Inficon LDS3000 Modular Leak Detector Interface descriptio Instrukcja Użytkownika Pobierz pdf (Strona 50)

50 Fieldbus Communication

Information The PROFIBUS-DP protocol is subject to change. If you are using this

protocol, please ask INFICON for an update.

6.3.2 Read Process Data (Leak Detector PLC)

This data is sent periodically from the leak detector to the programmable logic cont-

roller:

Gas ballast

Transition 0 -> 1: 0x01 = Gasballast on

Transition 1 -> 0: 0x00 = Gasballast off (if

Gasballast mode != GASBALLAST_ON)

Gasballast

Zero mode

0=normal

0x04 = 1 ... 2 dec.

0x08 = 2 ... 3 dec.

0x0C = 19/20 part of the value

CAL mode

0 = external CAL

0x10 = dyn. CAL

0x20…0x30 = not used

Select dyn/

norm

Sniff/Vac

0=Vacuum

0x40 = Sniff

0x80 = according to PLC-Input

0xC0 = not used

Sniff

*CONFIG:M

ODE

401

Byte Bit Name Meaning

Similar to

PLC Output

Similar to

RS232 ASCII

cmd.

Similar to

RS232 LD

cmd.

0 (not used) always 1

1 Zero active

0=off

0x02 = on

ZERO active

*STATUS:ZE

RO?

2Error

0=no error

0x04 = error

Error

Status

word

3 Warning

0=no warning

0x08 = warning

Warning

Status

word

State

internal

calibration

0=inactive

0x10 = active

0x20/0x30 = not used

CAL active

*STATUS:C

AL?

260

State

external

calibration

0=inactive

1 = 0x40 = active

2 = 0x80 = waiting for test leak closed

3 = 0xC0 = not used

CAL active

*STATUS:C

AL?

260

1 2 ... 45 46 47 48 49 50 51 52 53 54 55 56

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