Contemporary Control Systems BASremote User Manual (firmware 3.1.x) - Manual (Page 72)

TD040300-0MF
72
7.6 Modbus Utility
This is an embedded utility that allows direct access to the Modbus registers within the
BAS Remote Master, BAS Remote Expansion modules and any attached Modbus
serial slave devices. It functions as a Modbus TCP client and it is an excellent utility to
verify that the BAS Remote is communicating with any attached slave devices. With a
web browser and an IP connection to the BAS Remote you can remotely examine and
alter various Modbus register values. Access the utility by clicking the Modbus Utility
button on the BAS Remote Master web page. Once the connection is made, the
following screen appears.
Figure 51
— Modbus Utility Screen
As shown above, this screen has 5 fields, 9 radio buttons and a pair of read/write buttons.
The five fields are:
Connect Status It initially reports "Connected to target" then awaits your first register
access. As this is a Java applet, it executes on your computer. When it
successfully connects to the BAS Remote, it will report “connected to target”.
NOTE: If you have uploaded a bas-cfg.csv file to the BAS Remote, you
will only be able to read/write the Modbus values of the devices listed in
the file. You will still be able to read/write all the Modbus registers/coils
of devices not listed in the CSV file.
Slave Address This is 1 by default. Enter the Modbus address of the device you wish
to access. To avoid erroneous results, it must be one of the following:

the BAS Remote Master

a BAS Remote Expansion module

a Modbus slave device attached to the Modbus Expansion port of
the BAS Remote Master