CN104811341A - Network adapter automatic parameter configuration method - Google Patents

Abstract

The invention discloses a network adapter automatic parameter configuration method. The method includes 1, re-configuring network adapter GSD files; 2, configuring 2-stage network equipment by means of logic programs of a PLC and configured software; 3, allowing the PLC to control an intelligent IO controller of the 2-stage network directly; 4, allowing the network adapter to establish the specific correspondence of a polling mechanism and data address for the 2-stage network. By the aid of the method, long distance configuration can be performed, and maintenance is facilitated.

Description

A kind of network adapter parameter automatization collocation method

Technical field

The present invention relates to industrial control field, particularly a kind of network adapter parameter automatization collocation method.

Background technology

The world today, Industry Control controls to move towards centralized monitor, distribute control from unit.In the today entering cybertimes, industrial control unit (ICU) networking is also for network management provides conveniently.ModBus agreement is exactly the one in the procotol of industrial control unit (ICU).ModBus agreement is that Modicon company is in a kind of communications protocol of carrying out control and communication for electronic controller of invention in 1978.By this agreement, controller each other, controller can communicate via between network and miscellaneous equipment.Its opening, expandability and standardization make it become a current industry standard.Had it, the control appliance that different vendor produces can be linked to be industrial network simple and reliablely, carries out the centralized monitor of system, thus makes it become one of most popular agreement.The ASCII of ModBus, rtu protocol then defines the mode of message, the structure of data, order and response on this basis.The data communication of ModBus controller adopts Master/Slave mode (master/slave), and namely Master end sends data request information, and Slave termination just can send data to Master end with response request after receiving correct message; Master end also directly can send out the data of message modification Slave end, realizes two-way read-write.

And gateway product traditional at present, all adopt hierarchical design, use two-stage bus to scene all realize group-net communication, secondary bus: field control equipment chain product is communicated by the MODBUS-RTU corporate networks adapter of standard, one-level bus: network adapter adopts PROFIBUS-DP, communicates with PLC or DCS of other producers.

Under current pattern, under system, each network adapter must be arranged separately, and site environment lower network adapter is all place separately, apart from far, environmental condition is also bad, the interchangeability of each network adapter is also bad, therefore very inconvenient for on-site maintenance.

Summary of the invention

The object of the invention is the shortcoming and defect in order to overcome prior art, providing one to configure at a distance, and a kind of network adapter parameter automatization collocation method maintained easily.

The present invention is achieved by the following technical programs:

A kind of network adapter parameter automatization collocation method, comprises the following steps:

Step 1: the GSD file reconfiguring network adapter, this GSD file comprises the device definition of 2 grades of types of network equipments that network adapter and network adapter control;

Step 2: 2 grades of network equipments are configured by the programming in logic of PLC and the software of configuration;

Step 3:PLC is configured the parameter of network adapter and configuration by parameters service agreement, directly controls the intelligent I/O controller of 2 grades of networks;

Step 4: network adapter is configured according to this group parameter received, and generates corresponding MODBUS-RUT instruction, makes 2 grades of network equipments form concrete polling mechanism and the corresponding relation of data address.

Accompanying drawing explanation

Fig. 1 is the schematic flow sheet of this invention.

Embodiment

Below in conjunction with the drawings and specific embodiments, the invention will be further described.

As shown in Figure 1, a kind of network adapter parameter automatization collocation method, concrete steps are as follows:

Step 1: the GSD file reconfiguring network adapter, this GSD file comprises the device definition of 2 grades of types of network equipments that network adapter and network adapter control, and design parameter configuration is as follows:

Step 2: 2 grades of network equipments are configured by the programming in logic of PLC and the software of configuration;

Step 3:PLC is configured the parameter of network adapter and configuration by parameters service agreement, directly controls the intelligent I/O controller of 2 grades of networks;

Step 4: network adapter is configured according to this group parameter received, generate corresponding MODBUS-RUT instruction, 2 grades of network equipments are made to form concrete polling mechanism and the corresponding relation of data address, last 4 bytes (240-243) of 244 bytes of gateway read input data are as the whether online flag bit of 2 grades of network equipments, front 240 bytes are measured as equipment input, and the data structure of front 240 bytes is as follows:

Equipment 1

Equipment 2

...

Equipment n

Byte240

Byte241

Byte242

Byte243

DI,AI

DI,AI

...

DI,AI

Equipment 7-0 state

Equipment 15-8 state

Equipment 23-16 state

Equipment 31-24 state

Claims (1)

1. a network adapter parameter automatization collocation method, is characterized in that, comprises the following steps:

Step 1: the GSD file reconfiguring network adapter, this GSD file comprises the device definition of 2 grades of types of network equipments that network adapter and network adapter control;

Step 2: 2 grades of network equipments are configured by the programming in logic of PLC and the software of configuration;

Step 3:PLC is configured the parameter of network adapter and configuration by parameters service agreement, directly controls the intelligent I/O controller of 2 grades of networks;

Step 4: network adapter is configured according to this group parameter received, and generates corresponding MODBUS-RUT instruction, makes 2 grades of network equipments form concrete polling mechanism and the corresponding relation of data address.