Basic Info.
Model NO.
GCAN-204
Support Network
Modbusrtu to Can Module
Information content
Data
Certification
CE
Condition
New
Certificate
ISO/Dis11898
Can2.0A and Can2.0b
Support
Installation Method
DIN Rail
Electric Isolation
DC1500V
Can Bus Communication Baud Rate
5kbps~1Mbps
Serial Interface Baud Rate
600BPS~115200BPS
Modbus Slave Support Function Code
03h, 04h, 06h, 16h
Receive Maximum Data Flow
400 Fps
Connection
RS485, Can Interface Use Terminal
Transport Package
Carton
Specification
113x100x21mm
Trademark
GCAN
Origin
China
HS Code
8543709990
Production Capacity
10000
Product Description
GCAN-204 converter has one CAN-Bus interface, one serial interface. The GCAN-204 integrates the Modbus RTU protocol. With the GCAN-204 , user can use the serial bus connect to other equipment (with Modbus RTU protocol) access the CAN-Bus communication interface.GCAN-204 has integrated isolation protection module. Using DIN railway fixed, it can be easier to integrate into the control cabinet.
Hardware Features
1. High speed 32-bit industrial grade processor
2. Embedded Watchdog timer
3. External voltage (DC+24V, 40mA)
4. Electrostatic discharge (ESD) Immunity level: Contact Discharge±2KV, Air Discharge±15KV
5. Fast transient Burst Impedance Level: ±1KV
6. Surge immunity level: ±1KV
7. Working temperature: -40.00ºC~ 85.00ºC
8. Working humidity: 5%~95%, no condensation
9. Dimensions: 115mm (L) * 100mm (W) * 22mm (H)
10. Customization
CAN Features
1. Integrate one CAN-Bus channel, with terminal connection
2. Support CAN2.0A and CAN2.0B, conform to ISO/DIS11898
3. Support communication baud rate: 5Kbps~1Mbps
4. Electric isolation, insulation level: DC 3000V
Ethernet Features
1. Restore the network connection automatically after disconnecting, can establish a TCP connection.
2. Support protocol including Ethernet, ARP, IP, ICMP, UDP, DHCP, DNS, TCP
3. SOCKET working mode compatibility (TCP Server, TCP Client, UDP, etc), program communication software according to standard
SOCKET rules
4. Support secondary development, we can provide VB routine or you can look for some another basic programming routine about
Ethernet online
Application 
Examples The user can use the included serial debugging assistant to send Modbus instruction debugging.
Please note: choose "hexadecimal display" and "hexadecimal send" when using the serial debugging assistant.
1 Receive CAN data
Please note: choose "hexadecimal display" and "hexadecimal send" when using the serial debugging assistant.
1 Receive CAN data
For example, configure the Modbus slave address: 1, Modbus register first address: 0x01, CAN: standard frame, frame ID: 0x181, CAN frame data:
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08.
User Modbus master sends request frame:
01 03 00 01 00 04 15 C9
GCAN-204 response frame:
01 03 08 02 01 04 03 06 05 08 07 17 C1
Please note that the CRC is calculated by the CRC16 checksum calculator. (With disk)
At this point, the GCAN-204 module has received a data frame with a frame ID of 0x181 from the CAN terminal of other equipment.
3.2 Transmit CAN data
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08.
User Modbus master sends request frame:
01 03 00 01 00 04 15 C9
GCAN-204 response frame:
01 03 08 02 01 04 03 06 05 08 07 17 C1
Please note that the CRC is calculated by the CRC16 checksum calculator. (With disk)
At this point, the GCAN-204 module has received a data frame with a frame ID of 0x181 from the CAN terminal of other equipment.
3.2 Transmit CAN data
For example, Modbus slave address: 1, Modbus register first address: 0x101 (decimal: 257), function code: 16 (10H), CAN: standard frame, frame ID: 0x201, CAN frame data:
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08.
User Modbus master sends request frame:
01 10 01 01 00 04 08 02 01 04 03 06 05 08 07 CB 2E
GCAN-204 response frame:
01 10 01 01 00 04 91 F6
Please note that the CRC is calculated by the CRC16 checksum calculator.
At this point, the CAN terminal of other equipment has received a data frame with a frame ID of 0x201 from the Modbus side of the GCAN-204 module.
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08.
User Modbus master sends request frame:
01 10 01 01 00 04 08 02 01 04 03 06 05 08 07 CB 2E
GCAN-204 response frame:
01 10 01 01 00 04 91 F6
Please note that the CRC is calculated by the CRC16 checksum calculator.
At this point, the CAN terminal of other equipment has received a data frame with a frame ID of 0x201 from the Modbus side of the GCAN-204 module.
