Schneider Automation Modicon Quantum Ethernet Uživatelský manuál stáhnout pdf (Strana 201)

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101

Transferring Data with the I/O Scanner

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I/O Scanner

Parameters

The I/O Scanner parameters are described in the following table:

Elsewhere in this guide is information about I/O scan response times for high-

performance communications modules (see I/O Scanner Response Times: Remote

Input to Remote Output, p. 210).

Using the I/O

Scanner with an

IP Router

Parameter Value

Max. No. of Devices 64: 140 NOE 771 00 (Version 2.2 or earlier)

128: 140 NOE 771 00 (Version 3.0 or later), 140 NOE 771

01, and 140 NOE 771 11 only

128: 140 CPU 651 x0

Max. No. of Input Words 4000

Max. No. of Output Words 4000

Health Timeout Value User configured: 1...65535 ms in 1 ms increments

Last Value (Input) User configured (Zero or Hold)

IP Address User configured

IP address of scanned device (Slave IP)

Local and Remote Register

Reference

User configured

Repetitive Rate User configured: 0...65535 ms in multiples of:

z 16 ms, for 140 NOE 771 xx

z 10 ms, for 140 CPU 651 xx

Unit ID User configured

Configure ID only if using a bridge

Operation through a bridge Modbus bridge: Supported

Modbus Plus bridge: Supported

Note: The I/O Scanners in the NOE 771 x1 modules and 140 CPU 651 x0 send

out requests with a Time To Live (TTL) of 10, which allows passage through

multiple routers.

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