BACnet MS/TP Option Board OPTCJ for 9000X Drives User Manual
3-2 For more information visit: www.EatonElectrical.com
MN04012006E
August 2006
Table 3-1: BACnet Option Board Parameters
Required MS/TP Parameters
Before the OPTCJ is connected to a network, there are three parameters that must be set in
order for it to operate correctly, these are the MACID (Medium Access Control Identifier),
Index Number, and the BAUD rate.
The MACID must be unique on the network to which it is connected. The same MAC address
may be used on a device on another subnet. MACIDs 128 – 254 are reserved for slave
devices. MACIDs 1 – 127 are valid for both masters and slaves. The portion of the address
space that is actually used for masters in a particular installation is determined by the value
of the Max_Master property of the Device object.
It is recommended that MAC address 0 be reserved for use by the MS/TP router and 255 is
reserved for broadcasts.
The Index Number is used by BACnet networks to uniquely identify BACnet nodes over the
entire network (including subnets). The number may be programmed manually from the
keypad to any in the range of 0 – 65535. The number zero is a special case that will instruct
the OPTCJ adapter to create a unique index number by reading information from the drive’s
power unit.
The baud rate for each device must also be set, and must match all the other devices on the
network for communication to work. The default BAUD rate is 9600.
Communication Status
To see the present status of the RS-485 fieldbus, enter the Comm.Status page from Monitor
menu (G6.5.2) (see Figure 3-2 and Table 3-2).
Figure 3-2: Communication Status
Table 3-2: BACnet Message Indications
No. Name Default Range Description
1 MAC ADDRESS 1 1 – 127
2 INDEX NUMBER 0 0-65535 Unique system identifier
3 BAUD RATE 1 1 – 9600 baud
2 – 19200 baud
3 – 38400 baud
Communication speed
Good Messages
0 – 999 Number of messages received without communication errors
Bad Frames
0 – 64 Number of messages received with CRC or parity errors
V1 V1
Comm. status
Good
Messages
Bad
Frames
G6.5.2.1.G6.5.2.
Monitor
0.841
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