Idec Micro Register Block Tag

Help Contents

Introduction

The Idec Micro Register Block Tag Register Block Tag Icon specifies a region of Idec Micro PLC memory and how often to read the data from the PLC.

Configuration Properties

The Idec Micro Register Block Tag supports the configuration properties of the Byte Register Block Tag plus these properties:

Property Type Version Description
ScanInterval TIME 2.1 The interval between each scan. See Interval and Offset for information on how timed activities are scheduled.
ScanOffset TIME 2.1 The offset added to the ScanInterval to get the actual scan time. See Interval and Offset for information on how timed activities are scheduled.
Device Reference 2.1 The Idec Micro PLC Tag where the register block is located.
DataAddress STRING 2.1 The data address of the first byte of the register block.
See Idec Micro PLC Data Address Format for information on how this field is formatted. Click the Browse button Browse button to access the memory address editor.
ByteCount UINT 2.1 The number of bytes to read.

ByteCount Property

The Idec Micro protocol defines maximum limits for the number of bytes that can be read in a single read request. When the ByteCount property exceeds these limits, the driver will use multiple read requests to read all of the data.

Tag Commands

The Idec Micro Register Block Tag supports these tag commands:

Tag Command Version Description
Refresh 2.1 Requests an immediate read of the data from the PLC.

Note: Event triggered data reads (from the Refresh tag command) and periodic data reads (defined by the ScanInterval property) are independent. You can use the Refresh tag command, or the ScanInterval property, or both to determine when the data is read from the PLC.

Relationships to Other Tag Types

The Idec Micro Register Block Tag builds on the features of these tag types:

Further Information

Interval and Offset

To learn how activities are scheduled using Interval and Offset.

Idec Micro PLC Data Address Format

To learn how to specify a data location in an Idec Micro PLC.

I/O Analog Data Point Tag

To learn about the I/O Analog Data Point Tag that can be associated with the Idec Micro Register Block Tag.

I/O Digital Data Point Tag

To learn about the I/O Digital Data Point Tag that can be associated with the Idec Micro Register Block Tag.

I/O Word Data Point Tag

To learn about the I/O Word Data Point Tag that can be associated with the Idec Micro Register Block Tag.

I/O Double Word Data Point Tag

To learn about the I/O Double Word Data Point Tag that can be associated with the Idec Micro Register Block Tag.

Idec Micro Driver

For an overview of the Idec Micro Driver.

Byte Register Block Tag

To learn about properties common to all Byte Register Block Tags.

Glossary

For the meaning of terms used in Fernhill SCADA.