Chengdu Ebyte Electronic Technology Co., Ltd.
E870-E1_User Manual_EN
Copyright ©2012
–
2022,
Chengdu Ebyte Electronic Technology Co., Ltd.
17
Chapter 4 Product function introduction
4.1 DO Output
Two-way A-type relay outputs are used, and 3.81mm phoenix terminals are used to lead out normally open
contacts and common points respectively, which can shut off AC 250V/7A and DC 30V/7A at most.
It can be turned on or off to switch input DO to collect signals and report actively. The active report function
of DO supports configuration change report, period, change period to realize the device's active report
function;
Periodic report: report the current status according to the configured time period, the time interval can be
1-65535, unit: minute;
Change reporting: that is, when the DO status changes, the DO status is reported once, and the range needs to
be set to a non-zero value.
4.2 DI input
Support 4-way dry contact acquisition, switch input DI acquisition signal can be turned on or off to actively
report, DI's active reporting function implementation conditions support configuration change reporting, period,
change rep period to realize the active reporting function of the device;
Periodic report: report the current status according to the configured time period, the time interval can be
1-65535, unit: minute;
Change reporting: that is, when the DI status changes, the DI status is reported once, and the range needs to be
set to a non-zero value.
4.3 AI input mode
It supports 2-channel current signal acquisition, adopts high-resolution ADC, and the acquisition accuracy can
reach 3‰. The factory default configuration is 0-20mA. It supports configuring the acquisition range (register
address is 0x044c) and obtaining the current current signal (floating point) through the Modbus RTU command. :
register is 0x00c8, integer: 0x0064), the maximum current cannot exceed 25mA (more than 25mA will cause
equipment damage);
Support mode 0x00 (0-20mA): directly output the collected current signal;
Mode 0x01 (4-20mA): The current input device below 3.5mA is used for disconnection detection to output
0mA, and the current greater than 3.5mA is directly output;
Take the Modbus address of the device as 1 as an example (the edge acquisition function needs to be turned
off to use this function, and the following commands are in hexadecimal):
Read the collected current signal (integer):
Send: 01 04 00 64 00 02 30 14
