Communication Function; Documents Of Ivc Series Small Plc; Modbus Protocol Network; Free Port Protocol Network - INVT IVC2H Programming Manual

Programming manual of IVC series small PLC

1.3 Communication function

The main module of IVC1/2L series small PLC has two integrated serial ports: PORT0 and PORT1, the main module of IVC1S
series small PLC has one integrated serial port: PORT0, and the main module of IVC1L and IVC2H series small PLC has three
integrated serial ports: PORT0, PORT1 and PORT2. The extension modules including 485 communication module are also
available for the communication in a fieldbus network.
Three serial ports are compatible with Modbus, N:N and user-defined free port protocols.
1.3.1

Modbus protocol network

The main module can set up a RS485 Modbus network with multiple inverters, PLCs and other intelligent devices through the
RS485 port on PORT1 and PORT2, or through PORT0 and a RS232/485 converter. The maximum communication distance is
1200 meters and the maximum baud rate is 115200bit/s. RTU and ASCII transmission modes are optional.
The main module can communicate one-to-one with inverters, PLCs, touch screens and instruments through the RS232 port
on PORT0 and PORT1. The maximum communication distance is 15 meters and the maximum baud rate is 115200bit/s.
For details about the Modbus network, see 错误！ 未找到引用源。 错误！ 未找到引用源。 and Appendix 7Modbus communication
protocol (IVC1, IVC2L series).
1.3.2 N:N protocol network
IVC1/IVC1L/IVC2L/IVC2H series PLC is embedded with INVT-developed N:N communication protocol, capable of setting up
an N:N communication network through the RS485 port on PORT1 and PORT2, or through PORT0 and a RS232/485
converter.
The N:N communication protocol allows single/double-layer networking and data exchange among 2~32 PLCs with the
maximum baud rate of 115200bps.
For details about the N:N network, see 错误！未找到引用源。错误！未找到引用源。 .
1.3.3

Free port protocol network

The free port protocol allows communication with customized data format and supports ASCII and binary system. In this
communication mode, the PLC can communicate with various equipment with customized formats, such as inverter, barcode
scanner, instrument and other intelligent devices. PLC can communicate with a single device in the RS232 or RS485 mode, or
form a RS485 network when there are multiple devices.
For details about the free port protocol communication, see 错误！未找到引用源。错误！未找到引用源。 .

1.4 Documents of IVC series small PLC

You can download the documents of IVC series small PLC at www.invt.com. If you need the printed copy, please contact your
agent.
1.4.1 Selection manual
IVC1 Selection Manual
IVC2L Technical Manual
IVC2H Selection Manual
1.4.2 User manual of main module
Quick Start User Manual of IVC1 Series PLC
User Manual of IVC1 Series PLC
Quick Start User Manual of IVC1S Series PLC
User Manual of IVC1S Series PLC
IVC1 series
IVC1S series
Chapter 1 Product overview
IVC2L series
Quick Start User Manual of IVC2L Series PLC
User Manual of IVC2L Series PLC
IVC2H series
Quick Start User Manual of IVC2H Series PLC
User Manual of IVC2H Series PLC
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