Emerson Process Management MSL600 manual Security, On-line/Off-line

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Installation, Operation & Maintenance Manual

IP262/Z0, Rev. AB

February 2012

MSL600

4.4 Security

The HMI includes a password system which may be used to protect parameters from unauthorised changes and also to prevent the system from being switched between On and Off-line mode.

The password is in the form of a 4-digit code (or PIN). When the user has entered the correct PIN then the password is said to be open (else closed). The PIN is a 4-digit code, value 0000 to 9999.

Once the password is open then all parameters may be edited.

A PIN of 0000 means that the password is disabled, i.e. no password is required to edit parameters.

Examining the PIN locally shows “- - - -” unless set to 0000.

When prompting for entering of PIN, the display shows “- - - -”.

A PIN is set or entered by scrolling each of the 4 digits using the ￿ and ￿ arrows to select the digit and ￿ and ￿ arrows to select the value for each digit.

No PIN is required to navigate the menus or to simply examine parameter values.

Attempting to change a parameter value prompts for the entering of the PIN (if it is not already open). If the parameter affects outputs, and if On-line, then after entering the PIN the user is offered go Off-line.

If the password is open then the main menu offers the option “Cancel Password” as the default (highest priority) option. Closing the password does not affect the On line/Off-line status.

The password is automatically closed after 5 minutes without any key press; this does not affect the On line/Off-line status.

4.5 On-line/Off-line

This feature allows the MSL600 outputs, i.e. its relays and current output to be frozen. Also, when On-line, the editing of all parameters which may affect these outputs is inhibited.

Off-line inhibits relays and current output.

On-line inhibits the editing of all parameters that may affect the outputs. These include relay, current output and alarm parameters.

The On line/Off-line state is shown by the padlock symbol at the top left-hand corner of the HMI display (padlock closed represents On-line).

Go On line/Off-line by selecting the appropriate item in the main menu. As the mode is toggled, a large image of the Padlock symbol opens and closes. Attempting to edit any parameter can only be performed with the unit Off-line.

If the system password is closed then the system will prompt for a password, once correctly entered then it changes as requested.

NOTE: There is no time-out on On-line or Off-line.

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Contents MSL600 Installation, Operation & Maintenance ManualContents MSL600 12.2 12.1Before Operating this Device the Manual should be Read Fully About this Manual About the MSL600Mounting bracket Important MSL600 featuresSelf-cleaning Human Machine InterfaceLocation As a systemCircular clarifiers Application planningRotating bridge Static bridge Rectangular clarifiersMounting bracket attachment InstallationPreliminary checks LocationAttaching the MSL600 Installing the bracket on the bridgeMSL600 mounting Transducer connections Power and other electrical connectionsExternal connection terminals Cable extension Display ProgrammingKeypad and Menu Navigation Contrast viewing angle controlOn-line/Off-line SecurityTank depth Bottom reference Quick start parametersDetermination of tank depth Transducer self-cleaningMA current output parameters Current output adjustRelay parameters AlarmTransducer out-of-water time Digital input Menu Item Description Detailed operationMenu structure Main menu itemParameter editing Direct accessScrolling Application parameters Installation parametersMain menu parameters Stop On P251 De-sludge parametersDescription P240 Start On P250Max Retries P257 Stop If P252Start Time P253 Interval P254MA output parameters Cleaning parameters4 0/4-20mA P403 Alarm Action P402Alarm mode relay RL1 and RL2 parameters P540 to Relay RL1 mode P410 and RL2 mode P420Table B Relay Parameter numbers On mode relay RL1 and RL2 Fault mode relay RL1 and RL2 parameters P560 to P570Set point mode relay RL1 and RL2 De-sludge mode relay RL1 and RL2HMI upper, middle, and lower display options Display parameters HMIRelay On and Off Points Relay overrides Min ON, Max ON, and Min OFFClear Trend Backlight On/Off P575Clear Profile Fast log P591 Low Mem Alarm P593Logging parameters Log Interval P590Common algorithm parameters P621 to P629 Parameter values Default Min Max 128 1024Engineering parameters 1 Alg. Select P620Noise Alrm Lev P622 Parameter values Default Min Max 100 Top Blanking P623Parameter values Default Min Max 9999 Upr S-nat Temp P625 Default Min Max +85 105 185Bottom Blanking P628 Default Min Max +85 185 SoS constant P627Default metric m/s Lwr S-nat Temp P626Sharp Echo Reject P631 Parameter values Default Min Max Lost Echo Rnge P633Municipal 1 parameters P630 to P637 Significance P630Noise SD Mult P635 Parameter values Default Min Max Dirty Mult P636Parameter values Default Min Max Lost Echo Time P637 Parameter values Default Min Max 255Threshold level = Threshld Offset P640 + Noise Level D834 Parameter values Default Min Max 100Municipal 2 parameter P640 Threshld Offset P640Display test Load Defaults functionSystem parameters Auto Cycle functionComms parameters P710 to P716 Settings parameters P730 to P737 and Base Units selectionFixed parameters D750 to D753 PIN parameter P740Readings parameters D800 to D834 Readings and diagnostics parametersDiagnostics parameters D835 to D852 Max Xdr Temp D851 Speed of Sound D850Min Xdr Temp D852 Transmit pulse and echo processing MaintenanceTroubleshooting Technical referenceSub-menu Level Parameter Title Par No Main Menu Option Programming chartProgramming chart … Direct Outputs Specification12.1 MSL600 Model NoAdditional specification notes Weight12.2 MSL603 transducer MSL600 Bridge mounted unit Dimensional drawingsMSL600 and MSL603 assembly Parts required MSL603 transducer cable extensionFitting instructions MSL600 MSL600 Emerson Process Management Rosemount Measurement
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