3 Phase Electric Digital Voltage Meter with Analog Output

9.3 RS 485 communication 
  9.3.1 Communication protocol
      9.3.1.1 RS485 communication interface, asynchronous half-duplex mode.
      9.3.1.2 Communication baud rate 4800, 9600bps which can be set. Factory default value is 9600bps.
      9.3.1.3 Data format: N81 no parity bit, 8 data bits, 1 stop bit.
RS485 interface; Connection type: asynchronous half-duplex; International standard Mod bus RTU protocol, instrument address: 1 ~ 247, what is more, it supports 03H read command currently.
Message format:
Command 3 H: read command
Master requests: address + Command + data address + data length + CRC check code
               1byte + 1byte + 2byte+ 2byte + 2byte
Address: in order to query the address code, set within 1 ~ 247 and it takes up one byte
Command: 3 H read command, length is 1 byte
Data address: read data source address, and it takes up 2 bytes
Data length: read data bytes length
CRC16 check code: low 8 bits in front, high 8 bits in the back, and it takes up 2 bytes
Slaver requests: address + Command + data length + data information + CRC check code Address: in order to response the address code and it takes up one byte
Command: 3 H read command, length is 1 byte
Data length: data bytes length which is to send 
Data information: read data, see the meter parameter address table if you want to know specifics
CRC16 check code: low 8 bits in front, high 8 bits in the back, and it takes up 2 bytes
               1byte + 1byte + 1byte+ n byte + 2byte
9.2 Analog transmitting output
Analog transmitting output option: DC4~20mA. Analog transmitting output is linear with input signal isolation, and it is widely applied to PLC, DCS etc collection.
Precision 0.5 grade, load resistance<500Ω while current input, load resistance>100Ω while voltage input.

OEM-ODM Service Offered

1.Material,size and other requirements of  Led Traffic Signal Light can be customized.

2.Please kindly inform us which items you are interested & the reasonable price will be provided you upon receipt of your new inquiry ASAP.

3.Answer your question detailed.

4.Solve the problem with you during using our products.

5.You can visit our website: http://cnhxdz.en.made-in-china.com/

Payment Methods

We accept 30% payment in advance, the balance payment before shipping.

We also accept L/C according to the order amount

We can accept the payment by T/T, Western Union, Paypal, Private Account, Escrow,Cash,and others

Packing And Shipment

We can ship the goods for you by following ways:

1.By Express: DHL, FEDEX, UPS, TNT, SF EXPRESS and China Post, China Small Package and so on.

2. By Air: We can ship from Ningbo, Shanghai, Shenzhen, Hongkong, Urumqi, Beijing.

3. By Sea: We can offer you FOB Ningbo, FOB Shanghai, FOB Shenzhen, FOB Urumqi, FOB XiaMen, FOB Beijing.

4. We also can send to your forwarder or agent in China, who can arrange shipment for you.

 FAQ:

1.Q:How can I get the samples?

  A:If you need some samples to test,please pay for the transportation freight of samples and our samples will be counted on the next order .We send the samples to you only after receipt of your payment.

2.Q:How much the transportation freight will be for the samples?
  A:The freight depends on the weight and packing size and your area.

3.Q:How can I get your Price list?
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4.Q:Can we have our logo or company name to be printed on your products or the package?
  A:Sure.Your Logo can be puted on our products by sticker.And if you want your logo and company name to be printed on the cartons for the products,you can send us the artwork by email.

5.Q:How to order?
  A:Please send us your purchase order by email or fax or you can ask us to send you a proforma invoice for  your order.
 

Thanks for your view,Welcome to visit our

Website:http://cnhxdz.en.made-in-china.com/

Name:Lemon

Tel:+86 13305775392