Chengdu Ebyte Electronic Technology Co.,Ltd
E821-RTU (0400-ETH)User Manual
Copyright ©2012–2019, Chengdu Ebyte Electronic Technology Co.,Ltd
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AI4-
Analog signal input
channel 4 negative
Analog signal input channel, used in combination
with the positive to collect analog data
LED Indicator light
1
PWR
Power supply indication
Red after power on, long bright
2
NET
Ethernet connection
indication
Blue and green two-color LED, the blue LED is long
bright after the Ethernet port TCP/UDP connection is
successful. After power-on, the green LED is lit,
indicating that it is initializing.
3
DATA/RST
Data indication/reset
indication
Blue and green two-color LED, blue LED flashes
when data is transmitted and received, green LED
flashes 3 times after reset
Note: It is recommended to connect the case to the ground..
2.3 Reset button description
Long press for 5S is valid. After the reset is successful, the RST LED flashes 3 times, the Modbus device address,
RS485 serial port baud rate and parity bit are restored to the factory settings, other configuration parameters are
unchanged.
