Table of Contents
Advertisement
1-4
ENABLING MODBUS ON THE CONTROL UNIT
Modbus must first be enabled on the appropriate RS232 port of the ARIES NETLink control unit
to allow each BACnet Interface Module to communicate. It is necessary to do the following:
1. Identify the RS232 port on the ARIES NETLink MCB where the BACnet Interface Module is
connected (either "RS232A" or "RS232B").
Note: Typically, the topmost RS232 port ("RS232A") is connected to the topmost
2. Use either the keypad menus on the ARIES NETLink control unit or use the ARIES NETLink
Configuration Tool (ACT8000) to select and enable the port just identified.
If using the keypad menus of the control unit:
Select the SET MENU>2.Port Control>1. RS232A (or 2. RS232B)>4.MODBUS RTU
If using the ARIES NETLink ConfigurationTool (ACT8000):
Select the Global Tab in the Configuration Editor. In the Ports area of the screen, select
the item Modbus 1 (for topmost BACnet Interface Module). Select "RS232A for Modbus
RTU", "RS232B for Modbus RTU" or "Disabled". Repeat for Modbus 2 (Add-On BACnet In-
terface Module).
3. Use either the keypad menus on the ARIES NETLink control unit or use the ARIES NETLink
Configuration Tool (ACT8000) to set the port Modbus ID to "2".
Note:The RS232 port Modbus ID should always be set to "2" for all BACnet Interface
If using the keypad menus of the control unit:
After 4.MODBUS RTU is selected, a prompt will ask for Modbus ID. Enter a value of "2".
If using the ARIES NETLink ConfigurationTool (ACT8000):
Select the Global Tab in the Configuration Editor. In the Ports area of the screen, use the
up/down arrow keys to enter the Modbus ID value of "2".
For additional instructions, refer to the appropriate manual and section below:
•
ARIES NETLink Installation, Operation and Maintenance Manual,
P/N 06-237058-001— Chapter 3, Figure 3-19: SET Menu, Port Control.
•
ARIES NETLink Configuration Tool (ACT8000) User Guide,
P/N 06-237059-001— Chapter 2, The Global Tab, Table 2-21: GLOBAL Tab Options
1-5
COMMUNICATION SETTINGS
It is necessary to first select an RS232 port and then assign the Modbus ID to 2. The other
parameters below are set at the factory; they are provided below for reference only.
P/N 06-237214-002
BACnet Interface Module, if an Add-On BACnet Interface Module is included.
Modules included in your system.
Table 1-5. Default Communication Settings
Serial Port Setting
Modbus ID
MS/TP Baud Rate
Parity
Data Bits
Stop Bits
Modbus
2
38400
None
8
1
1-9
General Information
June 2012
Advertisement
Table of Contents
