2-Channel Product Overview:

The module can collect up to two analog signals (4-20mA) on site and upload them through the standard ModBus-RTU communication protocol of 485 interface. The maximum communication distance of 485 interface is 1000 meters. It can be directly connected to the PLC, industrial control instrument, configuration screen or configuration software on site. Acquisition accuracy 12-bit resolution, 0.1% accuracy. It can be widely used in industrial sites, distribution cabinets and other places requiring analog signal acquisition.

Functional characteristics

1, DC7-30V anti-reverse connection, over voltage protection, over current protection, short circuit protection

2, 2-way analog current input 4 ~ 20mA (compatible with 0-20mA)

3, two analog voltage input 0 ~ 5V, 0 ~ 10V

4, 2 relay switching output

5, 12-bit resolution, 0.1% precision ADC

6, support standard Modbus-RTU communication protocol

7, communication operation indicator light, anti-crash guard dog

8, with lightning protection, electrostatic protection RS485 communication port, operation amplifier signal isolation

9, each channel analog signal acquisition range can be set independently

10. The address, baud rate and check bit can be set by the upper computer software

Main technical indicators:

Power supply: 5-30 VDC (12VDC is recommended)

Power consumption: 0.3W

AD conversion resolution: 12 bits

Collection signal: 4 to 20mA(compatible with 0 to 20mA), 0 to 5V, 0 to 10V Optional

Storage environment: -40 ° C to 60 ° C

Communication port: RS485

Communication protocol: ModBus-RTU

Acquisition accuracy: ±0.1%

Address range: The factory default is 0x01. The value range is 0x01-0xfD

Serial port parameters: 1200-115200 BPS configurable, factory default baud rate 4800 N 8 1

Collection frequency: 115200 baud rate 100HZ(100 times/second)

9600 baud rate fastest 20HZ (20 times/second