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15 semantics of s-analog sensor instance 1 – INFICON PSG55x ATM to Medium Vacuum Gauge (DeviceNet) User Manual

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tira58e1-a (2012-03) PxG5xx.cp

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Attribute

ID

Access rule NV/

V

Name

DeviceNet
data type

Description of attribute

Semantics of values

96 Get

V

Status
extension

Byte

Bit-mapped byte providing
additional status bits of an
S-Analog sensor instance.

default = 0
→ "Semantics" section below

99

Get

V Subclass

UINT

Identifies a subset of addi-
tional instance attributes,
services and behaviors.

2 = Heat Transfer Vacuum Gauge

101 Set

NV

Pirani

OFF

Cmd

USINT

Flag to switch off the Pirani
in a dangerous
environment

0 = Pirani is always on;
1 = Pirani switches off at 120% of
s32CombineUpperLimit;
2 = Pirani is always off

If the Pirani is switched off, the meas-
urement part (wheatstone bridge) is
not powered and the instance outputs
it’s “Safe State” value

In this case the Status extension is
also set to “Reading Invalid”

102 Set

NV

Pirani
Adjust Hv
Pressure

INT or speci-
fied by data
type

Target value for the high
vacuum (hv) adjustment

<1E-4mbar = standard hv adjustment,
other values = adjustment to this
value




→ Instance 1 PCG55x

→ Instance 1 PCG55x

→ Instance 1 PCG55x

→ Instance 1 PCG55x

→ Instance 1 PCG55x

16 bits are used as sensor warnings.

Data component

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Sensor warning byte 0

0 0 0 0 0 0 0 0

Sensor warning byte 1

0 0 0 0 0 0

Electronics

Warning

0

16 bits are used as sensor faults.

Data component

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Sensor alarm byte 0

0 0 0 0 0 0 0

Sensor

Element

Failure

Sensor alarm byte 1

0 0 0 0 0 0

Electronics

Failure

0

8 bits providing the current sensor alarm state of the instance

Data component

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Sensor alarm byte 0

0 0 0 0 0

Underrange

exceeded

Overrange

exceeded

Reading
invalid

1)

1)

Logical inversion of reading valid


4.4.3.15 Semantics of S-Analog

Sensor Instance 1

Data type

Data units

Value

Safe state

Safe value

Sensor warning

Sensor alarm

Status extension

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