Galvanic Applied Sciences 962-AGX, Operation Manual

Page: 57 / 100

Revision 1 57 9/10/2019
Select the desired Modbus type and press OK. As an example, if the ENRON selection is
made, the presentation appears as shown in Figure 5-12,
Figure 5-12: MODBUS-ENRON Format
The bottom two lines of the page include a number of items that relate to communications
parameters. The user should indicate the desired Modbus address for the analyzer in the
Address field and indicate if Endian Swap and Register Swap are desired.
Endian Swap and Register Swap are used to manipulate how the data is transmitted and
they only apply to Modicon Modbus data. In Modicon Modbus, floating point numbers are
transmitted in 2 16 bit words. Endian Swap determines if the most significant bit is transmitted
first or if the least significant bit is transmitted first for each word. Register swap determines if
the portion of the number before the decimal place is transmitted in the first word or if the
portion of the number after the decimal place is transmitted in the first word.
The various items on the Available points listing on the left side of the tab can be accessed
by clicking on the + sign. The items in this listing can be used to populate the Modbus items
list on the right side of the tab by dragging and dropping them into the modbus list.