no
more than three Base Radios be tied parallel to this supply.
To daisy-chain two or more Base Radios together, each Base Radio should
be wired in parallel to the next while making sure power is not supplied to
from two separate supplies to any single Base Radio. A typical wiring
setup is shown in Figure 3.8 below:
Figure 3.7: Daisy-Chaining Power to Multiple Base Radios
To daisy-chain two or more Base Radios together, each Base Radio should
be wired in parallel to the next. A typical wiring setup is shown in Figure
3.9 below. Make sure not to double wire any single Base Radio or confuse
the WIM RS-485 and MODBUS RS-485 wires.
Figure 3.8: Daisy-Chaining RS-485 to Multiple Base Radios
User Manual
Wireless Base Radio