GCAN-IO-8100
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GCAN-IO-8100 Modbus I/O coupler User manual

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Vhandy technology

Vhandy technology 1. Introduction 1.1 Overview GCAN-8100 Modbus I/O Coupler can be used to connect Modbus system and distributed bus terminal module, and these terminal modules can be expanded in a modular way. A complete node consists of a bus coupler, 1-32 arbitrary number of terminal modules and a terminalmodule GCAN-8100 ModbusBus Coupler uses standard Modbus protocol, a standard slave station. The GCAN-8100 Bus Coupler has two kinds of style, GCAN-8100-TCP supports Modbus TCP communication, GCAN-8100-RTU supports Modbus RTU communication. Besides, the firmware can be upgraded by...

Vhandy technology ● Supply power: 24V DC(-15%/+20%) ● Input current, 70mA+ (total GC-bus current), maximum4500mA ● Starting current: about 2.5 times continuous current ● Power contacts: maximum 24V DC/maximum10A ● Electrical isolation: 1000 Vrms (power contact/bus coupled power voltage) ● Working temperature: -40.00℃~85.00℃ ● Standard DIN rail, designed for industrial design ● Dimensions：100mm(L) * 69mm(W) * 48mm(H) 1.3 Typical application ● Connect with the distributed bus terminal module to form a complete control node ● Perform data acquisition and data transmission w

Vhandy technology 2. Installation and usage This chapter introduces the method installation and wiring,the meaning of the indicator and the interface. 2.1 Fixed module The installation method of GCAN-8100 Modbus bus Coupler is shown in Figure 2.1 Figure 2.1 GCAN-8100 module installation Figure 2.2 GCAN-8100 module self-locking mechanism As shown figure 2.1, install the GCAN-8100 Modbus Bus Coupler on the guide rail until the lock is stuck. The GCAN-8100 Modbus Bus Coupler has a self-locking mechanism that can effectively prevent equipment from falling. As shown figure 2.2, you can release...

Vhandy technology The GCAN-8100 Modbus Bus Coupler can connect up to 32 distributed bus terminal modules. When inserting bus terminal module, be sure to insert it along the groove on the right side of the existingmodulesequentially until the lock is stuck. At theright end of the entire node, you need to installterminal module. The terminal will guarantee the data transmission and power supply of the GC-Bus. When youassemble the nodes correctly, there is no obvious gap between the terminal modules. If the modules are not assembled correctly, the entire node will not operate normally. 2.2...

Vhandy technology Figure 2.4 GCAN-IO-8100 module wiring terminal block The wiring terminal block of the GCAN-8100 Modbus Bus Coupler is shown in Figure 2.4, including 8 terminals. Thenumber corresponding to each terminal and its meaning are shown in Table 2.1. Note: connecting between terminal 3 and terminal 4, terminal 5 and terminal 6, terminal7 and terminal 8 inside the module. Terminal 24V 1 Input 24V power 0V 2 GND power + 3 IO positive power + 4 IO positive power 5 IO negative power 6 IO negative power PE 7 shield PE 8 shield Table 2.1 GCAN-8100 module, wiring terminal definition 2.3...

Vhandy technology PWR green Power SYS green System RUN green Run ERR green Error IO RUN green GC-Bus run IO ERR green GC-Bus error NO.1 on the right green Power NO.3 on the right green GC-Bus power Table 2.2 GCAN-8100 module, indicators Indicator PWR SYS RUN ERR IO RUN IO ERR bright not bright Blinking not bright Blinking not bright bright not bright Blinking not bright bright not bright Power supply normally Power supply abnormally Working status Initialization error Run normal stop System error System normal GC-Bus run normally GC-Bus stop GC-Bus error GC-Bus normal Terminal module NO.1...

Vhandy technology 2.4 Interface definition GCAN-IO-8100 Modbus bus coupler is composed of bus communication module and power supply module. The bus communication module integrates one Ethernet interface, one RS232 or RS485 interface, and one CAN bus interface, which are led out by RJ45 interface, RJ45 interface, and terminal interface respectively. The RS232 or RS485 interface style is shown in Figure 2.5, and its interface definition is shown in Table 2.4; Figure 2.5 RS-232 interface style of GCAN-IO-8100 Terminal

Vhandy technology 3. Communication connection 3.1 Serial connection GCAN-8100-RTU module uses standard serial port level（RS485), so the module can directly connect to the device with RS485 interface. 3.2 Ethernet connection Users can connect directly to the LAN interface of the GCAN-8100-TCP module by more than 5 kinds of cable and establish communication.

Vhandy technology 4. Communication example GCAN-8100 Modbus Bus Coupler execute Modbus communication protocol for Modbus slave devices. When equipped with the GC-1008 module (8-channels digital input), the GCAN-8100 will store the DI data in the Modbus digital input register. You can read it using the 02 function code. When equipped with GC-2008 module (8-channels digital output), GCAN-8100 will store DO data in the Modbus digital output register, you can write it down through 05, 15 function code, read it through the 01 function code. When equipped with GC-3804 module (4-channels PT100...

Vhandy technology 4.1 Equipped with GC-1008module The state of the digital input is represented by one byte, channel 8 is high and channel 1 is low. Eg: GCAN-8100 module node number is set to 1. The channel 8 and channel 4 status are 1 and the other status are 0, and the DI status data displayed on one end of the Modbus is 88.The following table lists two common DI states and their corresponding state data. DI State Channel Number Modbus data Channel Number Modbus data 4.2 Equipped with GC-2008module The state of the digital output is represented by one byte, channel 8 is high and channel 1...

Vhandy technology DO State Channel Number Modbus data DO State Channel Number Modbus data 4.3 Equipped with GC-3804 module The temperature status of each channel is represented by two bytes, eight bytes for four channels. Among them, the two bytes representing the temperature state, the first byte is low, and thedataofbyte to be converted to decimal and multiplied by 0.1. The second byte is high, the data of byte need to be converted to decimal and multiplied by 25.6. Finally add the two values, which is the final temperature value, and the unit is degrees Celsius. Eg: The temperature of...