Modbus Integrator's Guide for the CXC HP | 2 - Using Modbus
Figure 1. Enabling Modbus
Table 1. Configuration
Name Description
Modbus Agent Enables or disables Modbus service. When enabled, the service is initialized and
the controller is ready to accept requests.
The default configuration is Disabled.
Byte Order Changes the byte order of 32-bit data. This setting is used to change whether the
most or least significant byte comes first. This setting should be set according
to the requirements of the Modbus client. The client will decode and format data
needed to understand the correct byte order. The default configuration is Least
significant bytes first.
Limited Data Set ID This ID is a small set of DC system data. See the Modbus reference section for
the data mapping. The default is 247, the range is 241 to 250.
System Device IDs This table has a device ID for each supported system. Device IDs are automatical-
ly assigned when systems are created. The devices IDs must be unique. See the
Modbus reference section for the data mapping. The range is 1 to 240.
Client Application Setup
Client applications connect to the controller through TCP/IP via a Modbus client. The standard Modbus
service port 502 is used. The sample application used for the following figure, is Modscan32 available via:
WinTech Software Design - www.win-tech.com.
0350114-J0 Rev G Page 9
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