INFICON HPG400-SD User Manual

Communication Protocol

DeviceNet™

Interface for Bayard-Alpert / Pirani Gauge and High Pressure / Pirani Gauge

BPG400-SD HPG400-SD

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Intended Use of this Document

This Communication protocol contains instructions for operating the vacuum gauges BPG400-SD and HPG400-SD (featuring DeviceNet interfaces) as slaves together with a DeviceNet master.

This manual describes the functionality of DeviceNet for programming purposes. For more information refer to the "DeviceNet specifications" of the Open DeviceNet Vendor Association (ODVA) (→  [2]) and the corresponding european standard (→  [3]).

For specifications and operation instructions of the vacuum gauges refer to the appropriate documents:

BPG400-SD →  [1], [4], [5], [6] HPG400-SD →  [1], [7], [8], [9]

DeviceNet Interface

Abbreviations

The following description of the DeviceNet Interface is compliant to the DeviceNet specification of the Open DeviceNet Vendor Association.

This manual describes the functionality of a DeviceNet Group 2 Only Slave and supports Explicit Messaging and the I/O Polling.

We reserve the right to make technical changes without prior notice.

Abbr. Meaning

NV Nonvolatile; attribute value is maintained through power cycles

V Volatile

INT Integer value (Range –32767 … 32768)

UINT Unsigned integer value (Range 0 … 65635)

USINT Unsigned character value (Range 0 … 255)

FLOAT Floating point value (Range according to IEEE 754)

Hexadecimal number (Radix = 16)

Decimal number (Radix = 10)

Binary number (Radix = 2)

Trademarks

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DeviceNet™ Open DeviceNet Vendor Association Inc.

Contents

Intended Use of this Document 2 DeviceNet Interface 2 Abbreviations 2 Trademarks 2

1 Starting-Up of the Slave 4

1.1 Power Supply Requirements 4

1.2 Front View of the BPG400-SD and HPG400-SD 4

1.3 Connectors on the Device 5

1.4 Side View of the BPG400-SD and HPG400-SD 6

1.5 Indicators and Switches 6

1.5.1 Module Status LED 6

1.5.2 Network Status LED 7

1.5.3 Node Address Switch 7

1.5.4 Data Rate Switch 7

1.5.5 Setpoint 7

2 Object Structure 8

2.1 Connection Object 8

2.1.1 Vendor-Specific Object Extension on Instance 2 Poll Connection 8

2.2 Identity Object 9

2.2.1 Class Attributes 9

2.2.2 Instance Attributes 9

2.3 S-Device Supervisor Object 9

2.3.1 Class Attributes 9

2.3.2 Instance Attributes 10

2.3.2.1 Semantics 11

2.3.3 S-Device Supervisor Object States 16

2.3.4 S-Device Supervisor Common Services 16

2.3.5 S-Device Supervisor Object Specific Services 17

2.4 S-Analog Sensor Object 17

2.4.1 Class Attributes 17

2.4.2 Instance Attributes 18

2.4.2.1 Instance Attributes of Instance 1 Pirani Instance 18

2.4.2.2 Semantics of S-Analog Sensor Instance 1 19

2.4.2.3 Instance Attributes of Instance 2 Hot Cathode Ion Gauge 21

2.4.2.4 Semantics of S-Analog Sensor Instance 2 22

2.4.2.5 Instance Attributes of Instance 21 / Setpoint A (Instance 22 / Setpoint B) 23

2.4.3 Common Services 24

2.4.4 Object-Specific Services on Instance 1 / Pirani 24

2.4.5 Object-Specific Services on Instance 2 / Hot Cathode Ion Gauge

(Only BPG400-SD) 25

2.4.6 Behavior 25

3 I/O Assembly Object 27

3.1 I/O Assembly Instances 27

3.2 I/O Assembly Object Instance Data Attribute Format 28

Appendix 29

A: Range of Values 29 B: Specific Codes 29 C: Conversion of a Floating Number According to IEEE 754 29 D: Typical Start-Up Procedure 30 E: Literature 33

For cross-references within this document, the symbol (→  XY) is used, for crossreferences to further documents listed under literature, the symbol (→  [Z]).

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1 Starting-Up of the Slave

1.1 Power Supply Requirements

1.2 Front View of the BPG400-SD and HPG400-SD

The BPG400-SD / HPG400-SD has to be powered with two voltages:

1.) 24 Volt DC, 18 W at the 15 pole Sub-D connector for the gauge itself;

2.) 24 Volt DC nominal, <2 W range 11 … 25 V) at the DeviceNet micro style connector for the DeviceNet transceiver.

Position Function

1 Address Switch × 10, decimal

2 Address Switch × 1, decimal

3 DeviceNet connector

4 Data Rate Switch

5 Network Status LED

6 Module Status LED

7 "Sensor cable" connector

(Power, analog I/O, RS232C I/O and Relay contacts)

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1.3 Connectors on the Device

The BPG400-SD / HPG400-SD uses a "Sealed Micro-Style Connector" for the DeviceNet connection. The DeviceNet part of the gauge is powered via the DeviceNet connector.

Pin Assignment of the Sealed Micro-Style Connector

Pin Assignment of the 15-pin D-Sub connector

Pin Function

1 Drain

V+ nominal 24 V (range 11 … 25 V)

3V–

4 CAN_H

5 CAN_L

Pin Function

1 Setpoint A, Relay Common

2 Pressure Output (Signal Output 0 … +10 V)

3 Threshold Setpoint A (Output 0 … +10 V)

4 Setpoint A, Relay, n.o. contact

5 Supply sensor electronics common

6 Threshold Setpoint B (Output 0 … +10 V)

7 Degas Input , High Active (only BPG400-SD)

8 Supply sensor electronics +24 Volt

9 Setpoint B, Relay Common

10 Gauge identification

11 Setpoint B, Relay, n.o. contact

12 Signal common GND

13 RS232, TxD

14 RS232, RxD

15 Housing, shielding, GND

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1.4 Side View of the BPG400-SD and HPG400-SD

BPG400-SD

HPG400-SD

1.5 Indicators and Switches

1.5.1 Module Status LED

Position Function

8 Potentiometer for Setpoint A threshold

9 Potentiometer for Setpoint B threshold

10 Fullscale adjustment push button

12 Hot cathode sensor calibration adjustment (only

Device State LED State Description

Power Off Dark No power applied to device.

Device Self-Test Flashing

Device Operational Green Device is operating normally.

Unrecoverable Fault

Emission On threshold adjustment (marked P↔HP, only HPG400-SD)

HPG400-SD)

Green-Red

Red Device has detected an unrecoverable fault.

Device is in self-test.

As stated previously, all module level faults are considered as unrecoverable faults.

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1.5.2 Network Status LED

1.5.3 Node Address

Switch

1.5.4 Data Rate Switch

1.5.5 Setpoint

The network status LED indicates the status of the DeviceNet communication link.

For this state LED state To indicate

Not Powered/Not Online Dark Device is not online.

• The device has not completed the

Duplicate MAC_ID test yet.

• The device may not be powered,

look at Module Status LED.

On–line, Not Connected Flashing

green

Device is online but has no connections in the established state.

• The device has passed the

Dup_MAC_ID test, is online, but has no established connections to other nodes.

• The device is not allocated to a

master.

Link OK Online, Connected Green The device is online and has connec-

tions in the established state.

• The device is allocated to a Master.

Connection Time Out Flashing

red

One or more I/O Connections are in the timed out state.

Critical Link Failure Red Failed communication device. The

device has detected an error that has rendered it incapable of communicating on the network (Duplicate MAC ID, or Bus–off).

During device initialization, the node address switches are read by the device firmware. If the switches specify a valid DeviceNet MAC ID, i.e. a value from 0 … 63, this value is used as the device MAC ID. If the specified MAC ID differs from the value stored in the device’s non-volatile RAM (NVRAM), the new MAC ID will be saved in NVRAM. If the switches specify an invalid DeviceNet MAC ID, i.e. a value greater than 63, the current value stored in the device’s NVRAM is used as the device MAC ID.

A single, rotary switch is provided for configuring the data rate of the device. The switch has three valid positions for the DeviceNet data rates, 125, 250, and 500 kbaud, where the position 1 is equal to 125 kbaud, 2 equal 250 kbaud and 5 equal 500 kbaud. All remaining switch positions specify software selection of the data rate.

The device has two setpoint relays (Setpoint A and Setpoint B). The setpoints of these relays are adjustable only by two potentiometers (marked SETPOINT A and SETPOINT B).

The relay contacts are available at the 15-pin D-Sub connector.

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2 Object Structure

2.1 Connection Object

Class Code 05h = 05

The connection class allocates and manages the internal resources associated with both I/O and explicit messaging connections. The specific instance generated by the connection class is referred to as a connection instance or a connection object.

The following Instances of the connection object are supported:

• Instance 1: Explicit Messaging

• Instance 2: I/O-Polling

Please refer to the DeviceNet specification for further information.

2.1.1 Vendor-Specific Object Extension on Instance 2 Poll Connection

AttributeIDRequirement in

Implementation

100 Optional Get/Set NV Poll Produce

Access

Rule

NV/V Name DeviceNet

For the selection of the active input assembly the following vendor specific attribute can be used.

Vendor specific extension:

Assembly Instance

Description of Attribute Semantics

Data Type

USINT Contains the Instance num-

ber of the assembly used by this connection to send data

1, 2, 4, 5, 8, 9, 10, 12, 13

This vendor-specific attribute facilitates the configuration of the data assembly, sent by the BPG400-SD / HPG400-SD to the DeviceNet Master as Poll response. It offers the possibility to select a (predefined) data assembly via a configuration tool + EDS file →  [1]. Attribute 100 allows the user to configure the Poll I/O Data Assembly via EDS even when the Poll Connection of the BPG400-SD / HPG400-SD is in the established state. The Assembly Number is stored non volatile. Modifications of the Poll Produce Assembly Instance will take effect only after a reset of the BPG400-SD / HPG400-SD.

Thus, definition of the BPG400-SD / HPG400-SD data assembly can be done in two ways:

1) Standard methode (without using attribute 100): The DeviceNet Master configures the "Produced Connection Path” Attribute of the Poll connection (Connection Instance 2) when establishing communication to the BPG400-SD / HPG400-SD. This requires a Master to support expanded explicit messaging capabilities.

2) Directly setting Attribute 100 e.g. by a configuration tool (e.g. RS Networks) + Device Reset.

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2.2 Identity Object

Class Code 01h = 01

2.2.1 Class Attributes

Attribute ID Access Rule Name DeviceNet

1 Get Revision UINT Revision of this object.

2 Get Max Instance UINT Maximum instance number of

This object provides identification of and general information about the device.

Description of Attribute Semantics of Values

Data Type

The current value assigned to this Note: All class definitions are required to include this class attribute.

an object currently created in this class level of the device.

attribute is one (01). If updates that

require an increase in this value are

made, then the value of this attribute

increases by one.

The largest Instance number of a

created object at this class hierarchy

level.

2.2.2 Instance Attributes

Attribute ID Access Rule NV/VName DeviceNet Data Type Description of Attribute

1 Get NV Vendor ID UINT 79 02 Manufacturer identification

Value: 633 (INFICON)

2 Get NV Device Type UINT 1Ch = Vacuum pressure gauge

3 Get NV Product Code UINT for example: 9

4 Get NV Revision STRUCT

5 Get NV Status WORD

6 Get NV Serial Number UDINT

7 Get NV Product Name SHORT STRING for example: BPG400-SD

Services

2.3 S-Device Supervisor

Service Code Name Description

5 (05h) Reset 0 = last installation,

1 = default installation

14 (0Eh) Get_Attribute_Single

Class Code 30h = 48

Object

2.3.1 Class Attributes

Attribute ID Access

Rule

1 Get Revision UINT Revision of this object The current value assigned to this at-

2 Get Max

Name DeviceNet

Data Type

UINT Maximum instance number of an

Instance

Description of Attribute Semantics of Values

tribute is one (01). If updates that require an increase in this value are made, then the value of this attribute increases by one.

The largest Instance number of a creobject currently created in this class level of the device.

ated object at this class hierarchy level.

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2.3.2 Instance Attributes

Attribute ID Access Rule NV/VName DeviceNet Data Type Description of Attribute

3 Get NV DeviceType SHORT STRING ASCII Text, "CG" combination gauge

4 Get NV SEMI Standard

Revision Level

5 Get NV Manufacturer’s Name SHORT STRING "INFICON"

6 Get NV Manufacturer’s Model

Number

7 Get NV Software Revision

Level

8 Get NV Hardware Revision

Level

9 Get NV Manufacturer’s Serial

Number

10 Get NV Device Configuration SHORT STRING Depending on device configuration

11 Get V Device Status USINT

12 Get V Exception Status BYTE

13 Get V

Exception Detail Alarm

Common Exception Detail

Size 2 USINT Number of common detail bytes

Detail 0 ARRAY of:

Detail 1 BYTE

Device Exception Detail

Size 4 USINT Number of device detail bytes

Detail 0 ARRAY of:

Detail 1 BYTE

Detail 2 S-Analog Sensor Instance 2

Detail 3 S-Analog Sensor Instance 2

Manufacturer Exception Detail

Size 1 USINT Number of Manufacturer detail bytes

Detail 0 ARRAY of: Serial communication alarm

SHORT STRING Specifies the revision level of the SEMI

S/A network standard to which the device complies (for example "E54-0997").

SHORT STRING for example: BPG400-SD

SHORT STRING ASCII Text, for example "xxxyyy"

xxx

version of the measuring print

yyy

version of the DeviceNet print

SHORT STRING ASCII text, for example "1.001"

SHORT STRING ASCII text

(→ Appendix B)

→ "Semantics" section below. → "Semantics" section below.

STRUCT of: A structure of three structures containing

a bit mapped representation of the alarm detail

STRUCT of:

→ "Semantics" section below. → "Semantics" section below.

STRUCT of:

S-Analog Sensor Instance 1 (Pirani) Sensor alarm byte 0

(Hot cathode) Sensor Alarm byte 0

(Hot cathode) Sensor alarm byte 1

STRUCT of:

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Attribute ID Access Rule NV/VName DeviceNet Data Type Description of Attribute

14 Get V

Exception Detail

STRUCT of: A structure of three structures containing

Warning

Common Exception

STRUCT of:

Detail

Size 2 USINT Number of Common Detail Bytes

Detail 0 ARRAY of:

Detail 1 BYTE

Device Exception

STRUCT of:

Detail

Size 6 USINT Number of Device Detail Bytes

Detail 0 ARRAY of:

Detail 1 BYTE

Detail 2 BYTE

Detail 3 S-Analog Sensor Instance 2

Detail 4 S-Analog Sensor Instance 2

Detail 5 S-Analog Sensor Instance 2

Manufacturer

STRUCT of:

Exception Detail

Size 1 USINT Number of Manufacturer Detail Bytes

Detail 0 Byte serial common warning

15 Set NV Alarm Enable BOOL

16 Set NV Warning Enable BOOL

101 Get NV Sensitivity USINT

102 Get NV Emission On

INT or REAL

Threshold

a bit mapped representation of the warning detail

→ "Semantics" section below. → "Semantics" section below.

S-Analog Sensor Instance 1 (Pirani) Status Extension

S-Analog Sensor Instance 1 (Pirani) Sensor Warning Byte 0

S-Analog Sensor Instance 1 (Pirani) Sensor Warning Byte 1

(hot cathode) Status Extension

(hot cathode) Sensor Warning Byte 0

(hot cathode) Sensor Warning Byte 1

→ "Semantics" section below. → "Semantics" section below. → "Semantics" section below.

only HPG400-SD

→ "Semantics" section below.

only HPG400-SD

2.3.2.1 Semantics

Device Status

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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).

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