Contemporary-control-systems BASrouter Portable Installation Guide (Firmware 2. Manuel d'utilisateur télécharger pdf (Page 15)

TD070210-0IG

MS/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

(Default Value = 2001)

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

(Default Value = 127)

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

(Default Value = 40)

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 those passed by the router from

BACnet/IP. The default value usually provides good performance.

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Contemporary-control-systems BASrouter Portable Installation Guide (Firmware 2. Manuel d'utilisateur Page 15