7�4�- Bacnet Protocol - Circutor CVM-E3-MINI-ITF Instruction Manual

Modbus : Data bits
Modbus : Stop bits
BACnet: Device ID
BAcnet: MAC
BAcnet: Baud rate
7.3.7.16. Password configuration
These variables allow you to lock or unlock access to the programming menu, and also allow
you to change the password code. The password code may only be changed through this com-
mand.
The device does not need you to enter the old password in order for it to record the new one; it
records the new one directly without any verification.
Password
Configuration variable
Password value
Lock-Unlock
The password value is read and written in hexadecimal.
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7.4.- BACnet PROTOCOL
BACnet is a communications protocol for Building Automation and Control NETworks. This
protocol replaces the proprietary communications of each device, making it a set of common
communication rules that enables the complete integration of the building automation and
control devices of different manufacturers.
The device features BACNet MS/TP communications, following the specifications of ANSI/
ASHRAE 135 (ISO 16484-5).
Using a RS485 connection, the device can connect to a BACnet and include all of the objects
and services defined in the attached PICS map (Protocol Implementation Conformance
Statement). ("7.4.1. PICS MAP")
The default speed is 19200 bps and the MAC is 2 (node number), and can be changed on the
configuration screen or by entering the BaudRate and MAC_Address variables. The identifier
(Device_ID) can be changed on the configuration screen using the writing property over the
variable or through the Device_ID variable.
Another option is to overwrite the Object_Name in the Device object:
a) #Baud x – where x can be: 9600, 19200, 38400
b) #MAC x – where x can be: 0 ... 127
c) #ID x – where x can be: 0 ... 99999
For further information on the protocol: www.bacnet.org.
98
Table 55 (Continuation): Modbus memory map: Communications
Configuration variable
Table 56: Modbus memory map: Password configuration
Address
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Communications
Address
2746
2747
2EE0- 2EE1
2EE2
2744
Valid data margin
0 - 9999
2B70
0: Unlock
2B71
1: Lock
Valid data margin
0 : 8 bits
1: 7 bits
0 : 1 stop bit
1: 2 stop bits
0- 99999
0- 127
0: 9600 - 1:19200 - 2:38400
Default value
Instruction Manual
CVM-E3-MINI
Default
value
0
0
2
1
1
1234
0