Rockwell-automation 900 Temperature Controller Communications Function Manual do Utilizador descarregar pdf (Página 32)

Publication 900-UM004D-EN-E - July 2010

2-16 Bulletin 900 Communications Procedures 900-TCx (CompoWay/F)

Read Controller Status

This service reads the operating and error status of the controller.

Service Request PDU

Service Response PDU

MRC SRC

0 061

2 2

MRC SRC Response

Code

Run

Status

Informa-

tion

22 4 22

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 102 103

Functions 1
Important User Information 2
European Communities (EC) 3
Directive Compliance 3
Table of Contents 5
-ii Table of Contents 6
Safety Precautions 7
Conventions Used in This 7
How to Read Display Symbols 8
About Communications Methods 9
Communications 10
Specifications 10
Transmission procedure 10
Interface 11
Communications Parameter 14
Communication Parameters 15
Setting Communications 16
900-TCx (CompoWay/F) 17
Response Frame 18
Communications Data 19
Example of End Code 19
Structure of Command Text 21
Type Code (Variable Type) 22
Addresses 22
Number of Elements 23
List of Services 23
Detailed Description of 24
Services 24
Response code 25
Write to Variable Area 26
Bit Position 28
Response Code 28
Read Controller Attributes 31
Read Controller Status 32
Echoback Test 33
Test data 34
Operation Commands 35
Response Code List 42
3-2 Communications Data 44
Communications Data 3-3 45
3-4 Communications Data 46
Communications Data 3-5 47
3-6 Communications Data 48
Communications Data 3-7 49
3-8 Communications Data 50
Communications Data 3-9 51
3-10 Communications Data 52
Communications Data 3-11 53
3-12 Communications Data 54
Status Structure 55
Bit position 56
Table 3.4 Status Details 57
Table 3.5 Status 2 Contents 58
Data Format 59
CRC-16 Calculation Example 60
Error Codes 62
Function List 63
Variable Area 64
Detailed Description of the 66
Write Variable Area 69
Example Command and Response 72
Write variable address 73
Command: 75
Response: 75
Variable Area (Setting 83
Range) List 83
Advanced 84
Setting 84
Table 5.6 89
Four-byte mode Two-byte mode 89
Figure 5.1 Status Structure 96
Figure 5.3 Status 2 Structure 97
Table 5.11 Status Details 98
Table 5.12 Status 2 Details 99
Back Cover 103

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