Contemporary Control Systems BASRTP-B Manuale di installazione - Pagina 15
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Stampa la paginaMS/TP Parameters
MS/TP MAC
(Default Value = 00)
This is the 8-bit (0–127) MAC address of the router's MS/TP port,
in decimal. Lower MAC address numbers are preferred with the
default recommended. It is further recommended that all other
BACnet devices attached to the same MS/TP network be assigned
consecutive MAC addresses beginning with 1 without allowing any
gaps in addressing. Slave devices may have MAC addresses of 128–
254, but MAC address 255 is reserved.
MS/TP Network
This 16-bit decimal network number (1–65534) must be unique
for all BACnet networks within the BACnet internetwork. No
other networks, regardless of type, can have the same network
number. Do not use addresses 0 or 65535 since these addresses
are reserved.
Max Masters
Only master nodes participate in the MS/TP token-passing
process. The highest master MAC address (in decimal) in the
MS/TP network is 127 and you should use 127 if you are unsure
of other MS/TP device addresses. Each MS/TP device should
use this same value. For a value in this field to be proper, it must
equal or exceed the highest MAC address for any master on the
network. Optimum performance occurs when this value:
1. equals the highest MAC address of any master, and
2. all masters use sequential MAC addresses
Since many BACnet devices do not allow this parameter to be
changed, leave the BASRTP-B at the default value.
Max Info Frames
This is the maximum number of messages that can be routed
onto the MS/TP network by the router per token pass. Its range
is 1–100, and typical values are 20–40. Smaller values provide
less access to the MS/TP network from the BACnet/IP network
because they give native MS/TP messages higher priority than
(Default Value = 2001)
(Default Value = 127)
(Default Value = 40)
TD070210-0ID
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