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Type:Logic ICs

GCAN-201

232/485-CANconverter

UserManual

Document version：V3.05（2017/07/05）

Contents

1Introduction3

1.1Overview3

1.2Propertiesataglance3

2Installation4

2.1ConnecttoPC4

2.2ConnecttoCAN-Bus4

2.3Interfacedefinition4

2.4SystemLED5

3Configurationinstructions7

3.1Readytoconfigure7

3.2Softwareconnection7

3.3Configuretransformationparameters7

3.4Configureserialportparameters8

3.5ConfigureCANparameters9

4Examples11

4.1Transparentconversion11

4.2Transparentconversionwithidentity13

5TechnicalSpecifications14

Salesandservice15

1Introduction

1.1Overview

The GCAN-201 converter has integrated one standard CAN-Bus interface, one Serial-Bus interface (RS232 or RS485). GCAN-201 converter can build a connection between Serial-Bus and CAN-Bus. With this converter, equipment that used Serial-Bus can connect to CAN-Bus without changing the hardware structure, this makes multi-Bus interconnection very flexible, and extends the application scope of CAN-Bus.

1.2Properties at aglance

lStandard serial port level, RS232 model or RS485 model can switch by software

lConversiondirectioncanbesetto:CANßàSerial,CANßSerial,CANà

Serial

lSerial Bus baud rate range from 600bps to115200bps

lCAN-Bus supports CAN2.0A and CAN2.0B frame format, conform to ISO/DIS 11898standards

lCAN-Bus baud rates range from 5Kbps to1Mbps

lCAN-Bus interface with electrical isolation

lCAN-Bus isolation module insulation voltage: DC1500V

lPower supply: 9~30V(20mA, 24V DC)

lInstallation method: DIN guiderail

lWorking temperature range from -40 to 85°C

lSize: (L)112mm * (W)70mm *(H)25mm

2Installation

2.1Connect toPC

The converter can be connected directly to a PC using an USB to RS232 cable. If PC have RS232 port, using RS232 directly is also possible.

2.2Connect toCAN-Bus

In practical use, connecting the CAN_H to CAN_H and CAN_L to CAN_L, then communication can be realized.

2.3Interfacedefinition

GCAN-201 converter port definition as shown in figure 2.1 and figure 2.2, using the terminal and the RS232 port, for industrial field application.

Figure 2.1 GCAN-201 RS232 port definition

Figure 2.2 GCAN-201 terminal definition

Note: The CAN-Bus network adopts topological structure, only the two furthest terminal need to connect 120Ω terminal resistance between CAN_H and CAN_L. For branch connection, its length should not be more than 3 meters. CAN-Bus nodes connection as shown in figure 2.3.

Figure 2.3 CAN-Bus network

2.4SystemLED

GCAN-201 converter with one PWR indicator, one COM indicator, one CAN indicator to indicate the converter status. More functions are shown in table 2.1.

Indicator	State	Meaning
PWR	ON	Power supply normal
PWR	OFF	Power supply error
COM	OFF	No data
COM	Blinking	COM data transmission
CAN	OFF	CAN-Bus no data
	Red	CAN-bus error
	Blinking	CAN-Bus data transmission

Table 2.1 GCAN-201 converter LED state

If PWR indicator lights up, it indicates that you plug GCAN-201 converter into an electricity supply, and the system is initialized.

Otherwise, a system power failure or system error has exist.

When Serial-bus data is being transmitted, COM indicator will blinking.

When CAN-bus data is being transmitted, CAN indicator will blinking in green. If CAN error occurs, CAN indicator will turn red.

When COM and CAN indicator blink alternately, it means the adapter is in configuration mode.

3Configurationinstructions

3.1Ready toconfigure

First, power on the converter, then using a thimble click reset button at the side of the DB9 interface module. Module of COM light and CAN light flashing interactively, that module to enter configuration mode. After connecting the module of the RS232 interface and PC, enter the device manager to find the serial port Number.

Note: the serial NO.(COM) can be modified in device manager interface, GCAN-201 can only be configured through the RS232 interface.

3.2Softwareconnection

When the GCAN-201 converter enter the configuration mode and in connection with PC via a serial port, open the“RS232CAN-Config”software as shown in figure 3.1.

Figure 3.1 RS232CAN-Config main interface

3.3Configure transformationparameters

Transformation parameters interface as shown in figure 3.2. GCAN-201 supports two kinds of working mode ： Transparent conversion and Transparent conversion with identity. GCAN-201 supports three kinds of conversion direction ： bidirectionalswitching、CAN→serialport、serialport→CAN. Workingmodeand conversiondirectioncanbemodified in“转换参数”.

Figure 3.2 Working mode setting

3.3.1Transparentconversion

GCAN-201 will convert the data to the other side immediately if GCAN-201 receives data without adding data and make changes to the data.

“ 允许 CAN 帧信息转发到串行帧中”（Allows CAN frame information to be forwarded to the serial frame）and “允许 CAN 帧标识转发到串行帧中”(Allows CAN frame ID to be forwarded to the serial frame) are only available in Transparent conversion mode.

3.3.2Transparent conversion withidentity

Transparent conversion with identity will convert the data of Serial frame by adding an address into the CAN frame ID . The start position and length of the address can be configured.

3.4Configure serial portparameters

Serial port parameter settings shown as Figure 3.3, GCAN-201 supports serial port baud rate(串口波特率)from 600bps~115200bps, the other parameters do not need to set up.

GCAN-201 can switch modes of RS232 or RS485 in serial port parameters(“串口参数”). Click “写配置”（download）after the completion of the configuration, after that you should power-on again.

Figure 3.3 Serial port parameter Settings

3.5Configure CANparameters

CAN parameter setting is shown as Figure3.4. Users can set basic information of CAN-Bus, including CAN baud rate(波特率) and CAN frame type(帧类型).

CAN baud rate supports: 1000K, 500K, 250K, 200K, 125K, 100K, 50K, 20K, 10K, 5K.

CAN frame type supports: standard frame(标准帧), extension frame(扩展帧). CAN frame ID(“发送标识符”）only available in Transparent conversion mode.

GCAN-201 can enable the filter by checking“滤波器使能”. After setting the range and the mode, click add(“添加”).

Figure3.4 CAN parameter setting

When the configuration is completed, click “ 写配置 ” to download the module parameters.

When the parameters download is complete, users need to power-on again to effect the new configuration.

4Examples

4.1Transparentconversion

1.Serialport→CAN

GCAN-201 will send the serial data to CAN-Bus immediately if GCAN-201 receive the serial data.

E.g. Serial data 11 22 33 44 55 66 77 88 converts to CAN-Bus. Frame ID is the configuration for“发送标识符” which users have set. Frame data is 11 22 33 44 55 66 77 88.

2.CAN→Serialport

GCAN-201 will send the CAN data to serial port immediately if GCAN-201 receive the CAN data.

E.g.：Check“允许 CAN 帧信息转发到串行帧中”and“允许 CAN 帧标识转发到串行帧中”which means the CANframe information（帧信息）and the frame ID（帧标识）will display in the serial frame.

CANframeisstandarddataframe.FrameIDis0001.Framedatais1122334455

667788.GCAN-201convertstoSerialport.Serialdatais0800011122334455

66 77 88.

4.2Transparent conversion withidentity

Transparent with identity transformation is the special usage of Transparent conversion.

1.Serialport→CAN

Users can set the start position address and the length of the CAN frame ID in the configuration.

E.g.：If the CAN frame ID starting position address is 1, the length is 2 in the Serial

frame.

Serial frame data is 01 23 33 44 55 66 77 88. GCAN-201 converts to CAN. CAN

frame ID is 123, and frame data is 33 44 55 66 77 88.

2.CAN→Serialport

E.g.：If the CAN frame ID starting position address is 1, the length is 3 in the Serial frame（Extension frames）. Conversion is shown as Figure below.

5 Technical Specifications

Connection
Serial interface	RS232：DB9；RS485：Terminal blocks
CAN interface	Terminal blocks
Interface characteristics
Serial interface	Standard RS232/RS485 interface
Serial port baud rate	600bps~115200bps
CAN interface	ISO 11898 standard, CAN2.0A/B
CAN baud rate	1000K, 500K, 250K, 200K, 125K, 100K, 50K, 20K, 10K, 5K
Electrical isolation	1500V，DC-DC
CAN termination resistors	None. You can add it between CAN_H and CAN_L if you need it.
Power supply
Power supply voltage	+9~30V DC
The power supply current	Maximum 20mA (24V DC)
Environmental testing
Working temperature	-40℃~+85℃
Working humidity	15%~90%RH, no condensation
EMC test	EN 55024:2011-09 EN 55022:2011-12
Protection grade	IP 20
The basic information
Outline size	112mm 70mm 25mm
Weight	100g