Rockwell-automation 20-COMM-ER 20-COMM-ER Dual-Port EtherNet/IP Commun Uživatelský manuál stáhnout pdf (Strana 139)

Rockwell Automation Publication 20COMM-UM015B-EN-P - July 2013 139

Using Explicit Messaging Chapter 6

Figure 73 - Example Ladder Logic to Write Multiple Parameters

Important:If the explicit message scattered write must be written

continuously, then use a separate Generic Set service explicit

message single write for each parameter using DPI Parameter

Object Class code 0x93 and attribute A (10 decimal; see

page 133

). Attribute A writes to RAM—not NVS (EEPROM)

memory. This example scattered write message using attribute 0

writes to NVS. Over time, continuous writes will exceed the

EEPROM life cycle and cause the drive to malfunction.

MicroLogix 1100/1400 Controller – Formatting a Message to Write Multiple

Parameters Using Generic Get/Set Attribute Service

Figure 74 - Custom Scattered Write Multiple Message Configuration Screens

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