Endress+Hauser Tankvision Multi Scan NXA83B Operating Instruction
Endress+Hauser Tankvision Multi Scan NXA83B is a powerful tool for inventory control and remote configuration of measuring equipment. It calculates observed or gross volumes, net volumes, mass, and available pumpable volumes based on measured variables and tank capacity tables, corrected according to international standards.
Iklan
Iklan
BA01296G/00/EN/05.21
71551409
2021-12-31
Valid as of software version:
5.0.0
Products Solutions
Operating Instructions
Tankvision
Multi Scan NXA83B
Redundancy manual
Services
2
Tankvision Multi Scan NXA83B
1.
Order code:
Ser. no.:
Ext. ord. cd.:
XXXXX-XXXXXX
XXXXXXXXXXXX
XXX.XXXX.XX
Serial number
2.
www.endress.com/deviceviewer
Endress+Hauser
Operations App
3.
Version history
Document version
BA01296/00/EN/01.14
BA01296/00/EN/02.15
BA01296/00/EN/03.16
BA01296/00/EN/04.18
BA01296/00/EN/05.21
Valid for SW version
3.0.10
3.0.12
3.1.0 and 4.0.0
3.4.0 and 4.4.0
5.0.0
A0023555
Changes to the previous version
Initial version
Change of order code structure
Old V1 support and simplified configuration
Changes to V1 Driver and GBT calculations
Migration to Windows 10 IoT operating system
Endress+Hauser
Tankvision Multi Scan NXA83B
Table of Contents
1 Document information . . . . . . . . . . . . . . 4
1.1 Target audience for this manual . . . . . . . . . . . . . . . 4
1.2 Document function . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Registered trademarks . . . . . . . . . . . . . . . . . . . . . . . 5
2 Basic safety instructions . . . . . . . . . . . . . 6
2.1 Requirements for the personnel . . . . . . . . . . . . . . . 6
2.2 IT security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Workplace safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.5 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.6 Product safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Introduction . . . . . . . . . . . . . . . . . . . . . . . 8
4 Switch By System . . . . . . . . . . . . . . . . . . . 9
4.1 Typical system architecture . . . . . . . . . . . . . . . . . . . 9
4.3 Port Latching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4 Boot Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.5 Slave interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.6 Mode display and control . . . . . . . . . . . . . . . . . . . 12
4.7 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Endress+Hauser 3
Document information Tankvision Multi Scan NXA83B
1 Document information
1.1
Target audience for this manual
This manual is giving detailed information on the system capabilities and architecture. It supports project and sales engineers in designing the system architecture during acquisition and execution phase. Furthermore during operation time of the system all servicing personnel in need of detailed knowledge about the system capabilities.
1.2
Document function
1.2.1
Symbols
Safety symbols
Symbol
DANGER
A0011189-EN
WARNING
A0011190-EN
CAUTION
Meaning
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in serious or fatal injury.
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in serious or fatal injury.
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in minor or medium injury.
A0011191-EN
NOTICE
A0011192-EN
NOTICE!
This symbol contains information on procedures and other facts which do not result in personal injury.
Symbols for certain types of information and graphics
Symbol Meaning
Tip
Indicates additional information.
A0011193
Reference to page
Refers to the corresponding page number.
A0011195
1.
, 2.
, ... Series of steps
Result of a sequence of actions
A0018373
4 Endress+Hauser
Tankvision Multi Scan NXA83B Document information
Symbols in graphics
Symbol
1, 2, 3 ...
Meaning
Item numbers
1.
, 2.
, ... Series of steps
A , B , C ...
-
A0011187
Views
Hazardous area
Indicates a hazardous area.
.
A0011188
Indicates a non-hazardous location
Safe area (non-hazardous area)
1.3
Documentation
The following documentation types are available in the Downloads area of the
Endress+Hauser website: www.endress.com/downloads
For an overview of the scope of the associated Technical Documentation, refer to the following:
• W@M Device Viewer: www.endress.com/deviceviewer - Enter the serial number from the nameplate
• Endress+Hauser Operations App : Enter the serial number from the nameplate or scan the matrix code on the nameplate
1.4
Registered trademarks
Microsoft ® , Windows ® and Internet Explorer ®
Registered trademarks of the Microsoft Corporation
Modbus™
Modbus is a registered trademark of Schneider Electric USA, Inc.
Java ®
Registered trademark of Sun Microsystems, Inc.
Mozilla ® Firefox ®
Registered trademark of the Mozilla Foundation
Enraf, Honeywell, Rosemount, Emerson, Saab, L&J, VAREC, GPE are registered trademarks and trademarks of these organizations and companies.
All other marks are property of their respective owners.
Endress+Hauser 5
Basic safety instructions
6
Tankvision Multi Scan NXA83B
2 Basic safety instructions
2.1
Requirements for the personnel
The personnel for installation, commissioning, diagnostics and maintenance must fulfil the following requirements:
• Trained, qualified specialists: must have a relevant qualification for this specific function and task
• Are authorized by the plant owner or operator
• Are familiar with federal or national regulations
• Before beginning work, the specialist staff must have read and understood the instructions in the Operating Instructions and supplementary documentation as well as in the certificates (depending on the application)
• Following instructions and basic conditions
The operating personnel must fulfil the following requirements:
• Being instructed and authorized according to the requirements of the task by the facility's owner operator
• Following the instructions in these Operating Instructions
2.2
IT security
We only provide a warranty if the device is installed and used as described in the Operating
Instructions. The device is equipped with security mechanisms to protect it against any inadvertent changes to the device settings.
IT security measures in line with operators' security standards and designed to provide additional protection for the device and device data transfer must be implemented by the operators themselves.
Endress+Hauser can provide support in performing this task.
2.3
Intended use
2.3.1
Applications
Inventory control
By using Tankvision Multi Scan to monitor the tank level and stored volume of valuable liquids remotely, owners or operators of tank farms or terminals for petroleum products and chemicals (liquids) can visualize the volume of the stored medium in real time. The data can be used to plan the inventory and distribution. The data can also be used to manage tank farm operations like pumping or transferring products. Tankvision has its unique concept using network technology. Without using proprietary software, the users can visualize and manage their valuable liquids stored in the tanks by a web browser. Tankvision Multi Scan is a flexible and cost effective solution due to its scalable architecture. The application coverage goes from small depots with only a few tanks up to refineries.
Inventory Calculations
Tankvision Multi Scan calculates based on measured variables and tank capacity tables:
• Observed or gross volumes
• Net volumes and
• Mass of products like
• Hydrocarbons,
Endress+Hauser
Tankvision Multi Scan NXA83B Basic safety instructions
• Liquefied gases,
• Asphalt.
They are corrected according to international standards, including API/ASTM tables 5A, 5B/
6, 53A, 53B/54, 23/24, LPG.
This includes temperature corrections at 15 °C, 60 °F and alternative temperatures.
Additionally, available pump able volumes and water volume are calculated.
Remote configuration of measuring equipment
Some on-site operations can be avoided using remote configuration of measuring equipment during commissioning or maintenance (the availability of this feature may depend on the system configuration).
Application areas
• Tank farms in refineries
• Ship loading terminals
• Marketing and distribution terminals
• Pipeline terminals
• Logistic terminals for tanks storing products like crude oils, refined white and black products, chemicals, LPG
2.4
Workplace safety
For work on and with the device:
• Wear the required personal protective equipment according to federal or national regulations.
• Switch off the supply voltage before connecting the device.
2.5
Operational safety
Risk of injury!
• Operate the device in proper technical condition and fail-safe condition only.
• The operator is responsible for interference-free operation of the device.
Conversions to the device
Unnauthorized modifications to the device are not permitted and can lead to unforeseeable dangers.
• Consult with Endress+Hauser if modifications are required.
Repair
To ensure continued operational safety and reliability:
• Carry out repairs on the device only if they are expressly permitted.
• Observe federal and national regulations pertaining to repair of an electrical device.
• Use original spare parts and accessories from Endress+Hauser only.
2.6
Product safety
This measuring device is designed in accordance with good engineering practice to meet state-of-the-art safety requirements, has been tested, and left the factory in a condition in which it is safe to operate. It meets general safety standards and legal requirements.
It also complies with the EC directives listed in the device-specific EC Declaration of
Conformity. Endress+Hauser confirms this by affixing the CE mark to the device.
Endress+Hauser 7
Introduction Tankvision Multi Scan NXA83B
3 Introduction
The Multi Scan NXA83B is a configurable system designed for tank gauging and tank inventory management systems.
Redundant operation with a pair of Multi Scan NXA83B linked together is supported, so that only one NXA83B will poll the gauges. The other Multi Scan NXA83B will automatically update its database with live data from the active Multi Scan NXA83B.
This mode of redundancy is called Switch By System and this document outlines the configuration and operation of the two Multi Scan NXA83B.
There are two other modes of redundancy, both of which operate on a single Multi Scan
NXA83B (i.e. not a redundant pair):
• Switch By Gauge : Gauges are configured with two ports (Primary and Backup) on the same Multi Scan NXA83B. If the Multi Scan NXA83B loses connection to a gauge on one port it will switch to poll the gauge from the other port. This is on an individual gauge basis, thus both Primary and Backup ports may be polling at the same time.
• Switch By Interface : This is similar the switch by Gauge, except that the Multi Scan
NXA83B will poll ALL gauges on only one port (i.e. Primary on startup). Only when communication to all gauges has failed on this port will the Multi Scan NXA83B switch to poll gauges from the other port. Thus the Primary and Backup ports will never poll at the same time.
This manual is solely concerned with the redundancy functionality, it is assumed that the user has read the Multi Scan NXA83B manuals and is familiar with configuring a Multi Scan
NXA83B database.
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Tankvision Multi Scan NXA83B Switch By System
4 Switch By System
4.1
Typical system architecture
The diagram below shows an example of Multi Scan NXA83B used in the typical, single system architecture.
1
2 3
4
5
10 8
6
9
7
A0046351
7
8
5
6
3
4
1
2
9
10
Tankvision Professional NXA85 Workstation
Ethernet/Serial
DCS/PLC (Distributed control system/Programmable logic controlled)
Tankvision Multi Scan NXA83B
Fieldbus protocol (Modbus, Sakura V1, Whessoe WM550)
Proservo
Promonitor
Prothermo
Tank Side Monitor
Micropilot
4.2
Tankvision Multi Scan in "Switch By System" redundancy mode
The diagram below shows an example of a pair of Multi Scan NXA83B used in the Switch By
System redundancy mode.
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Switch By System Tankvision Multi Scan NXA83B
1
3
2
4
4
3
10
8
5
6
9
7
A0046352
7
8
5
6
3
4
1
2
9
10
Tankvision Professional NXA85 Workstation
Ethernet
Tankvision Multi Scan NXA83B
Control link RS232
Fieldbus protocol
ProservoTomek po synchro pogadajmy na chwile
Promonitor
Prothermo
Tank Side Monitor
Micropilot
The two NXA83B have a number of field loops (2 Enraf BPM in this example) connected to both Multi Scan NXA83B.
There are also 2 Control links connected between the NXA83B, these are used to transfer data between the systems, one for each direction of data transfer.
In normal operation one Multi Scan NXA83B will be in Live Polling mode, that is, polling for all field data from the gauges. The other Multi Scan NXA83B will be in Redundant Link mode, and it will be getting data from the live Multi Scan NXA83B via one of the Control
Links.
Therefore both Multi Scan NXA83B will have live field data, which will be displayed on screen and be available on any slave (Modbus etc.) port or OPC connection. Slave ports may be configured to not reply on the passive system, to mimic functionality in older equipment such as the Datacon.
If one of the field ports on the live system does not receive a correctly formatted reply for longer than the timeout period (default 60 seconds), it will be marked as failed and initiate a switch. This will cause the Multi Scan NXA83B to stop polling all field ports and switch to
Redundant Link mode.
An event will be generated to inform the user that the system is now passive.
10 Endress+Hauser
Tankvision Multi Scan NXA83B Switch By System
NXA83_Alarm-Event-Viewer_Redundant-Mode-Switched-To-Passive
The second Multi Scan NXA83B will detect this change, switch to Live Polling mode and start to poll all the field ports for gauge data.
An event will be generated in the second Multi Scan NXA83B to inform the user that the system is now active and polling for gauge data.
NXA83_Alarm-Event-Viewer_Redundant-Mode-Switched-To-Active
During the switchover, no data will be lost and no gauging alarms will be raised in the Multi
Scan NXA83B or in any connected tank gauging software.
If, following the switch, the field port on the second Multi Scan NXA83B also fails to receive correctly formatted data then a No Reply From Gauge alarm will be generated for each gauge on that field port.
If at any time an individual gauge fails on a port (i.e. does not reply), but other gauges are returning valid data, the failed gauge will immediately be set to error and an alarm raised.
This will not trigger a switch.
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Switch By System
12
Tankvision Multi Scan NXA83B
4.3
Port Latching
If a port has failed on both Multi Scan NXA83B the system will "Latch" for that port. A
Latched port will not trigger redundancy mode switching. This state will remain until valid communications is restored to the port. If the second Multi Scan NXA83B is not connected or powered up, all ports will latch and no switching will occur.
Latching does not affect other ports, so if an unlatched port fails redundant mode switching will occur as normal.
4.4
Boot Up
Multi Scan NXA83B which are configured as "Switch by System" will initially boot up in
Redundant Link mode and check to see if there is a Multi Scan NXA83B in Live Polling Mode.
If a Multi Scan NXA83B in Redundant Link mode does not find a "Live" system within a timeout period it will switch to Live Polling mode. The timeout period contains a random element, so that if two Multi Scan NXA83B boot at exactly the same time, one should always switch to Live Polling before the other.
If there are no Control Link connections between the two systems both will eventually switch to Live Polling mode.
4.5
Slave interfaces
All slave interfaces (Modbus, Datacon etc) by default operate as normal when used on redundant Multi Scan NXA83B. They will reply to requests whether they are running on the
Live Polling or Passive system, as both systems have valid live data.
However there may be applications where the master system requires that only slave interfaces running on the Live Polling system reply to requests. For instance if both Multi
Scan NXA83B are multi-dropped on the same interface and have the same addresses etc.
In this case the Slave port should be configured with the Do Not Reply When Passive option ticked in the Port Config tool. See later section on Slave Port Configuration for details on
where this can be found, ä 17.
If this option is ticked then the slave interface will not reply to any requests if it is running on the Passive system.
4.6
Mode display and control
The current redundancy mode may be displayed via the Communications Monitor, which can be accessed from a remote control session or from the operator touch screen. For full details on accessing and using the Communications Monitor, refer to the DCC Communications
Configuration manual BA01292G.
The redundancy mode is normally automatically selected by the two Multi Scan NXA83B systems which between them will determine which system is Active and which is Passive. A
Multi Scan NXA83B will boot up in the Passive mode and only go Active if it detects that the other system is either not running or is in Passive mode as well.
However there may be times when the mode requires to be manually controlled, in which case this can be carried out using the Communications Monitor redundancy screen. It can be used to initiate a manual switchover or to set the two systems to never switch, for instance when some maintenance work is to be carried out.
When a Multi Scan NXA83B is rebooted it will always start in automatic (Dynamic) switchover mode.
Endress+Hauser
Tankvision Multi Scan NXA83B Switch By System
The redundancy state screen in the Communications Monitor can be displayed by clicking on the Redundancy button.
NXA83_Redundancy_001
The fields displayed on this screen will include the following:
• Redundancy Type – this shows the type of redundancy configured for this Multi Scan
NXA83B. It will also show the current switching mode if the redundancy is set to Switch
By System .
• System Polling State – this shows the current polling state, ACTIVE or PASSIVE . It will always show ACTIVE if the redundancy type is NOT Switch By System .
• Last Switch Time – the time that the last switchover occurred in a Switch By System redundant system. If the redundancy type is not Switch By System or a switchover has not occurred then this field will be blank.
• Last Fail Reason – If a switchover has occurred then this will indicate the cause and can be one of the following:
– Field Port Failed
– Manual command
– Control Port detected other system passive
– Control Port detected both systems active
If the redundancy type is not Switch By System or a switchover has not occurred then this field will be blank.
• Last Field Port Fail – this COM port number of the last field port to fail and trigger a redundant switchover.
The Command field allows a set of redundant actions to be selected.
Endress+Hauser
NXA83_Redundancy_002
The command action will not be carried out until the OK button is clicked and the
Redundancy Status screen is closed.
When initiating a manual switchover, the recommended procedure is to select the Set
System PASSIVE command on the system that is currently ACTIVE.
13
Switch By System Tankvision Multi Scan NXA83B
4.6.1
Single Tank Display
The current redundancy mode may also be displayed in the Single Tank displays on the local touchscreen. This is generally only recommended for firmware versions before v3.2.0/4.2.0.
For later versions use the Communications Monitor.
This screen shows the mode that the Tankvision Multi Scan is currently operating. The mode may also be manually controlled using this screen.
NXA83_Redundancy_003
14 Endress+Hauser
Tankvision Multi Scan NXA83B Switch By System
4.7
Configuration
4.7.1
Redundancy Control Port Configuration
The first step to configuring a redundant database on the Multi Scan NXA83B is to configure the redundancy mode. This is set using the Port Configuration module in the
Communications menu.
Click on the Host Comms tab, and set the Redundancy Settings to Switch By System .
NXA83_Port-Configuration_Host-Comms_Switch-By-System
The Configure button will now be enabled. Click this button to determine the method of connecting the control links between the two Multi Scan NXA83B.
Endress+Hauser
NXA83_Redundancy_004
There are five options to select from:
• COM ports 1 and 2 used for Control Ports : The Multi Scan NXA83B automatically configures the communications ports for redundancy. Ensure that COM 1 and COM 2 are
NOT selected as "In Use" as either Host or Slave ports. Connect a Serial Cross-over lead from
COM 1 on one Multi Scan NXA83B to COM 2 on the other for both Multi Scan NXA83B.
This is the recommended method of connecting the control links.
15
Switch By System Tankvision Multi Scan NXA83B
• COM ports 7 and 8 used for Control Ports : The Multi Scan NXA83B automatically configures the communications ports for redundancy. Ensure that COM 7 and COM 8 are
NOT selected as "In Use" as either Host or Slave ports. Connect a Serial Cross-over lead from
COM 7 on one Multi Scan NXA83B to COM 8 on the other for both Multi Scan NXA83B.
• Manual Selection of Control Ports : This option must be selected when the control ports have been manually configured. There must be two control ports configured:
– 1 DCC Host port configured as a Redundant Link Control protocol.
– 1 DCC Slave port configured as a Redundant Link Control protocol.
These can be either standard RS232 COM ports (recommended for manual configuration) or Network ports. The communication parameters should be set identically for both Multi
Scan NXA83B.
In operation the Host Redundant Link Control is connected to the Slave Redundant Link
Control of the other system, and vice-versa.
16
NXA83_Port-Configuration_Host-Comms
• Network used for Control Ports : The Multi Scan NXA83B automatically configures network ports for redundancy. The Network address of the second Multi Scan NXA83B must be supplied in the Network Address field. Both Multi Scan NXA83B must be connected to the same network, or have a Network Cross-over lead connected between the
Ethernet ports of the two Multi Scan NXA83B. Connection using a Network Cross-over lead is not a recommended method for Redundant Link since it prevents access to the
Multi Scan NXA83B operating system using a remote desktop connection.
• No Control Ports Used : If this option is selected both Multi Scan NXA83B will default to
Live polling mode. This option should NOT be used for Switch By System redundancy.
Endress+Hauser
Tankvision Multi Scan NXA83B Switch By System
4.7.2
Field Port and Slave Port Configuration
Next configure all field ports in the Host Comms page as normal, except that the redundancy operation may be modified for individual ports by editing the R edundancy Settings section of the COM port Settings dialog.
Endress+Hauser
NXA83_COM-Port-Settings
For Host ports the following settings may be adjusted:
• Do Not Trigger Redundant Switch : If ticked the port will not trigger a switchover if it fails
• Timeout Period : The time period for determining if the port has failed. If no replies are received from devices on the port for longer than this period a switchover will be triggered.
Defaults to 60 seconds.
For Slave ports the following setting may be adjusted:
• Do Not Reply When Passive : The port will not reply to any requests if it is running on the passive system.
4.7.3
Current Loop Board Configuration
When using Current Loop interface boards with redundant systems (such as when interfacing to Whessoe WM500/550 devices) the following should be implemented:
Set the Flow Control Field to Redundant .
17
Switch By System Tankvision Multi Scan NXA83B
Remove the Redundant Mode Control jumper from each board.
NXA83_COM-Port-Settings_Flow-Control_Redundant
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2
1
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1
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NXA83_Current-Loop-Board_Redundant-Mode-Control-jumper
Tx LED
Rx LED
Redundant Mode Control jumper (Fitted = Loop always powered; Not Fitted = Redundant Mode)
Loop Current Adjust
Master/Slave Select
Power Converters
Endress+Hauser
Tankvision Multi Scan NXA83B Switch By System
4.7.4
L&J Tankway Board Configuration
When using L&J interface boards with redundant systems the following should be implemented:
Set the Flow Control field to Redundant .
NXA83_COM-Port-Settings_Flow-Control_Redundant
Make sure LK1 is in the UP position (i.e. towards the Tx/Rx LEDs) on each board.
Endress+Hauser 19
Switch By System Tankvision Multi Scan NXA83B
4.7.5
Gauge Configuration
After the interfaces have been configured, the gauges must be configured for redundant operation.
To do this, select the gauge in the Gauge Configuration screen in the Configurator tools.
20
NXA83_Device-Configuration
Set the Comm Port field to be the field port (i.e. the port that the gauges are connected to).
There is no need to enter port a Backup COM Port field, so leave blank.
Firmware Versions before 3.0.6 do require the Backup COM Port field to be the Host
Redundant Link Control port. To display this field click on the Advanced button.
4.8
Configuring Tankvision Professional NXA85 to talk to a pair of redundant Multi Scan NXA83B
A PC running the Tankvision Professional NXA85 tank gauging software may be used on conjunction with a pair of redundant pair of Multi Scan NXA83B.
It must be connected to the Multi Scan NXA83B by one of the following:
• RS232, RS485 or RS422, using a pair of serial communication ports on the PC (one for each Multi Scan NXA83B).
• Ethernet, with the PC and both Multi Scan NXA83B connected via a switch or similar.
This section will give some notes on what to configure, but refer to the DCC Configuration manual (BA01292G) for more details on configuring Tankvision Professional NXA85.
4.8.1
Multi Scan NXA83B Configuration
Each Multi Scan NXA83B should be configured with a slave interface to communicate with the VTW, using the Datacon protocol. The screen shot shows it configured as a network interface.
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Tankvision Multi Scan NXA83B Switch By System
NXA83_Redundancy_005
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Switch By System Tankvision Multi Scan NXA83B
4.8.2
Tankvision Professional NXA85 Port Configuration
In the Tankvision Professional NXA85 system configure a pair of Host COM ports using the
Datacon protocol, one connected to each Multi Scan NXA83B. These may be either physical serial COM ports (COM 1 +) or network ports (COM 71 +).
Set the Redundancy settings mode to Switch By Gauge .
22
NXA83_DCC_Host-Comms_Switch-By-Gauge
If using network ports then ensure that the Network Address and Port fields are configured to match the Multi Scan NXA83B settings.
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Tankvision Multi Scan NXA83B Switch By System
4.8.3
Gauge Configuration
Gauges should be configured as normal in Tankvision Professional NXA85.
Endress+Hauser
NXA83_Device-Configuration_Common-Configuration
Ensure that the Data Collection Device index is set to correct index of the device in the
Multi Scan NXA83B. Alternatively it can be left as zero if the device name is exactly the same on Tankvision Professional NXA85 and Multi Scan NXA83B.
Set the Local COM Port and the Backup COM Port to the two interfaces configured for the datacon protocol
4.8.4
Tankvision Professional NXA85 Redundant Operation
Tankvision Professional NXA85 will attempt to poll for gauge data on the Local COM Port initially. If the data for the gauge is all invalid then it will switch individual gauges to poll on the backup COM Port. During the switch there will be no loss of data.
If the Multi Scan NXA83B initiate a redundant switchover then there should be no loss of data in Tankvision Professional NXA85 and assuming both Multi Scan NXA83B are still operational then Tankvision Professional NXA85 will not switch its ports.
If an interface port fails completely, for instance if the link between the PC and a Multi Scan
NXA83B is broken or the Multi Scan NXA83B loses power, then Tankvision Professional
NXA85 will switch all gauges to its other port. During the switch there will be no loss of data, but alarms will be generated.
If the interface port is via Ethernet (COM 71+) then the following alarms will be generated:
• DCC Comms Failure (60 seconds after failure)
• Device Disconnected (20 to 30 seconds after failure)
• Failed To Connect (5 to 10 seconds later)
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Switch By System Tankvision Multi Scan NXA83B
NXA83_Alarm-Event-Viewer_DCC-Comms-Failure
If the interface port is via a physical serial port then only the DCC Comms Failure will be generated.
4.8.5
Multi Scan NXA83B System Monitor
The Tankvision Professional NXA85 system can be configured to poll for diagnostic information from the Multi Scan NXA83B device itself. This is then used to generate events to notify the Tankvision Professional NXA85 user when a redundant switchover occurs on the Multi Scans NXA83B.
To enable this feature, configure System Monitor devices in the Tankvision Professional
NXA85, one for each Multi Scan NXA83B.
24
NXA83_Redundancy_006
The configuration fields that are relevant for this device type are as follows:
• Device Name – This should typically be configured as the Multi Scan NXA83B network name or to some text that can uniquely identify that Multi Scan NXA83B to the user.
Endress+Hauser
Tankvision Multi Scan NXA83B Switch By System
• Local COM Port – Enter the COM port that is used to communicate with the Multi Scan
NXA83B.
• Backup COM Port – Always set this field to ZERO.
• Data Collection Device index – Not required, leave as ZERO.
In operation the Tankvision Professional NXA85 system will poll the Multi Scan NXA83B directly for diagnostic data and generate an event when a redundant switchover occurs.
These will be one of the following:
• Remote System Switched To Passive
• Remote System Switched To Active
NXA83_Redundancy_007
Endress+Hauser 25
Tankvision Multi Scan NXA83B
Index
B
Boot Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
C
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Current Loop Board Configuration . . . . . . . . . . . . . . . . . 17
F
Field Port and Slave Port Configuration . . . . . . . . . . . . . 17
G
Gauge Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 20, 23
I
Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Intended use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
L
L&J Tankway Board Configuration . . . . . . . . . . . . . . . . . 19
M
Mode display and control . . . . . . . . . . . . . . . . . . . . . . . . . 12
Multi Scan NXA83B Configuration . . . . . . . . . . . . . . . . . 20
Multi Scan NXA83B System Monitor . . . . . . . . . . . . . . . 24
P
Port Latching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
R
Redundancy Control Port Configuration. . . . . . . . . . . . . 15
Redundancy mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
S
Safety icons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Single Tank Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Slave interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Switch By System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
T
Tankvision Professional NXA85 Port Configuration. . . 22
Tankvision Professional NXA85 Redundant Operation 23
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Typical system acchitecture . . . . . . . . . . . . . . . . . . . . . . . . . 9
26 Endress+Hauser
Tankvision Multi Scan NXA83B
Endress+Hauser 27
71551409
www.addresses.endress.com
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