Rockwell-automation 20G PowerFlex 755 Drive Embedded EtherNet/IP Adapt Uživatelský manuál stáhnout pdf (Strana 103)

Rockwell Automation Publication 750COM-UM001E-EN-P - October 2013 103

Using Explicit Messaging Chapter 6

ControlLogix Controller Example Scattered Write Request Data

In this message example, we use the data structure in Figure 30 in the source tag

(Scattered_Write_Request) to write new values to these 32-bit REAL (floating

point) parameters:

See DPI Parameter Object

on page 148 (Class code 0x93) or Host DPI

Parameter Object on page 162 (Class code 0x9F) for parameter numbering.

Figure 30

shows the parameter values which, in this example, have been

converted using a UDDT to correctly write their values. COP (Copy)

instructions could have been used for this purpose instead of a UDDT. If the

parameters being written to are 32-bit integers, do not COP the data to a REAL

tag.

Figure 30 - Example Scattered Write Request Converted Data

ControlLogix Controller Example Scattered Write Response Data

The results of the message appear in the destination tag named

Scattered_Write_Response (Figure 31

). Values of ‘0’ indicate no errors occurred.

Figure 31 - Example Scattered Write Response Data

PowerFlex 750-Series Drive Parameter Write Value

536 - [Accel Time 2] 11.1 Sec

538 - [Decel Time 2] 22.2 Sec

575 - [Preset Speed 5] 33.3 Hz

576 - [Preset Speed 6] 44.4 Hz

577 - [Preset Speed 7] 55.5 Hz

1 2 ... 98 99 100 101 102 103 104 105 106 107 108 ... 189 190

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Rockwell-automation 20G PowerFlex 755 Drive Embedded EtherNet/IP Adapt Uživatelský manuál Strana 103