Bm16AI-ETH

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Contents


Introduction

Img02.jpg

The bm16AI-ETH is a high quality and low cost Ethernet data acquisition module with 16 analog inputs. Each input has lightning and surge protection, can be any combination of:

  • 0-5V
    • 0-20mA
      • 0-10V,
        • Dry contact
          • NTC 10K thermistor.

Fast speed MCU can handle high frequency pulse and store counter into EEPROM. Output is Ethernet with MODBUS/TCPIP protocol, also has a RS485/RS232 port with standard modbus protocol to configure the module.


Technical Features

Basic specifications

Item Description
Resolution 12 bit or (model Bm16AI-ETH-16) 16 bit
Input channel number 16
Input Range 0~5V, 0~10V, 4~20mA, 10K thermistor, dry contact
Input protection Lightning,static
Accuracy ±0.1%
Sample rate 200sample/second(16 channels)1000 sample/second(1 channel)
Output BUS Ethernet/RS485
Output Protection Lightning,static

Supply Voltage

Item Description
Power input 12~24V(AC/DC)
Power consumption 39mA@24VDC
Operation -20~85℃(-13~185℉)
Storage -40~100℃(-40~212℉)
Ambient humidity 10%~90%RH

Dimensions

LXHXP (mm) : 105x60x118 din rail mounting

Modbus registers:

ADDRESS BYTES Value Range MIN Value Range MAX DESCRIPTION PROPERTY
0-3 4 1 4294967295 Serial number, unique for each product R
4-5 2 100 65535 Firmware version number R
6 1 1 254 Device Address R/W
7 2 6116 6116 Product Model R
8 1 1 255 Hardware Version R
9 2 12 1152 Baudrate Setting
ADDRESS BYTES
12 1200
24 2400
48 4800
96 9600
192 19200
384 38400
576 57600
1152 115200
R/W
100-115 2 0 4095 Channel 1 through 16 reading ,the units decided by register 117 through 132. R/W
116 2 1 65535 Enable/disable the corresponding channel,0 = disable,1* = enable.Bit0 correspond to channel 1 and Bit15 correspond to channel 16.For example, enable channel 1,2 and disable channel 3 through 8,write 0x03 to

register 117.

R/W
117-132 1 0 8 Channel 1 through 16 units setting.0* = raw AD sample reading,1 = 0~5V(real value = the current reading / 100,for example, the current reading is 288,the real voltage is 88/100 = 2.88V),2 = 0~10V(real value = current reading / 100),3 = 4~20mA(real value = the current reading / 100),4 = 0~100%,5 = ON/OFF,6 = OFF/ON,7 = 10K thermistor, Celsius (real value = current eading / 10),8 = 10K thermistor, Fahrenheit(real value = current reading / 10). R/W
133-148 1 0 100 Channel 1 through 16 Filter factor,0 = no filter,10* is default. R/W
149,151,153... 2 0 4095 In calibration mode, channel 1 to 16 sample data as input 0 volts R/W
150,152,154... 2 0 4095 In calibration mode, channel 1 to 16 sample data as input is full scale R/W
181 1 2 255 Serial port respond delay, the units is 2.5ms,default 2 means (2-1)*2.5=2.5ms,real delay equal (value – 1)*2.5ms R/W
200-203 1 0 255 Device local IP address, default is 192.168.0.X R/W
204-207 1 0 255 Gate way address, default I is 192.168.0.1 R/W
208-211 1 0 255 Subnet address, default is 255.25.255.0 R/W
212-217 1 0 255 MAC address R/W
218 2 0 65535 Port number, default is502 R/W


DEFAULT SETTINGS

  • Device ID: 254, 255 is broadcast address
  • Data Format: 1 start bit, 8 data bit, 1 stop bit, none parity
  • Baudrate: 19200
  • Interface: Ethernet and RS485

To change the speed: write 96 to register 9 to set the baudrate 9600

WIRING EXAMPLE

Connection.jpg
Img01.jpg


Photo

Bmeth01.jpg Bmeth02.jpg Bmeth04.jpg

References

Licensing

This documentation is licensed under the Creative Commons Attribution-ShareAlike License 3.0

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