CN214335498U

CN214335498U - IO remote module capable of expanding load capacity

Info

Publication number: CN214335498U
Application number: CN202022896242.7U
Authority: CN
Inventors: 陈献
Original assignee: Ganzhou Jiarong Intelligent Technology Co ltd
Current assignee: Ganzhou Jiarong Intelligent Technology Co ltd
Priority date: 2020-12-05
Filing date: 2020-12-05
Publication date: 2021-10-01
Anticipated expiration: 2030-12-05

Abstract

The utility model relates to a long-range module field of IO provides a long-range module of IO that can expand tape load ability. Including central processing unit, central processing unit is connected with power module and supplies power, central processing unit is connected with opto-coupler isolation module I and opto-coupler isolation module II, opto-coupler isolation module I has RS485 interface module through RS485 bus connection, RS485 interface module is connected with a plurality of IO units, opto-coupler isolation module II has CAN transceiver through CAN bus connection, CAN transceiver is connected with a plurality of IO units, central processing unit still has I through the I unit²The C bus is connected with an extended communication unit and an extended communication unitThe power module is connected with a plurality of IO units, the power module is also connected with and supplies power to the RS485 interface module, the CAN transceiver and the extension communication unit, the RS485 interface module, the CAN transceiver and the extension communication unit are connected with the station number setting unit, and address distribution is carried out by the station number setting unit. The utility model discloses have multiple bus interface mode, can effectively expand the area load capacity of IO module.

Description

IO remote module capable of expanding load capacity

Technical Field

The utility model relates to a long-range module field of IO, in particular to can expand long-range module of IO of loading ability.

Background

As the demand for control systems in industrial fields is gradually subdivided, the conventional centralized control systems have been unable to meet the requirements for controlling field devices at relatively large distances. The proposal of the remote IO technology provides possibility for solving the problems, the remote IO is the IO which is centralized and placed compared with the traditional, the IO module is decentralized, namely the IO remote module is arranged near the field device and is connected with the main controller through a communication cable, the field data is collected and the control command is transmitted, and the proposal of the IO remote module makes up the defect that the existing centralized and placed control system can not control the remote device.

The upper computer may be far from the remote IO module, an RS485 bus is usually adopted to transmit signals, and some control systems with higher automation degree adopt an industrial Ethernet to control the remote IO module. For the occasions where a plurality of sensors and a plurality of controlled devices need to be arranged, the number of IO interfaces of the upper computer is limited, so that the number of the loaded remote IO modules is limited, and how to effectively expand the loading capacity of the upper computer is very important.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can expand the IO remote module of loading ability, the limited problem of loading ability of the limited loading ability of mainly used solution host computer IO interface quantity.

The above technical problem of the present invention can be solved by the following technical solutions: including central processing unit, central processing unit is connected with the pilot lamp circuit, central processing unit is connected with power module and supplies power, central processing unit is connected with opto-coupler isolation module I and opto-coupler isolation module II, opto-coupler isolation module I has RS485 interface module through RS485 bus connection, RS485 interface module is connected with a plurality of IO units, opto-coupler isolation module II has the CAN transceiver through CAN bus connection, the CAN transceiver is connected with a plurality of IO units, central processing unit still has the IO unit through I²The C bus is connected with an extension communication unit, the extension communication unit is connected with a plurality of IO units, the power module is further connected with and supplies power to the RS485 interface module, the CAN transceiver and the extension communication unit, the RS485 interface module, the CAN transceiver and the extension communication unit are connected to a station numberAnd the setting unit is used for carrying out address allocation through the station number setting unit.

Preferably, the central processor is connected to a plurality of DI/DO interface circuits, and is connected to the field devices through the DI/DO interface circuits to transmit and receive analog commands and data.

The utility model has the advantages that: the system has multiple bus interface modes, can effectively expand the loading capacity of the IO module, and can flexibly control the loading capacity of the IO remote module by increasing or decreasing the number of the expansion communication units.

Drawings

Fig. 1 is a schematic structural view of the present invention;

the notation in the figure is:

1. the system comprises a central processing unit, 2. an extended communication unit, 3. a power supply module, 4. an optical coupling isolation module I, 5. an RS485 interface module, 6. an RS485 bus, 7. an optical coupling isolation module II, 8. a CAN transceiver, 9. a CAN bus, 10.I²C bus, 11 station number setting unit, 12 IO unit, 13 indicator lamp circuit and 14 DI/DO interface circuit.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): the long-range module of IO that CAN expand area load ability of this embodiment, as shown in fig. 1, including central processing unit 1, central processing unit 1 is connected with indicator circuit 13, central processing unit 1 is connected with power module 3 and supplies power, central processing unit 1 is connected with opto-coupler isolation module I4 and opto-coupler isolation module II 7, opto-coupler isolation module I4 is connected with RS485 interface module 5 through RS485 bus 6, RS485 interface module 5 is connected with a plurality of IO units 12, opto-coupler isolation module II 7 is connected with CAN transceiver 8 through CAN bus 9, CAN transceiver 8 is connected with a plurality of IO units 12, central processing unit 1 still is through I bus 9²The C bus 10 is connected with an extension communication unit 2, the extension communication unit 2 is connected with a plurality of IO units 12, the power module 3 is further connected with and supplies power to the RS485 interface module 5, the CAN transceiver 8 and the extension communication unit 2, and the RS485 interface module 5, the CAN transceiver 8 and the extension communication unit 2 are all connected to the station number settingAnd a unit 11 for performing address allocation by the station number setting unit 11.

The central processor 1 is connected to a plurality of DI/DO interface circuits 14, and is connected to the field devices through the DI/DO interface circuits 14 to transmit and receive analog commands and data.

The central processing unit 1 selects an STM32F103RBT6 chip, and the power supply module 3 selects an LM2576 power supply control chip.

The IO unit 12 is connected to various industrial sensors as an input/output terminal to collect data. The IO unit 12 may also be used as an input/output terminal to connect to various controlled devices, and the industrial PC outputs control signals to each IO unit 12 through the central processing unit 1, thereby implementing control of the controlled devices.

The number of the extension communication units 2 can be more than one, and the extension communication units can be flexibly increased and decreased according to field requirements. In order to facilitate the association of the control signal with each expansion communication unit 2 or with the association between the RS485 interface module 5 and the CAN transceiver 8 by the central processing unit 1, the addresses of the expansion communication unit 2, the RS485 interface module 5, and the CAN transceiver 8 are set by the station number setting unit 11 in this embodiment, so that the central processing unit 1 CAN process the data uploaded by each bus in order.

The present embodiment is only an exemplary embodiment of the present invention, and for those skilled in the art, based on the application method and principle disclosed in the present invention, various modifications or variations can be easily made, and not only limited to the structure described in the above embodiments of the present invention, therefore, the manner described in the foregoing is only a preferred embodiment, but not limiting, and all equivalent changes and modifications made according to the present invention are within the scope of the present invention.

Claims

1. The utility model provides a can expand long-range module of IO of area load ability, includes central processing unit (1), central processing unit (1) is connected with indicator lamp circuit (13), central processing unit (1) is connected with power module (3) and supplies power, its characterized in that, central processing unit (1) is connected with opto-isolator module I (4) and opto-isolator module II (7), the module of carrying load is carried out to the opto-isolator, the module of carrying load is carried out to the opto-coupler, and the module is carried to the central processing unit (1) and is carried out the power, and is carried out the load, and is carried the module, and is carried the load, and is carried the module to the module, and is carried to the module, and is carried to be carried to the module, and is carried to be connected with the centralOptical coupling isolation module I (4) is connected with RS485 interface module (5) through RS485 bus (6), RS485 interface module (5) are connected with a plurality of IO units (12), optical coupling isolation module II (7) are connected with CAN transceiver (8) through CAN bus (9), CAN transceiver (8) are connected with a plurality of IO units (12), central processing unit (1) is still through I²C bus (10) is connected with extension communication unit (2), extension communication unit (2) are connected with a plurality of IO unit (12), power module (3) still connect and supply power in RS485 interface module (5) with CAN transceiver (8) with extension communication unit (2), RS485 interface module (5) with CAN transceiver (8) with extension communication unit (2) all connect in station number setting unit (11), through station number setting unit (11) carry out address allocation.

2. The IO remote module capable of expanding the load capacity of claim 1, wherein a plurality of DI/DO interface circuits (14) are connected to the central processing unit (1), and the DI/DO interface circuits (14) are connected to the field devices.