User guide

EtherNet I/P Objects

C-29

C.10 MDI Diagnostic Object

Class Code

Instances

The number of instances depends on the maximum number of

diagnostic items in the device. The total number of diagnostic items

can be read in Instance 0, Attribute 2.

Class Attributes

Hexadecimal Decimal

0x99 153

Instances (Dec.) Single-Drive Mode Multi-Drive Mode

0 - 16383 Instances 0 - 16383 in the drive Instances 0 - 16383 in the drive

16384 - 17407 Instances 0 - 1023 in the module Instances 0 - 1023 in the module

17408 - 18431 Instances 0 - 1023 in the module Instances 0 - 1023 in Drive 1

18432 - 19455 Instances 0 - 1023 in the slave Instances 0 - 1023 in Drive 2

19456 - 20479 Not supported Instances 0 - 1023 in Drive 3

20480 - 21503 Not supported Instances 0 - 1023 in Drive 4

21504 - 22527 Not supported Instances 0 - 1023 in the module

Attribute

Access

Rule Name Data Type Description

1 Get Class Revision WORD 1

2 Get Number of

Instances

WORD Number of diagnostic items in the

device

3 Get ENUM Offset WORD MDI ENUM object instance offset