ICP DAS USA I-7530A-MR-G User Manual page 95

 Bit Count(Low):
This field indicates low byte of the number of bits which you want to
read.
Note: When using function code 0x03 or 0x04, this field will be the
number of words (low byte).
 Add:
After setting the "Modbus Read Command, please click this button to
add it into command list. Then, you can decide to add other command
or save configuration into module. After you add a Modbus read
command, the command will occupy a part of the "Read Memory
Space". This memory usage size will be based on the bit/word count
setting of the "Modbus Read Command".
 Delete:
When you want to delete a "Modbus Read Command", please click one
of the "Modbus Read Command" from command list. Then the "Delete"
button will be enabled. At this time, you can click "Delete" button to
delete current "Modbus Read Command". Afterward, the memory
usage of "Read Memory Space" will be recalculated.
 Clear:
Click this button will clear all "Modbus Read Commands" in command list.
Afterward, the usage of "Read Memory Space" will become to zero.
Note: After pressing the "Save Configuration" button to save configuration,
the related parameters will be stored into the I-7530A-MR module. When I-
7530A-MR is rebooted on operating mode, it will load these parameters and
access the Modbus slave devices automatically and continuously.
I-7530A-MR Modbus RTU to CAN Converter User's Manual (Version 1.08, 07/2019) ------------- 95