E16 Bit Order

Definition

Sets the bit order for each byte during Modbus RTU transmission. Options: Least Significant Bit (LSB) first or Most Significant Bit (MSB) first. Default: LSB first.

This parameter is used to set the transmission order of data bits within a single byte. LSB means bit 0 is transmitted first, while MSB means bit 7 is transmitted first. LSB is the most commonly used format. The packet diagram below uses N.8.1 as an example (each diamond represents one bit).

Modbus Converter between different formats

Notes

1. This parameter cannot be modified via RS485. For details, refer to the RS485 and Modbus RTU Settings section.

Operation Procedure

Button Functions (Click to Expand)

The main unit has four buttons. The bottom line (Line 3) of the LCD displays the current function of each button. Under normal operation, the button functions are as follows:

• Blue Button: Leftmost button: Return, exit, or save settings.

• Gray Direction Buttons:

  • Left Gray: Previous Page, decrease value, or select item

  • Right Gray: Next Page, increase value, or select item

• Orange Button: Rightmost button: Enter settings, edit, or confirm selection

Do not hold buttons for extended periods to avoid damage.

Button functions may change depending on the operation context to improve usability or prevent accidental presses

E16 Bit OrderSetting Steps
• From the main screen (green backlight), 
  press Orange Button (Setup) to enter settings (orange backlight).
• Use Gray Arrow Buttons to select E. Commute, press Orange Button (Enter).
• Use Gray Arrow Buttons to select E16 Bit Order, press Orange Button (Enter).
• Use Gray Arrow Buttons to choose the options. 
• Press Orange Button (Set) to confirm.
• Press Blue Button (ESC) to return to the main screen (green backlight).

E16 Options, RS485 Values, Read/Write Commands, and Formats

Option	Description	RS-485 Value
LSB first (Default)	Least Significant Bit (LSB) first	0
MSB first	Most Significant Bit (MSB) first	1