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The Analysis Tool for MOST Networking
CANalyzer.MOST is a convenient tool for analyzing the MOST bus with the familiar "look and feel" of the Vector tools. You can analyze both MOST25 and MOST150 networks and access all MOST channels. In addition, you can simultaneously include CAN networks in the analysis (multibus functionality).
CANalyzer.MOST supports you in interactive analysis of MOST communication, in which you can analyze – very flexibly and dynamically – either the real system or pre-recorded log files with the help of various representation forms.
Furthermore, CANalyzer.MOST frees you of many routine tasks that you can describe in analysis scripts, and which can then be repeatedly executed by CANalyzer.MOST. They deliver reliable and reproducible analysis results.
MOST150 Support in CANalyzer.MOST
Besides covering the special requirements of the MOST150 system, Vector has also considered the needs of experienced MOST25 users. Thanks to the unchanged user interface and programming interfaces, training effort has been kept very low. The table offers an overview of the MOST25 and MOST150 properties supported by CANalyzer.MOST.
Much of the proven analysis functionality is available, such as Trace, Data and Graphic windows, Registry and Audio windows and the Function Block Monitor. Filter options and the Interactive Generator block for stimulation of the MOST ring were also adapted to MOST150.
| MOST Feature |
MOST25 |
MOST150 |
| Control Channel |
Node/Spy |
Node/Spy |
| - CMS |
yes |
yes1 |
| - AMS |
yes |
yes |
| Asynchronous Channel (MDP) |
Node/Spy |
Node/Spy |
| - Raw packets |
yes |
yes |
| - MOST High Protocol (MHP) |
yes |
yes |
| Ethernet Channel (MEP) |
n.a. |
Node/Spy |
| |
| System States (Light, Lock, System Lock, ...) |
yes2 |
yes |
| |
| Audio/Synchronous Channels |
| - Allocation Table |
yes |
yes |
| - LineIn/LineOut |
yes |
yes |
| - S/PDIF In/Out |
CAPL |
CAPL |
| - Streaming to PC |
yes |
no |
| - Isochronous Channels |
n.a. |
no |
| |
| Stress |
| - Bus Load Control Channel |
100% |
yes3 |
| - Bus Load Asynchronous Channel |
100% |
yes3 |
| - Bus Load Ethernet Channel |
n.a. |
yes3 |
| - Unlock Generator |
yes |
no |
| |
| Logging |
| - Control Channel, Asynchronous Channel, Ethernet, System States |
BLF, ASC, IMG, OP24, CCO4, CC34 |
| - Synchronous Channels |
BIN, WAV |
no |
| |
| Hardware Interface |
VN2610 |
OptoLyzer G2 3150o | 1 Sending via CMS is possible. The node only receives the possibly assembled AMS messages. The single CMS frames are only visible for the Spy. 2 Precise Stable Lock and Critical Unlock assignment in VN2610 3 Via CAPL programs, with bus load generation restricted by the hardware interface 4 Does not contain all channels, detailed information at the author of the format For the operation with MOST150 a license for the Optolyzer integration package and the hardware interface OptoLyzer G2 3150o of SMSC is needed. Interested persons should send an E-Mail to the MOST product manager at Vector.
Interactive Analysis
- In the Trace window you can observe the data of the control and asynchronous channels that are transmitted via MOST messages. For comprehensible display these data are interpreted with the help of the XML Function Catalog. Thanks to the integrated combiners also segmented data like AMS and MOST High Protocol are displayed.
Color highlighting shows important MOST events and allows an easy analysis of the bus communication on the MOST ring.
- The Central Registry describes the current ring. It is displayed in a separate window and can comfortably be checked against a reference registry.
- Important hardware and network states, e.g. light & lock, configuration status, node addresses or bus load are displayed in the Status window and the Bus Statistics window respectively.
- If you would like to see the current states of your applications, glance over at the Function Block Monitor. It automatically shows all property values transmitted over the bus. Or select key properties from the XML function catalog and have them displayed in the Data window.
- The Graphic window gives you an overview of the behavior of individual properties or system states such as light & lock over a time period.
- You can use the Interactive Generator block for MOST to select messages from the function catalog and send them individually or as a sequence to ECUs. In the process, you can also conveniently parameterize complex parameter structures in the messages.
- In the Stress window you can conveniently generate bus load on the control and asynchronous channels as well as apply light & lock sequences with precise timing.
- The Audio window gives you an overview of channel reservation in the synchronous data area of MOST and lets you select individual connections and listen to audio signals or feed them in.
Automated Analysis
- The integrated CAPL programming language lets you create analysis scripts very conveniently. They may be used, for example, to automatically check for correct sequencing of certain messages or monitor conformance to specified time periods between events. In the process, you have access to all network states and a powerful input wizard that lets you conveniently copy message definitions from the function catalog.
- In addition to analysis tasks, you can also use CAPL to automate Stimulations that are subject to special reproducibility requirements or should occur as quickly as possible as a reaction to events in your system. For example, you can automatically start Stress functions to check whether your system behaves correctly in critical situations. Or you can stimulate the MOST ring with programmed message sequences. Specific pre-logged message sequences may also be played back on the ring using the Replay block.
Offline Analysis
- Offline mode helps you in interactive or automated analysis of pre-recorded log files. You can play back log files into the tool as in a real measurement and have analysis scripts automatically check them for correctness. The option of automatic switching from these scripts to a single-step mode lets you very quickly localize points of interest and then study them in greater detail interactively.
Access to the full bandwidth of the synchronous channels
- CANalyzer also enables full access to the synchronous area of MOST. Regardless of the configured Synchronous Boundary Control (SBC), all synchronous channels may be transmitted to the PC via USB, or in the reverse direction they may be fed from the PC onto the ring. This access option enables coverage of a whole series of new use cases by CANalyzer.MOST. They are described in detail in the Application Note MOST Synchronous Channel Access.
Multibus functionality
- The pure MOST variant of CANalyzer.MOST may be combined as desired with CAN, LIN, FlexRay and Ethernet variants. You can select which bus systems can be analyzed under the uniform user interface based on your exact needs.
- In the case of a CAN-MOST combination, you can see the messages of both bus systems in one Trace window, for example, and analyze their interrelationships. With analysis scripts, which then have simultaneous access to the messages and system states of CAN and MOST, you can automatically determine start-up times, measure gateway execution times or verify the signal routing algorithms of your gateway.
 Detailed information is available in the PDF data sheet.
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