Revision History - Ebyte E831-RTU User Manual

Wireless data transceiver

Hide thumbs Also See for E831-RTU:

User manual (44 pages)

User manual (37 pages)

User manual (21 pages)

Table Of Contents

Table of Contents

The values of DI1, DI2, DI3, and DI4 in the table represent that the status of DI1, DI2 is updated

to open, the status of DI3 is updated to closed, and the status of DI4 has not changed. The last two

bytes are calculation value of modbus CRC16.

Note: When set to rising edge counting mode, trigger once, the value of DI is 00, when set to

falling edge counting mode, trigger once, the value of DI is 01. Also 0xff means no change.

Frame

header

0xAA 0xBB

4.3.3. Digital output DO time setting

The setting of digital pulse output time is to set the digital output time, the corresponding Modbus

default digital output is closed to hold status, that is, the digital value remains on after the output is

closed. If it is set to 100ms and above, such as 500ms, after the digital output close command is sent,

the switch value close will be maintained for 500ms, and then automatically open 500ms later.

4.3.4. Switch value DO restart output status setting

Whether the device is powered off and restarted to maintain the status before power off or restart

to maintain a specific output status setting. This function is only valid when the device digital output

time setting register value is less than 100ms.

The corresponding Modbus register of the switch value restart output status setting is 40085

(0x0054), and its value range is 0x00-0x10. When the value of this register is 0x10, the last digital

output status is maintained after power-off and restart. When the value of this register is 0x00-0x0F,

the lower 4 bits determine the status of the digital output of the device restart, bit4 corresponds to DO4,

bit3 corresponds to DO3, bit2 corresponds to DO2, bit1 corresponds to DO1. For example, when power

is on, DO4 and DO2 are in the closed status (relay NO and COM are closed), DO3 and DO1 are in the

open status (relay NO and COM are open). The corresponding register value is 0000 1010, that is, 0xa0,

"1" is the closed state, and "0" is the open status.