ET1020 – Analog IO Expansion Module

ET1020 is an analog IO expansion module, including 4 channels of 4-20mA analog input and output. The module supports MODBUS RTU protocol, supports cascading, non-inductively expands the number of IO interfaces, and does not require configuration, plug and play, adaptive master-slave station, adaptive register address, has communication delay of milliseconds, and high-speed communication without packet loss or abnormality. , hardware indicators present communication status in real time and other features. It can be used with the main device ET3410 for better results.

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Categories: IO Interface Module, Products

Description

Support MODBUS RTU protocol
Support cascading, non-inductive expansion of I/O ports
No configuration required, Plug and play
Adaptive master-slave, adaptive register address
Communication delay in milliseconds
High-speed communication without packet loss and abnormality
The hardware indicator light presents the communication status in real time

RS485	Number of ports	1 way
	Operating mode	Slave
	Support baud rate	115200/9600/4800/2400
AO	Number of ports	4 way
	Output type	4-20mAoutput
	Sampling accuracy	12bit
AI	Number of ports	4 way
	Input type	4-20mAenter
	Sampling Accuracy	12bit
Electrical Parameters	Rated voltage	DC12V, working range DC12~24V
	Rated power	<1W
	Power protection	Anti-static, anti-surge, anti-reverse connection
Environmental Parameters	Operating temperature	-40~80℃
	Storage temperature	-40~85℃
	Environment humidity	10-90% RH (non-condensing)
Mechanical Parameters	Size	807163mm
	Weight	150g
	Material	ABS

Serial number	Name	Meaning	Serial number	Name	Meaning
1	Pow	Power indicator light, always on	18	GND	AI signal input ground
2	work	Working indicator light, 1 second strobe	19	AI4	AI4signal input
3	Net	reserve	20	GND	AI signal input ground
4	Recv	reserve	21	RST	reset button
5	send	reserve	22	AO1	AO1signal output
6	--	reserve	23	GND	AO Signal output
7	alarm	Alarm indicator light, always on after cascaded device communication abnormal	24	AO2	AO2 signal output
8	link	Connection indicator, always on after cascaded device plugged in	25	GND	AO Signal output
9	Vin	Power input positive stage	26	AO3	AO 3signal output
10	GND	Power input negative	27	GND	AO Signal output
11	485A	RS485-A	28	AO4	AO 4signal output
12	485B	RS485-B	29	GND	AO Signal output
13	AI1	AI1 signal input	30	Dial code	1-5 means the MODBUS communication address, restart to take effect
14	GND	AI signal input ground	31	Dial code	6-8 Set the baud rate, restart to take effect
15	AI2	AI2 signal input	32	M	M port, for upward cascading
16	GND	AI signal input ground	33	S	S port, for cascading down
17	AI3	AI3 signal input