Consecutive Equipment Addresses, Gap Span | Schneider Electric S7

SIMATIC S7 Ethernet

Consecutive Equipment Addresses

Overview

The following table lists the maximum number of consecutive addresses that can be read by each PLC. Refer to this table when using block transfers.

Note:

zTo speed up data communication, use consecutive variable addresses on the same panel screen.

zThe following situations increase the number of times that the equipment is read, which reduces the data communication speed between the target machine and the equipment:

z when the number of consecutive addresses exceeds the maximum z when different device types are used.

	Device	Max. Consecutive Addresses		Gap Span


		Read	Write
	Input (I)
	Output (Q)
	Internal Bit (M)
	Data Block (DBX)	218 bytes	212 bytes	218 bytes
	Input (IW)	218 bytes	212 bytes	218 bytes
	Input (IW)
	Output (QW)
	Internal Bit (MW)
	Data Block (DBW)
	Timer Word (T)		1 word	—
	Counter Word (C)		1 word	—
	Counter Word (C)

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Schneider Electric S7 manual Consecutive Equipment Addresses, Gap Span

Contents

Siemens AG Page Table of Contents Page Important Information Safety Information Please Note Validity Note About the BookAt a Glance Document Scope User Comments Product Related Information Simatic S7 Ethernet Subject of this ChapterWhats in this Chapter? System Structure OverviewConnection Simatic S7 Ethernet Fetch/Write Supported Device Addresses S7-300/400 Series S7-200 Series Gap Span Consecutive Equipment Addresses Screen example of I/O Manager Configuration Manager Configuration S7-200 Series Screen Description Equipment Configuration Fetch Fetch/Write Screen Description S7-300/400 Series Screen Description Screen example of Device Address Configuration Device Address Configuration Keypad Simatic S7 Ethernet