Rockwell-automation 20-COMM-ER 20-COMM-ER Dual-Port EtherNet/IP Commun Instrukcja Użytkownika Pobierz pdf (Strona 110)

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

Chapter 6 Using Explicit Messaging

ControlLogix Controller Example Ladder Logic Program to Write a Single

Parameter, RSLogix 5000 Software, Version 15.00 or Later

A Parameter Write message is used to write to a single parameter. This write

message example writes a value to parameter 140 - [Accel Time 1] in a PowerFlex

7-Class drive.

Table 19 - Example Controller Tags to Write a Single Parameter

Figure 37 - Example Ladder Logic to Write a Single Parameter

Important:If the explicit message single write must be written

continuously, use DPI Parameter Object Class code 0x93. This

writes to RAM—not NVS (EEPROM) memory. This example

single write message using Class code F writes to NVS. Over

time, continuous writes will exceed the EEPROM life cycle and

cause the drive to malfunction.

ControlLogix Controller – Formatting a Message to Write a Single Parameter,

RSLogix 5000 Software, Version 15.00 or Later

Figure 38 - Parameter Write Single Message Configuration Screens

Operand Controller Tags for Single Write Message Data Type

XIC Execute_Single_Write_Message BOOL

MSG Single_Write_Message MESSAGE

1 2 ... 105 106 107 108 109 110 111 112 113 114 115 ... 237 238

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Rockwell-automation 20-COMM-ER 20-COMM-ER Dual-Port EtherNet/IP Commun Instrukcja Użytkownika Strona 110