Mod Bus Encoder

Mod Bus Encoder
Product Details

Resistant to shock, vibration, high reliability

* Varies of working voltage are selectable.
* Varies of machine models are selectable
* Varies of resolution ratio are selectable.
*Small volume, light-weight, economical and universal

Demonstration of the type:

●The flange form is clamping flange
●Screw hole installation
●Key body dimension is 58mm
●Diameter of axle is 10mm;
●Side-out cable;
●Absolute form
●Single-loop resolution is 8192
●Working voltage is 8-29V
●Binary positive logic system
●MODBUS output

Description of Products:

MODBUS encoder, using bundled software, can conduct auto-detect and set of Baud rate, allocate Site URL, and select the accounting direction of encoder.

MODBUS protocol

Adopting MODBUS RTU protocol. 8BIT data bits, no odd-even check, 1BIT stop bit.

Information Frame:

Address CodeFunction CodeData AreaError-Checking Code

Address Code: Primary device puts the device's address which is to contact with into the information frame's address field to select slave device. When slave device sends a reply information, it puts its address into the reply information frame's address in order to let primary device know which slave device made that response. The range of address code is from 1 to 254.

Function Code: When information is delivered from primary device to slave device, the function code would inform slave code what action should be carried out. When slave device replies, it uses function code to judge whether it's a normal reply or an objectionable reply. (Function code's top position of objectionable reply is 1). MAGA series encoder only support function code03 till now.

03reading datareturn to encoder's current value

Data Area: The information that primary devices send to slave devices includes some additional information that needs to be carried out by encoder. Without error, the data area sent back from slave devices include the data required by primary devices. If there's an error, objectionable code is included in this area.

Error-Checking Code: Error-Checking adopts CRC method, mainframe and encoder can use checking code to judge whether there's any wrong when accept information. When the data is transmitted, low-order of CRC value ahead, and high-order behind. The generator polynomial that CRC adopts is  g(x)=X16+X12+X 5 +1

Technical parameters

Environmental Parameter

Operating Temperature


Relative Humidity

30~85%RH(No Condensation)

Level of Protection


Electric Parameter

Supply Voltage

5V,12V,24 or 8~29V

Mechanical Parameter

Maximum permissible Revolution


Impact Resistance

GB/T 2423.5-1995 100g,6ms

Vibration Resistance

GB/T 2423.10-1995 10g,10~500Hz

Starting Torque






Rotational Inertia


Permissible Angular Acceleration


IDENCODER is one of the leading Bus-Based Encoder manufacturers and suppliers, equipped with one of the famous brands, welcome to buy our customized mod bus encoder in stock and you are also welcomed to check the price, pricelist or the quotation with our factory.