3 semantics – INFICON PSG55x ATM to Medium Vacuum Gauge (DeviceNet) User Manual

Page 16

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tira58e1-a (2012-03) PxG5xx.cp


The device configuration string is composed (separated by blanks) depending on
the bits set in the DeviceConfig:

Description

Bit

Abbr.

Setpoints

4

0 / 1 = without / with setpoints

SP

Potential separation

5

0 / 1 = without / with potential separation

PS

Tungsten filament

6

0 = tungsten

WO

Nickel filament

1 = nickel

NI

Atmosphere sensor

7

0 / 1 = without / with atmosphere sensor

ATM

Display

8

0 / 1 = without / with display

DIS

DeviceNet

9

0 / 1 = without / with DeviceNet

DN

Profibus

10

0 / 1 = without / with Profibus

PB

Capacitance Diaphragm sensor

15

0 / 1 = without / with CDG

CDG

Analog out

16

0: U = 6.143 +1.286 × log10(p) [0 … 10 V] AO0

Analog out

17

1: U = 5.5 + log10(p) [1 … 9 V]

AO1

Analog out

18

3: U = 5.875 + log10(p) [1.57 … 9.05 V]

AO3

Heat Transfer (Pirani) vacuum sensor

20

0 / 1 = without / with Pirani

PIR


Example for the return value of Device Configuration:

"P WO ATM DIS DN CDG AO0 PIR"

This attribute represents the current state of the device. Its value changes as the
state of the device changes. The following values are defined:

Attribute value

State

0 Undefined
1 Self

testing

2 Idle
3 Self-test

exception

4 Executing
5 Abort
6 Critical

fault

In case of a self-test exception restart the device with a reset out of the box
(identity object class 1, instance 1, service 5, service target value: 1).

A single byte attribute whose value indicates the status of the alarms and warnings
for the device. The device supports the expanded mode.
For the expanded mode, bit seven of exception status attribute is set to one;
exceptions are reported through the communication of this exception status at-
tribute, formatted as specified in the table below. In addition, the exception detail
attributes are supported. The exception status bits are determined by a logical
"OR" of the related exception detail bits, as indicated.

Bit Function

0

ALARM / device-common

1)

1

ALARM / device-specific

2

ALARM / manufacturer-specific

3

reserved, set to 0

4

WARNING / device-common

1)

5

WARNING / device-specific

6

WARNING / manufacturer-specific

7

1

Expanded Method

1)

The alarm or warning is not specific to the device type or device type manufacturer.

4.3.3 Semantics

Device configuration (ID 10)

Device status (ID 11)

Exception status (ID 12)

Exception status bitmap

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