CN203786511U

CN203786511U - Module for increasing capability of PLC expansion module

Info

Publication number: CN203786511U
Application number: CN201420192146.6U
Authority: CN
Inventors: 罗宏
Original assignee: Hua Mao Oute Science-Technology Co Ltd Of Shenzhen
Current assignee: Hua Mao Oute Science-Technology Co Ltd Of Shenzhen
Priority date: 2014-04-21
Filing date: 2014-04-21
Publication date: 2014-08-20
Anticipated expiration: 2024-04-21

Abstract

The utility model discloses a module for increasing capability of a PLC expansion module. The module for increasing the capability of the PLC expansion module comprises a CPU. An output end of the CPU is connected with more than one module. An IM265 module is connected between the modules. An MCU module is included in the IM265 module, and is connected with a CPLD module through an FSMC parallel port method. An FSMC_IF module, a Bus_200 module, a ProApp module and an S200_bus module are included in the CPLD module. The module for increasing the capability of the PLC expansion module easily expands IO capacity on a Siemens S7200 system, is low in cost of a total solution, and is convenient for a user to use by calling and providing the user with one library function. Therefore, on the basis of a conventional system, the module for increasing the capability of the PLC expansion module can easily expand IO module quantity of the S7200 system, thereby satisfying a requirement of higher application and a requirement of connecting fourteen modules or more.

Description

A kind of module that increases PLC expansion module ability

Technical field

The utility model relates to a kind of module of the PLC of increasing expansion module ability, belongs to industrial automation PLC(Programmable Logic Controller) industry.

Background technology

Siemens S7 200 is in the widespread use of Chinese industrial control field, but its CPU can only expand at most 7 IO modules.If in some occasion, need to expand more IO module, that just needs the larger more expensive system of transducer set.

Commercial Application scene, the IO capacity (digital quantity input channel number, output channel number and analog input channel number, output channel number) that has a lot of occasions to use is larger.Siemens S7 200 systems are simple and easy to use because of it, and reliability is high, cost is low and be subject to widespread use.But the IO capacity of this system is little, so restricted in a lot of application scenarios.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of on the basis of its original system, can expand easily the IO module number of S7 200 systems, thereby meet the requirement of higher application, can connect 14 modules or the module of the increase PLC expansion module ability of multimode more.

The utility model is achieved through the following technical solutions: a kind of module that increases PLC expansion module ability, comprise CPU, the output terminal of described CPU connects an above module, between described module and module, be connected to an IM265 module, described IM265 module, in described IM265 module, comprise a MCU module, described MCU module connects a CPLD module by FSMC parallel port mode, comprises a FSMC_IF module, Bus200 module, ProApp module and S200_bus module in described CPLD module.

As preferred technical scheme, bus before the front end of described CPLD module connects.

As preferred technical scheme, the output terminal of described CPLD module connects the rear bus of expansion.

As preferred technical scheme, described CPLD module connects a block RAM, preserves IO data.

The S200_bus module of CPLD inside modules realizes the function of the main website of a CPU expansion bus, the module data of rear bus is read to this locality or local data is write on rear expansion module.

Bus200 module is the agreement of a digital module of imitative Siemens mainly.The protocol data of CPU transmits based on this digital module agreement, and all IO module datas of expanding below all will transmit through this agreement.

ProApp module is mainly to expand a set of application protocol on bus200 underlying protocol basis, makes CPU can read and write the RAM data space of this module, and is not only to read DI or write DO instruction function so less.

MCU is responsible for the modules in configuration or management CPLD module.

FSMC_IF module is responsible for the sequential processing of the exchange of MCU and CPLD inside modules data.

The beneficial effects of the utility model are: the utility model is expanded easily IO capacity in Siemens S7 200 systems, overall solution cost is low, user is easy to use, only need to call offer him a built-in function just, on the basis of its original system, can expand easily the IO module number of S7 200 systems, thereby meet the requirement of higher application, can connect 14 modules or more.

Brief description of the drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is total system block scheme of the present utility model;

Fig. 2 is the system block diagram of IM265 module in Fig. 1.

Embodiment

Disclosed all features in this instructions, or step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.

Disclosed arbitrary feature in this instructions (comprising any accessory claim, summary and accompanying drawing), unless narration especially all can be replaced by other equivalences or the alternative features with similar object.,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.

As depicted in figs. 1 and 2, a kind of module that increases PLC expansion module ability of the present utility model, comprise CPU, the output terminal of described CPU connects an above module, between described module and module, be connected to an IM265 module, described IM265 module, comprises a MCU module in described IM265 module, described MCU module connects a CPLD module by FSMC parallel port mode, comprises a FSMC_IF module, Bus200 module, ProApp module and S200_bus module in described CPLD module.

As preferred embodiment, bus before the front end of CPLD module connects.

As preferred embodiment, the output terminal of CPLD module connects the rear bus of expansion.

As preferred embodiment, CPLD module connects a block RAM, preserves IO data.

Wherein, the S200_bus module of CPLD inside modules realizes the function of the main website of a CPU expansion bus, the module data of rear bus is read to this locality or local data is write on rear expansion module.

Wherein, the mainly agreement of a digital module of imitative Siemens of Bus200 module.The protocol data of CPU transmits based on this digital module agreement, and all IO module datas of expanding below all will transmit through this agreement.

Wherein, ProApp module is mainly to expand a set of application protocol on bus200 underlying protocol basis, makes CPU can read and write the RAM data space of this module, and is not only to read DI or write DO instruction function so less.

Wherein, MCU is responsible for the modules in configuration or management CPLD module.

Wherein, FSMC_IF module is responsible for the sequential processing of the exchange of MCU and CPLD inside modules data.

The above, be only embodiment of the present utility model, but protection domain of the present utility model is not limited to this, and any variation of expecting without creative work or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims were limited.

Claims

1. one kind increases the module of PLC expansion module ability, it is characterized in that: comprise CPU, the output terminal of described CPU connects an above module, between described module and module, be connected to an IM265 module, described IM265 module, in described IM265 module, comprise a MCU module, described MCU module connects a CPLD module by FSMC parallel port mode, comprises a FSMC_IF module, Bus200 module, ProApp module and S200_bus module in described CPLD module.

2. the module of increase PLC expansion module ability according to claim 1, is characterized in that: bus before the front end of described CPLD module connects.

3. the module of increase PLC expansion module ability according to claim 1, is characterized in that: the output terminal of described CPLD module connects the rear bus of expansion.

4. the module of increase PLC expansion module ability according to claim 1, is characterized in that: described CPLD module connects a block RAM, preserves IO data.