Type:Logic ICs
Condition:New
Chapter 1 product introduction
One Summary
MB4AO 4Four analog signal output modules, i.e. 0-20mA, 4-20mA, 0-5Vand 0-10V, can control the data output of 4AO by isolating RS48Fiveinterface. The module adopts Modbus-RTU communication and can directly adapt to PLC, DCS and various configuration software in China.
Analog output, power supply and RS485 communication electrical signals are isolated from each other, which can effectively suppress all kinds of serial and common mode interference, ensure the accuracy of data, and also ensure the reliable work of the module.
Two. Characteristic
1. The standard Modbus-RTU protocol is adopted.
2. The output signal types of each channel can be set according to their needs..
Three AOAnalog output mode
| Module function mode | Functional characteristics |
| Power on load preset mode | 1. Analog output [AOThe initial value can be set to load a value, which is loaded by default.0Value. 2. When the module is on power, analog outputAOLoading [AOInitial value of power. |
| Power on load mode | 1. The power supply of the module is continuously monitored. When the module is powered down, the current storage is recorded.AOChannel output value. 2. When the module is powered on again, analog output.AOLoad the last time before power failure. |
4. Safety: signal output, power supply, RS485 communication and electrical signals are isolated from each other.
5. Communication protection: RS485 communication signal output interface adopts over voltage and over current double protection.
Six The output signal type and communication format can be set up by jumper and software.
7. Power polarity protection.
Three. Technical indicators
| project | parameter |
| AO signal output | 1Output channel: 4 channel isolated analog output. 2Output signal type: 0~20mA, 4~20mA, 0~5V, 0~10V four analog signals. 3Sampling rate: 4 channel 5mS can be updated once. 4Resolution: 12 bit 5CollectionAccuracy: voltage 0.2% current 0.3% SixIsolated voltage protection: 1500V |
| RS485 Communication output | 1Communication protocol: MODBUS-RTU 2Interface type: isolated RS485 communication, output interface adopts over voltage and over current double protection. 3Baud rate: 1200BPS, 2400bps, 4800bps, 9600bps, 19200bps 4Check bit: no check, parity check, odd check. 5Setting mode: module address, baud rate, parity bit can be set by software. SixIsolated voltage protection: 1500V |
| Module size | A.Single module size: 104mm*72mm*26mm B.Terminal and guide box size: 124mm*72mm*45mm |
| Installation method | Standard DIN guide rail installation (35mm guide or high and low guideway) |
| work environment | Temperature: -10 ~ +55 C humidity: 35~85% (no condensation). |
| Working power supply | 1Power supply voltage: 10V~30V wide range of power supply, polarity protection with power supply 2Power consumption: less than 4W |
Four. Product appearance and peripheral wiring diagram
Five. Module indication light and switch function description
1. POW/SET;Module work status indication
A.Green lights: modules are working. B. red light: module has configuration parameters written, need to power up again.
2. TXD/RXD:Communication status indication
A.Green light: communication receives data B. red light flashes: module is sending data.
C.The green light is always bright: the communication RS485 line on DATA+ and DATA- is reversed or the connection is broken.
Three Module right reset switch
A. When the communication parameters (module address, baud rate, check bit) are not known or the communication parameters are misplaced, the solution is to reset the communication parameters. Five seconds later, the module [POW/SET] red indicator lights on and the reset switch is opened. At this time, the communication can be achieved. The parameters have been reset, so long as the power supply of the module is powered off and restarted once, then the communication parameters of the module have been reset.
B. After the reset, the communication parameters are: 1, baud rate: 9600bps, check bit: none.
Six. Typical application wiring diagram
Seven. Terminal definition
| terminal | Name | Explain | | terminal | Name | Explain |
| 1 | NC | empty | 14 | A00I | Analog channel 0 current output |
| 2 | NC | empty | 15 | A00V | Analog channel 0 voltage output |
| 3 | NC | empty | 16 | AOGND | Analog channel 0 output negative terminal |
| 4 | NC | empty | 17 | A01I | Analog channel 1 current output |
| 5 | NC | empty | 18 | A01V | Analog channel 1 voltage output |
| 6 | NC | empty | 19 | AOGND | Analog channel 1 output negative terminal |
| 7 | NC | empty | 20 | A02I | Analog channel 2 current output |
| 8 | NC | empty | 21 | A02V | Analog channel 2 voltage output |
| 9 | NC | empty | 22 | AOGND | Analog channel 2 output negative terminal |
| 10 | DATA+ | RS485Communication + | 23 | A03I | Analog channel 3 current output |
| 11 | DATA- | RS485Communication - | | 24 | A03V | Analog channel 3 voltage output |
| 12 | +Vs | Power input + | | 25 | AOGND | Analog channel 3 output negative terminal |
| 13 | GND | Power input - | | 26 |
