Modbus – D/A converter – HY4AO

Deze Chinese D/A converter komt in meerdere modellen voor, zoals: EM4AO, HSA4O, HY4AO, etc.

Ingangsspanning is 10V met een modbus protocol kan je 4 analoge kanalen instellen van 0 ~ 10V (20mA) in 4096 stappen (12 bit).

Info (ENG)

Product Overview

EM4AO type 4 way analog isolated output module is a universal remote I/O product in automation system. It realizes the control of 4 way analog output by RS485 communication interface.

This module for the whole industrial design, power supply, analog output, RS485 interface implementation in electrical isolated, effectively inhibit the industrial field of various string and common mode interference, to ensure the reliability and accuracy of the data. The RS485 communication interface implements the MODBUS RTU protocol, and can directly connect all kinds of PLC, DCS systems, man-machine screens and configuration software.

Product Features

  • 4 analog output isolation, support 0 ~ 20mA, 4 ~ 20mA, 0 ~ 5V, 1 ~ 5V, 0 ~ 10V format
  • 12-bit resolution, accuracy is better than ± 0.1%
  • built-in keep the timer, improve the security of the control system
  • use the write register to achieve the way the current channel and voltage channel configuration, without opening jumper settings
  • full industrial design, power supply, communication, analog output isolated from each other
  • With hardware to restore the communication parameters of the factory configuration function
  • MODBUS RTU communication protocol
  • DC10 ~ 30V wide range of power input
  • maximum power consumption is only 4W

Specifications

Current output

Voltage output

4 current output, 12 bit resolution, accuracy + 0.1%, 0~20mA/4~20mA format

4 current output, 12 bit resolution, accuracy + 0.1%, 0~5V/1~5V/0~10V/2~10V format

The writing register is used to realize the configuration of the current channel and the voltage channel without setting up the jumper wire setting

Refresh cycle 2ms

Built in hold time timer, holding time constant 0~60.00s

Electrical isolation: 1500V (customizable 3000V)

communication interface Physical type: RS485

Communication protocol: MODBUS RTU

Communication rates: 1200, 2400, 4800, 9600, 19200bps

With hardware force recovery, communication parameters, factory configuration function

Electrical isolation: 1500V (customizable 3000V)

Power input Nominal power supply: DC24V

Input range: DC10~30V

Power consumption: less than 4W

Protection function: anti reverse, anti surge

module structure Configuration: Adam module, 10+10 bit pluggable terminals

Installation: DIN rail installation

Outline size Module parts: 104mm * 72mm * 26mm (excluding terminals and guide block)

Max size: 124mm * 72mm * 45mm (including terminal and guide block)

work environment Operating temperature: -25 ~ +85 DEG C

Ambient humidity: 10~90%RH (without dew)


Pinout

terminal Code Name
1 AO3/I+ Analog output 3 current channel
2 AO3/U+ Analog output 3 voltage channel
3 AOCOM Analog output common end
4
5
6
7 485A RS485 DATA A
8 485B RS485 DATA B
9 VIN+ Power +
10 VIN- Power –
11 AO0/I+ Analog output 0 current channel
12 AO0/U+ Analog output 0 voltage channel
13 AOCOM Analog output common end
14 AO1/I+ Analog output 1 current channel
15 AO1/U+ Analog output 1 voltage channel
16 AOCOM Analog output common end
17 AO2/I+ Analog output 2 current channel
18 AO2/U+ Analog output 2 voltage channel
19 AOCOM Analog output common end
20

Overige info

Indicating lamp

Indicator light Name Color Explain
PWR Power indication Green Slow flashing: power up, Chang Liang: ready, flash: restore communication parameters
TXD Data sending Red send data
RXD Data reception Yellow receive data

Force recovery communication parameters, factory configuration

When the communication parameters are forgotten or the communication parameters are changed due to misoperation, in addition to the configuration software search module, the factory configuration for forcing the resumption of communication parameters can also be carried out as follows:

(1) make sure that the module is powered off;

(2) open the module housing and plug in the short jumper cap on the 6 pin ISP connector P4-P6;

(3) the module is electrified, the module power lamp flashes slowly two times and then becomes flash;

(4) turn off the power supply and unplug the short jumper cap and close the module housing;

(5) the module is powered on, and the communication parameters of the module have been restored to:

Rate of communication: 9600bps

Check mode: no

Local address: 1

Warning: do not plug in short jumper cap before the module is powered down!!!


Foto’s


Mobus registers

Supported function code

Code Meaning operation
03H Read multiple hold registers Reads the values of one or more holding registers
06H Write a single hold register Writes a data to a hold register
10H Write multiple hold registers Write one or more data into a hold register
11H Read device properties Read slave type, status

Hold register (support function code 03H, 06H, 10H)

address Name Actual value range Bit Range factory

Default value

Read / write
40001 Communication speed 1200/2400/4800/9600/19200 Bit15~12 0,1,2,3,4 3 Read / write
Check mode Parity check / parity check / odd check Bit11~8 0,1,2 0
Native address 1~247 Bit7~0 1~247 1
40002 Device type 199 199 199 read-only
40003 Hardware version H0.00~2.55 Bit15~8 0~255 read-only
Software version R0.00~2.55 Bit7~0 0~255
40004 Date of manufacture year,year after 2 bits,2000~2099 Bit15~9 0~99 read-only
month,possision 4 bit,1~12 Bit8~5 1~12
Day,possision 5 bit,1~31 Bit4~0 1~31
40005 Production number Production number (high byte before) 0~65535 read-only
40006 Equipment status 0 power on (self-test) /1 ready, /2 fault 0~2 read-only
40007 Retention time constant 0~60.00s[1] 0~6000 0 Read  write
40008 AO0 signal format 0(0~20mA,0~10V)

1(0~20mA,0~5V)

2(4~20mA,2~10V)[2]

3(4~20mA,1~5V)[2]

0~3 0 Read  write
40009 AO1 signal format 0~3 0 Read  write
40010 AO2 signal format 0~3 0 Read  write
40011 AO3 signal format 0~3 0 Read  write
40012 AO0  preset [3] Analog output 0 channel 0~4095 0 Read  write
40013 AO1 preset Analog output 1 channel 0~4095 0 Read  write
40014 AO2 preset Analog output 2 channel 0~4095 0 Read  write
40015 AO3 preset Analog output 3 channel 0~4095 0 Read  write
40016 AO0 given Analog output 0 channel 0~4095 0 Read  write
40017 AO1 given Analog output 1 channel 0~4095 0 Read  write
40018 AO2 given Analog output 2 channel 0~4095 0 Read  write
40019 AO3 given Analog output 3 channel 0~4095 0 Read  write

[Note 1] Output hold constant – when 0 means that each given AO output will continue until a new given value is written. For 1 to 6000 means that if the given AO output does not update the reference again when the specified hold time is reached, the AO output will return to the initial state (ie, the preset value).

[Note 2] Signal format – When the signal format is set to 2 (4 ~ 20mA, 2 ~ 10V) or 3 (4 ~ 20mA, 1 ~ 5V), the given output will not be less than 819. If a value less than 819 is given, it is still output at the given value of 819.

[Note 3] Preset value – The static value of the output of the channel when the module is powered up or when the hold time is reached.

Device attribute register (support function code 11H)

byte Name Actual value range bit range Read  write
2 Device type 199 199 read-only
2 Hardware version H0.00~2.55 Bit15~8 0~255 read-only
2 Software version R0.00~2.55 Bit7~0 0~255
2 Date of manufacture year,year after 2 bits,2000~2099 Bit15~9 0~99 read-only
month,possision 4 bits,1~12 Bit8~5 1~12
day,possision 5 bits,1~31 Bit4~0 1~31
2 Production number Production number (high byte before) 0~65535 read-only
2 Equipment status 0 power on (self-test) /1 ready, /2 fault 0~2 read-only

Voorbeeld uitlezen

Fabriek gegevens
Standaard adres: 1
Baud rate: 9600
Parity: None
Stopbits: 1

Standaard output is: 0 ~10V