ICP DAS USA I-7530A-MR-FD User Manual page 107

Note: When using function code 0x10, this field will be the number of
word (high byte).
 Bit Count(Low):
This field indicates the low byte of number of bits which you want to
write. If the function code is 0x05 or 0x06, this field will be disabled.
Note: When using function code 0x10, this field will be the number of
word (low byte).
 Byte Count:
This field is always read-only. When using function code 0x0F or 0x10,
the value of the field will automatically be calculated by utility
 FD:
This field indicates whether to use FD format. If FD is checked, the
maximum value of Word Count is 64 bytes.
 Add:
Click this button to add a Modbus write command into "Write Command
List". The current configuration will be shown on the list. It includes CAN
specification, value of CAN ID, and Modbus RTU Write command.
After you add a Modbus write command, the command will occupy a
part of the "Write Memory Space". This memory size will be based on
the bit/word count of the "Modbus write command".
 Delete:
When you want to delete a Modbus write command, please click one of
the "Modbus Write Command" from "Write Command List" and then
click the delete button. At this time, the current Modbus write command
I-7530A-MR-FD Modbus RTU to CAN Converter User's Manual (Version 1.0, 08/2022) ------------- 107