Specifications

Fieldbus Communications Support

31004624 8/2009

Diagnostic Data

Introduction

This topic discusses the diagnostic and error data for the Advantys STB NIB 2212

INTERBUS NIM.

For a status word’s given selector value, the corresponding information is

transmitted in the word’s low byte.

NIM Status (Selector 00h)

When the selector value is 00, NIM status low byte information is transmitted as the

status word’s low byte value:

Bit Meaning of Value

D0 device failure

1 = any module on the island bus has failed

0 = no module failure

D1 internal failure

1 = any global diagnostic bit (except RESET) is set

0 = all global diagnostic bits are set to 0

D2 word length failure

1 = output or input data length exceeds its respective word limits

0 = output and input data lengths are within their respective word limits

D3 protected mode

1 = NIM in protected mode—RST button is disabled and the island configuration

requires a password to write to it

0 = NIM not in protected mode—RST button is enabled and the island configuration

is not password-protected

D4,

D5,

error code

0x00 = no error

0x01 = self-test failed—ID code does not match first initialization, power reset

required

0x02 = at least one global bit has been set

0x03 = expired request timer

0x04 = empty assembly list

0x05 = expired confirm timer

0x06 = wrong island bus state at initialization

0x07 = an error code higher than 0x07 (reserved)