Siemens SIMATIC Distributed I/O System DP/ASi Link Specifiche Scaricare il pdf (Pagina 37)

Getting Started

2-11

Distributed I/O Device ET 200M

EWA-4NEB780600602-06

2.10 Diagnostics

1. If a fault occurs, the OB 82 is started. Evaluate the start information in the

OB 82.

Tip: Call SFC 13 within OB 82 and evaluate the diagnostic frame. (See

Section 6.3)

SM 321: Short Circuit of Sensor Power Supply to M

1. Open the front door of the DI module and use a wire to short-circuit the sensor

power supply Vs (terminal 10) to M (terminal 20).

2. Watch the status LEDs.

IM 153-2:

– SF: lights up

SM 321; DI 16 x 24 V DC:

– SF: lights up ⇒ Diagnostic message has been issued

– Vs: does not light up (terminal 10)

3. Evaluate the diagnostic message.

Result:

– Station status 1: Byte x.3 is set ⇒ External

diagnostics

– Module diagnosis: Byte (x+7).3 is set ⇒ Slot 4

– Channel-specific diagnosis:

Byte (x+16).0 to (x+16).5: 000011

⇒ Slot 4

Byte (x+17).0 to (x+17).5: not relevant

Byte (x+18).0 to (x+18).4: 00001

⇒ Short circuit

4. Remove the wire between terminal 10 and terminal 20.

Evaluate the diagnostic LEDs again.

IM 153-2:

– SF: Off

SM 321; DI 16 x 24 V DC:

– SF: Off

– Vs: lights up (terminal 10)

The diagnostic message is erased.

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 239 240

Nessun commento

Siemens SIMATIC Distributed I/O System DP/ASi Link Specifiche Pagina 37