Rockwell-automation 1771-SPI,D17716.5.122 SPI PROTOCOL INTERFACE Manual de usuario descargar pdf (Pagina 52)

Interpreting Diagnostic Information

In LEDs and Error Codes

Chapter 5

5-2

Use this Flow Chart to Troubleshoot Your SPI Network

Locate the SPI module in the I/O chassis and observe its LED indicators.

Use the following flow charts to troubleshoot the cause of the fault:

Are process actuals

being read from the device,

and are setpoints accepted

by the device?

Yes

SPI communication is OK.

Observe the SPI module's LEDs.

MODULE

CHANNEL

MODULE

FAULT

ACTIVE

OFF

or Flashing

Do you observe:

Yes

MODULE

CHANNEL

MODULE

FAULT

ACTIVE

OFF

Flashing

Do you observe:

Yes

Go to A

OFF

MODULE

CHANNEL

MODULE

FAULT

ACTIVE

Flashing

Do you observe:

Yes

any

MODULE

CHANNEL

MODULE

FAULT

ACTIVE

or Flashing

Do you observe:

Yes

Go to B

Flashing

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 61 62

SPI Protocol Interface Module 1
Cat. No. 1771SPI 1
Important User Information 2
Table of Contents 3
Table of Contentsii 4
Using This Manual 5
Overview of an SPI 7
Communication Network 7
Role of the 8
Host PLC5 Processor 8
Files That You Map in the 8
Data Table 8
Overview of the Data 9
Chapter 1 10
How the SPI Module 11
Communicates With Its 11
Network Devices 11
Many Different Devices 12
Can the SPI Network 12
Definition of Terms 13
Objective 15
Required Information from 15
Chapter 2 16
Communication Rate 16
Data Types and Data Codes 17
Wiring the SPI Network 20
Objectives 23
Command and Status 23
Module Configuration 24
Command Block (MCC) 24
Chapter 3 25
System Status Block (SYS) 26
Custom Configuration 28
Block (CCB) 28
Custom Data Block (CDB) 30
Status (CCS) 32
Custom Data Status (CDS) 34
CDS Resulting from CDB 35
Summary of SPI 36
Block Acronyms 36
Device T 36
Match Your Application 37
Command Block, MCC, to 38
Configure the SPI Module 38
Chapter 4 39
MCC Worksheet 39
Custom Configuration Block 40
CCB, to Configure the SPI 40
Module for a Device 40
CCB Worksheet 41
Custom Data Block, CDB, to 44
Transfer Data to the Device 44
CDB Worksheet 45
System Status Block, SYS 48
Status, CCS, to Return 49
Configuration Status From 49
Custom Data Status, CDS, to 50
Return Device Status From 50
Troubleshooting with 51
Diagnostic Indicators 51
Chapter 5 52
Using Diagnostic 55
Error Codes 55
CCB Bit/Word Map 57
Error Codes Returned in CDS 58
Customer Support 61
Worldwide representation 62

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