Advanced Configuration Features

The HMI Blocks in the Island Data Image

Summary

An HMI panel that communicates using the Modbus protocol can be connected to

 

the CFG port (See The CFG Interface, p. 33) on the NIM. Using the Advantys

 

configuration software, you can reserve one or two blocks of registers in the data

 

image (See A Modbus View of the Island’s Data Image, p. 165) to support HMI data

 

exchange. When an HMI panel writes to one of these blocks, that data is accessible

 

to the fieldbus master (as inputs). Data written by the fieldbus master (as outputs) is

 

stored in a different reserved block of registers that the HMI panel can read.

 

 

HMI Panel

Advantys STB supports the ability of an HMI panel to act as:

Configuration

an input device, which writes data to the island’s data image that is read by the

 

fieldbus master

 

an output device, which can read data written by the fieldbus master to the

 

￿island’s data image

 

a combined I/O device

HMI Input Data Input data to the fieldbus master can be generated by the HMI panel. Input controls

Exchange on an HMI panel might be elements such as: push buttons

￿switches

a data entry keypad

To use an HMI panel as an input device on the island, you need to enable the HMI- to-fieldbus master block in the island’s data image (See The Data Image, p. 166) and specify the number of registers in this block that you want to use for HMI-to- fieldbus master data transfers. You must use the Advantys configuration software to make these configuration adjustments.

The HMI-to-fieldbus master block can comprise up to 512 registers, ranging from register 49488 to 49999. (Your actual register limit will be dictated by your fieldbus.) This block follows immediately after the standard input data and I/O status process image (See Input Data and I/O Status Process Image, p. 169) block (registers 45392 through 49487) in the island’s data image.

The HMI panel writes the input data to a specified number of registers in the HMI- to-fieldbus master block. The NIM manages the transfer of the HMI data in these registers as part of the overall input data transfer—it converts the 16-bit register data to a fieldbus-specific data format and transfers it together with the standard input data and I/O status process image to the fieldbus. The fieldbus master sees and responds to HMI data as if it were standard input data.

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Schneider Electric 890USE17700 manual HMI Blocks in the Island Data Image, HMI Panel
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890USE17700 specifications

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