GCAN-205 Modbus TCP to CAN converter

Brand: GCAN
Model: GCAN-205

Product Introduction


The GCAN-205 is a CAN to Modbus TCP Slave Converter with one Ethernet interface and one CAN interface. It allows user to connect some ModTCP Master with an existing CAN network.
It has integrated isolation protection module and easier to install with DIN-rail.

CAN connector Open terminal block
CAN interface CAN 2.0A, CAN 2.0B, conform to ISO11898-2
CAN baud rate 5kbit/s to 1Mbit/s
Ethernet interface RJ45, 10/100M self-adaptive
Isolation DC 1500V electrical isolation
Modbus slave function code 03H, 04H, 06H, 16H
Size (LxWxH) 113 x 100 x 21 mm
Weight approx.120g
Operating temperature -40°C~85°C
Humidity 15 to 95% non-condensing
Installation DIN rail
Power supply
Voltage 9~30V DC
Current 20mA, 24V DC

The GCAN-205 converter is a standard Modbus Slave station. It will load the data received on CAN bus into the register (address) and wait for the instructions sent by Modbus Master station to read.
When the converter receives the reading instruction, it will send the data from specified register (address) to the Modbus Master station.
When the converter receives the sending instruction, it will progress the Modbus data and send to CAN bus.



  •  High-speed 32-bit processor;
  •  Embedded hardware watchdog timer;
  • Power supply voltage: DC 24V, maximum current: 40mA;
  • Electrostatic discharge immunity level: contact discharge ± 2KV, air discharge ±15KV;
  • Electrical fast transient burst immunity level: ± 1KV;
  • Surge immunity level: ± 1KV;
  • Operating temperature range: -40 ℃ ~ +85 ℃;
  • Operating humidity range: 5% to 95% RH no condensation;
  • Dimensions:113mm * 100mm * 21mm;
  • Standard DIN rail mounting, designed for industrial design.


  • Integrated 1 CAN-Bus interface with terminal;
  • CAN-Bus signals include: CAN_H, CAN_L, CAN_GND;
  • CAN-Bus supports CAN2.0A and CAN2.0B frame format, conform to ISO/DIS  11898 standards;
  • CAN-Bus baud rates range from 5Kbps to 1Mbps;
  • CAN-Bus isolation converter insulation voltage: DC 1500V.


  • RJ45, support 10 / 100M adaptive;
  • Modbus slave support function code: 03H, 04H, 06H, 16H;
  • Support static or dynamic IP access;
  • Support heartbeat and timeout interrupt function;
  • The working port is fixed, the target IP and the target port can be set;
  • After the network is disconnected, the connection resource is automatically restored and the CP connection is established reliably;
  • Support protocols include EtherNET, ARP, IP, ICMP, UDP, DHCP, DNS, TCP;
  • Compatible with SOCKET work (TCP Server, TCP Client, UDP, etc.), the host computer communication software follows the standard SOCKET rules.
Our Service

Standard package: Carton
Delivery Time
2~5 days after receipt of your payment by air express
After-sale service
GCAN provide one year free after-sales warranty, lifetime free software and technical support.
User Manual(Click to view)

Converter GCAN-205CAN-ModbusTCP