Rockwell-automation 22-COMM-B PowerFlex BACnet MS/TP Adapter Uživatelský manuál Strana 20

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2-4 Installing the Adapter
Setting the TERM, -BIAS, and +BIAS Switches
The adapter’s TERM, -BIAS, and +BIAS switches (Figure 2.2) are used
to turn on/off its built-in termination resistor and bias resistors.
Figure 2.2 Setting the TERM, -BIAS, and +BIAS Switches
Since nodes on a BACnet MS/TP network are typically a mix of
Allen-Bradley PowerFlex drives and other brands of building automation
products, the network node locations for the PowerFlex drives will
determine how their adapter’s TERM, -BIAS, and +BIAS switches
should be set.
104 0 0 0 1 0 1 1 116 0 0 1 0 1 1 1
105 1 0 0 1 0 1 1 117 1 0 1 0 1 1 1
106 0 1 0 1 0 1 1 118 0 1 1 0 1 1 1
107 1 1 0 1 0 1 1 119 1 1 1 0 1 1 1
108 0011011
120 0001111
109 1011011
121 1001111
110 0111011
122 0101111
111 1111011
123 1101111
112 0 0 0 0 1 1 1 124 0 0 1 1 1 1 1
113 1 0 0 0 1 1 1 125 1 0 1 1 1 1 1
114 0 1 0 0 1 1 1 126 0 1 1 1 1 1 1
115 1 1 0 0 1 1 1 127 1 1 1 1 1 1 1
Table 2.A MAC Address Switch Settings (UP = 1 = OPEN) (Continued)
MAC
Address
Switch Setting
MAC
Address
Switch Setting
SW1 SW2 SW3 SW4 SW5 SW6 SW7
SW1 SW2 SW3 SW4 SW5 SW6 SW7
Switches Description Default
SW1 Turns on/off the termination resistor Up (Off)
SW2 Turns on/off the -bias resistor Up (Off)
SW3 Turns on/off the +bias resistor Up (Off)
SW4 Reserved (not used)
UP = OFF
TERM Switch (SW1)
-BIAS Switch (SW2) +BIAS Switch (SW3)
RSRV Switch (SW4)
Reserved for future use
1
4
3
2
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