Rockwell-automation 900 Temperature Controller Communications Function Bedienungsanleitung PDF herunterladen (Seite 26)

Publication 900-UM004D-EN-E - July 2010

2-10 Bulletin 900 Communications Procedures 900-TCx (CompoWay/F)

Write to Variable Area

This service writes to the controller’s variable areas.

• Variable Type and Write Start address

For details on variable types and write start addresses, refer to Chapter 3,

Communications Data.

• Bit position

Bit accessing is not supported on the 900-TCx controller. Fixed to 00.

• Number of elements

Table 2.10

Number of Elements Process

0000 The write operation is not performed (do not

append write data to the service request PDU)

and processing ends in normal completion.

Double word 0001…0018 (1…24) The write operation is performed and processing

ends in a normal completion.

Word 0001…0030 (1…48)

Write Data

(for number of elements)

Number of elements x 8 or 4

Number of

Elements

Bit

Position

Write Start

Address

Variable

Type

002

MRC SRC

Service Request PDU:

Service Response PDU:

MRC SRC Response

Code

0 012

22 4

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 102 103

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Rockwell-automation 900 Temperature Controller Communications Function Bedienungsanleitung Seite 26