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1. Overview

P D P 3 2 . 0 M A N U A L

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Diagnosis

Diagnosis and behavior in case of error

The PROFIBUS module provides detailed diagnosis information about the status of the connected device, its own status and

the status of the PROFIBUS connection. Diagnosis information is shown with the locally available lamps and via the standard

PROFIBUS services.

Local Diagnosis PDP32

Diagnosis information is locally shown with LEDs (Light Emitting Diodes) Bus and DD located on the front side of the

PROFIBUS module. The meaning of the LED status is as follows:

LED Bus (red, green)

Off

Green flashing

Red flashing

Red

Green

Amber flashing

PROFIBUS Diagnosis

• Standard Diagnosis: The format of the standard diagnosis data is defined within the PROFIBUS standards (IEC 61158). It

consists of 6 octets that cannot be influenced by the field device manufacturer. The diagnosis information is related to the

communication layer and covers run-up diagnosis scenarios such as the device identification, communication mode infor-

mation (FREEZE, SYNC), readiness, availabilities, watchdogs, parameterization and configuration faults.

For details, see IEC 61158-6, 6.2.3.1 to 6.2.3.5. Bit 7 in octet 3 (the "Ext_Diag_Overfl ow" flag) is used by the PROFIBUS com-

munication interface to indicate more diagnosis information then fits into the actual diagnosis message length.

• Extended Diagnosis: PROFIBUS module offers extended diagnosis to make the diagnosis data of the connected devices

available to the PROFIBUS master. Depending on the selected diagnosis format DP-V1 or DP-V0, the content of the diagno-

sis is slightly different. The extended diagnosis telegram has the following format:

Byte in the extended

diagnosis telegram

LED DD (red, green)

Off

Amber flashing

Green flashing

Green

Red flashing

Red

Meaning DP-V0

Block length: 10 = 10 Bytes

Communication status communication

interface - UMC:

Value(0) ="Communication OK"

Value(1) ="Lost Communication to UMC100"

Diagnosis Byte 0 UMC (see UMC manual)

Diagnosis Byte 1 UMC (see UMC manual)

Diagnosis Byte 2 UMC (see UMC manual)

Diagnosis Byte 3 UMC (see UMC manual)

Diagnosis Byte 4 UMC (see UMC manual)

Diagnosis Byte 5 UMC (see UMC manual)

Diagnosis Byte 6 UMC (see UMC manual)

Diagnosis Byte 7 UMC (see UMC manual)

Meaning

Power Supply missing

- Connection to master missing

- Bus address of UMC different form the one configured in the

master

- I/O size mismatch between device and master

Parameter mismatch between device and master

Communication lost, supervision timeout time exceeded

OK, normal data exchange

Initializing

Waiting for communication from UMC

OK, normal data exchange

Connection to UMC lost

Internal fault. Replace communication interface.

Meaning DP-V1

Block length: 13 = 13 Bytes

Status type (always 0x81 = Status Mode)

Slot number (always zero)

Status specifi er (always zero)

Communication status communication interface - UMC: