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System with online functionality

68

©

COMSOFT

8.3 Rotation time

Figure 63:

Rotation time

The

Rotation time

is the time the DP Master needs to poll all

configured DP Slaves once. The minima and maxima values
measured here are saved and displayed. The rotation time is
an unambiguous indicator for performance problems, i.e. in a
sporadic

non-functional

DP network.

Moreover,

the

NetTEST II

informs whether the PROFIBUS project planning

meets system requirements, as the PROFIBUS overall rotation
time must in any case be smaller than the system reaction time
required.

Tbit is the time measurement unit for the transmission of
a single Bit on the PROFIBUS, depending on the baud
rate. For example: 1 Tbit with 12 Mbaud = 1/12.000.000
Bit/s = 83 ns.

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Содержание NetTEST II

Страница 1: ......

Страница 2: ...with no terminators 12 5 2 1 3 Test with 1 terminator 16 5 2 1 4 Test with 2 terminators 18 5 2 1 5 Generate livelist 19 5 2 1 6 Slave ident number 20 5 2 1 7 Slave signal quality 21 5 2 1 8 Baud rat...

Страница 3: ...ST II 38 6 5 Send file from NetTEST II to the PC 39 7 Systems with PROFIBUS Master Option 40 7 1 Slave line up 41 7 1 1 Set outputs 43 7 1 2 Read inputs 43 7 1 3 Set value 43 7 1 4 Read value 43 7 1 5...

Страница 4: ...Show xchg data 59 7 3 2 8 Edit DPTag output 59 7 3 2 9 Show DPTag input 59 7 3 2 10 Show Slave diagnostic 60 7 3 3 Single DP services 60 7 4 DPTag definitions 61 7 4 1 Display edit tag 62 7 4 2 Creat...

Страница 5: ...11 Pin Assignment 80 12 Key Allocation 81 13 Problematic Slaves 82 14 Frequently Asked Questions FAQ 83 15 Technical Data 85 15 1 NetTEST II 85 15 2 Plug Charger 86 Tables Table 1 Segment length speci...

Страница 6: ...Screen User name list 26 Figure 20 Screen Customer list 27 Figure 21 Screen Plant List 27 Figure 22 Screen System configuration 28 Figure 23 Screen Device properties 29 Figure 24 Screen License code...

Страница 7: ...ag 62 Figure 56 Entry mask Tag data 62 Figure 57 Start up Screen with Online Function 64 Figure 58 Screen Line test 64 Figure 59 Screen Test with PLC 65 Figure 60 Baud rate detection 66 Figure 61 Gene...

Страница 8: ...charging holder one 230 VAC plug in battery charger power supply adapter one PROFIBUS Stub line 0 15 m DB9M DB9M one RS232 Cable connector DB9M DB9F one PROFIBUS Y Cable 0 15 m DB9M 2xDB9F one PROFIBU...

Страница 9: ...bage The battery pack could warm up during charging This is a normal process and not dangerous Do not use other chargers than supplied and specified by COMSOFT the batteries could otherwise be damaged...

Страница 10: ...ed and disconnected devices It does not matter if the devices are powered or not For physical testing you only have to ensure that there is no active Master PLC polling the bus Besides the standard ca...

Страница 11: ...performs a detailed analysis of the telegram traffic and the physical state of the PROFIBUS line To make installation checks and error retrieval as easy as possible we divided this manual into the fo...

Страница 12: ...uring measurements no Master is polling the bus or is sending tokens Pure PROFIBUS DP Slave devices as well as e g repeaters and optical couplers must not be disconnected from the bus An oversight ove...

Страница 13: ...repeater segment coupler or optical coupler The level detection of a Slave connected via such a device reflects only the transmission level of the repeater and not the one of the detected Slaves 4 3 M...

Страница 14: ...d information refer to the enclosed documentation of the battery charger Remove the battery from the charging holder and push it onto the NetTEST II until you can hear it snapped in Now push the key a...

Страница 15: ...eration of DP Slaves without PLC Test with PLC optional Detailed analysis of the telegram traffic and the physical state of the PROFIBUS line Test Protocol Test without PLC Like Line Test Test without...

Страница 16: ...eration is impossible For tests run under this menu no protocol is made out Figure 4 Screen Test without PLC For a line test at first the design parameters for the PROFIBUS segment that has to be chec...

Страница 17: ...ase for line segments under the assigned segment name From there they can be used as basis for both individual tests and the creation of test protocols Indications must be made as to the points listed...

Страница 18: ...er to keep these measuring insecurities in a tolerable scale please indicate before each measurement the number of installed 12 Mbit s plugs as well as the number of the devices connected to the bus P...

Страница 19: ...ates this at once Only if no more resistance in the thread is activated and all Masters are deactivated the NetTEST II informs about Line impedance Line length segment length Detections in segments wi...

Страница 20: ...he just scanned data were deleted If no error is detected on the PROFIBUS segment a positive acknowledgement message will appear displaying the cable impedance and cable length according to the follow...

Страница 21: ...wire and shield Error A B Capacitive load junction or Impedance changes There is a capacitive resistance between the signal wires which might be caused by a PROFIBUS device with unauthorized bus coupl...

Страница 22: ...f the error could be detected only roughly thus permitting only an error estimation Also with uncertain error situations the PROFIBUS segment has problems in any case even if the measured error is rel...

Страница 23: ...e terminator added and the unit switched on If the unit at the end of the line segment is a PROFIBUS Master take care that the bus participant does not actively send data onto the bus This can e g be...

Страница 24: ...is a low ohmic resistance in the cable between signal wire and shield Error A B short circuit or bus terminal without power supply There is a low ohmic resistance in the cable between the signal wire...

Страница 25: ...the segment If this should be a Master which cannot be made passive the data line has again to be disconnected from the segment via a bus disconnector Figure 10 Screen after Test with 2 term If the Te...

Страница 26: ...o ensure that also extremely slow units are recognized the test takes approx 30 seconds Should all connected units already be recognized the user can truncate the test with Should there be more units...

Страница 27: ...ber Via the Slave ident number menu the Ids for a better assignment of the DP Slave addresses to the unit type can be indicated Here a Slave_Diag_Request is executed on the respective device and this...

Страница 28: ...it and correctly terminated bus and a cable length of 1 m from the measuring point to the Slave at approx 6 3 Volt Per 100 m more cable between NetTEST II and the device to be scanned the level reduce...

Страница 29: ...an the general signal level at the bus is being measured analogous to Slave signal quality see chapter 5 2 1 7 Here the user receives immediately and without needing an oscilloscope an indication as t...

Страница 30: ...ame line segment name customer data for the test protocol 5 2 2 1 Create new protocol In the menu Create new protocol all steps necessary for the test protocol are executed successively The tests are...

Страница 31: ...d at this point By means of the key the single test is confirmed and the protocol compilation continues By means of key the protocol compilation is canceled 5 2 2 1 2 Test with PLC The test protocol c...

Страница 32: ...display is analogous to the display during measurement To go through the individual screens please use the key If the contents needs more space than available on the display you can scroll the screen...

Страница 33: ...of all users can be stored in a data base with 10 memory locations This saves time in case of multiple test for a renewed indication in the test protocol At the corresponding place the user name can...

Страница 34: ...stomers can be created The entries can be made before executing a test This saves time at the customer s site Figure 20 Screen Customer list 5 2 2 8 Plant list In order to have a reference to the plan...

Страница 35: ...off key signal automatic switch off time of the tool illumination time for the background illumination of the screen and language selection for the screen text 5 2 3 1 RS232 Interface The built in ser...

Страница 36: ...Device properties the version and serial number is displayed Additionally the options DP Master and Online functions can be activated if the appropriate license code is available Figure 24 Screen Lice...

Страница 37: ...ree capacitor This capacitor provides the clock with energy for about 2 weeks If within this period of time the battery pack is not charged time settings are lost If this case should arise the user is...

Страница 38: ...sure that e g test results of the Test with no term needed for the following Test with 1 term will not get lost by an untimely switch off of the tool 5 2 3 4 3 Illumination With Illumination the keys...

Страница 39: ...company GSD definitions Additionally will be stored for systems with Master Option Master Parameter Slave Parameter Tag Definitions 5 2 3 6 Send parameters In the submenu Send parameters the parameter...

Страница 40: ...ibrary The GSD library serves for the exchange of GSD files from the PC to the NetTEST II as well as for storing certain GSD contents Should the GSD files of the devices connected to one segment be st...

Страница 41: ...tor Prepare NetTEST II for reception of GSD file Receive GSD File Then select by means of the function Send file of the terminal function via the available browser the GSD file and send it by means of...

Страница 42: ...a the PC s COM interface With the Microsoft operating systems Windows 3 x 95 98 NT 2000 XP it is the HyperTerminal made by Hilgraeve which is part of delivery Below please find the necessary settings...

Страница 43: ...he max serial baud rate of NetTEST II to 115200 Baud The setting of data bits parity as well as stop bits is made analogous to the settings of NetTEST II see chapter 5 2 3 1 As NetTEST II does not sup...

Страница 44: ...nal program Start the configured terminal program on your PC In your terminal program click on Transfer Capture Text In the browser opening now enter the directory where you wish to save the test file...

Страница 45: ...your PC In the terminal program click on Transfer Send file Indicate in the browser opening now the directory where the file to be sent is stored Set the transmission protocol to Kermit Set NetTEST II...

Страница 46: ...to the COM interface set in the terminal application Start the previously configured terminal application on your PC Click on Transmission File receive in the terminal application Enter the directory...

Страница 47: ...Options are summarized in an additional menu item contained in the Line Test menu No protocol is drawn up for the tests under this menu item Figure 30 Screen Line test The NetTEST II offers you the c...

Страница 48: ...be changed or modified Figure 31 Screen PROFIBUS Master mode 7 1 Slave line up Before using Slave line up NetTEST II needs a valid Slave configuration This can be done either by creating and download...

Страница 49: ...wrong or the Slave is disconnected in operation The Slave is working properly input and output data are transferred in operation The Slave is working properly and reports external diagnostic data By s...

Страница 50: ...re defined via tags in the DP Master configuration This can be very helpful especially if REAL values are processed with the Slave 7 1 4 Read value Input values are an extraction from the input data s...

Страница 51: ...f up to 32 Slaves Moreover the segment configuration bus address baud rate and slot time can be downloaded from the COMSOFT Configurator to the NetTEST II 7 2 1 Master parameters The menu Master param...

Страница 52: ...PROFIBUS device This is marked by in the address selection menu each device at the PROFIBUS segment has to have his own individual address 7 2 1 2 Profibus parameters By choosing this option the PROFI...

Страница 53: ...on segments 7 2 2 Config with livelist By means of Config with livelist the user has the option of making a configuration using the current Slaves from the segment The bus configuration is however in...

Страница 54: ...the COMSOFT Configurator Tool The Configurator needs these for the configuration of the DP Slaves Start the COMSOFT Configurator The Configurator will depict a double window The left half of the windo...

Страница 55: ...logue The Slave Configuration menu subsequently displayed enables the user to configure the bus subscriber if supported by the GSD file parameter data module definitions as well as module parameters D...

Страница 56: ...ation relating to the COMSOFT Configurator Tool may be found in the Online Documentation of the Configurator Should the user possess a PROFIBUS Master card or FNL from COMSOFT then the configuration m...

Страница 57: ...ownload performed successfully then with the NetTEST II the received configuration has to be confirmed by pressing the key Figure 43 Confirmation Screen Receive CFG file Word of caution An existing co...

Страница 58: ...OFIBUS services or activate them by means of the NetTEST II Figure 44 Screen Slave menu 7 2 5 1 New Slave By choosing this option the user can newly define an additional Slave to the existing configur...

Страница 59: ...eded for all PROFIBUS Slaves The Slave name is needed for further referencing within the NetTEST II The other parameters are standard parameters for the Set_Prm_Req and can be retrieved from the appro...

Страница 60: ...ion of the UserParamData entry dialogue Entry of the Slave definition is concluded once this dialogue has been successfully filled out Figure 48 Entry mask Cfg data Note Creation of a PROFIBUS configu...

Страница 61: ...ber at the bus segment has to possess his own individual address The address selection takes place by means of the address selection menu see chapter 7 2 5 1 Further entries are not necessary for gene...

Страница 62: ...the NetTEST II Selection of the Slave to be edited takes place analogously to the selection of the Slave to be copied in chapter 7 2 5 2 Figure 50 Screen Process slave 7 3 1 Edit parameters With Edit...

Страница 63: ...the Tag editing menu The user may find further documentation in chapter 7 4 DP 7 3 2 Line up Selecting Line up will start the DP State Machine in the NetTEST II for the currently selected Slave The P...

Страница 64: ...Slave is incorrect Cfg_Fault Configuration data of the Slave are incorrect Not_Ready The Slave is not yet ready for data exchange Param_Req The Slave expects parameterization by the Master DATA_EXCHAN...

Страница 65: ...Slave Figure 52 Screen Line up 7 3 2 2 Edit slave address With this option the user can modify the PROFIBUS address of the Slave Address selection takes place over the address menu see chapter 7 2 5 1...

Страница 66: ...w xchg data Input data received by the Slave are displayed here The data packets sent cyclically from Slave to Master These values may not be changed 7 3 2 8 Edit DPTag output This option opens a subm...

Страница 67: ...s far as possible Due to the fact that the SLAVE_DIAG_REQ Service was performed the Slave resets this flag until the new diagnostic data occur 7 3 3 Single DP services By selecting Single DP services...

Страница 68: ...nput or output tags Example A DP Slave has 8 digital outputs which may be set or reset over the first output Byte NetTEST II makes it possible to define in this output Byte per Bit a tag of Boolean ty...

Страница 69: ...igure 55 Selection menu Display edit tag By choosing one of the entries the tag parameters may be displayed edited Figure 56 Entry mask Tag data A particularity of the tag properties is the bit granul...

Страница 70: ...entered For entering the tag properties please use the same properties mask as in chapter 7 4 1 Display edit tag 7 4 3 Delete tag When selecting Delete tag the same tag selection menu opens as in chap...

Страница 71: ...ed below Figure 57 Start up Screen with Online Function The NetTEST II online functions can be selected in a Line test menu item within the Line test menu list Figure 58 Screen Line test The NetTEST I...

Страница 72: ...t chapter 8 8 The DP Slave oriented signal level measurement can be very time consuming in connection with low baud rates or low data traffic The NetTEST II can be connected directly to a free PROFIBU...

Страница 73: ...d rate on the running PROFIBUS is displayed During the baud rate scan additionally the all over signal level on the PROFIBUS is measured and evaluated U 2 5 V Weak level or no longer detectable 2 5 7...

Страница 74: ...displays all active DP Slaves in connection with a DP Master All active DP Masters may be displayed as well using the key Figure 62 Generate Master livelist The DP Master detects a new DP Slave on th...

Страница 75: ...unambiguous indicator for performance problems i e in a sporadic non functional DP network Moreover the NetTEST II informs whether the PROFIBUS project planning meets system requirements as the PROFI...

Страница 76: ...measuring can be increased which enables the measuring even of very slow DP Slaves Only the visible DP Slaves max 5 are measured By means of the key the display window can shifted to switch to the re...

Страница 77: ...l measurement 8 4 1 Measurement with livelist For all DP Slaves contained in the current livelist a level measurement is performed 8 4 2 Measurement with filter For Measurements with filter the bar gr...

Страница 78: ...following every single step for the filter definition is described 1 A filter name with up to 30 characters can be defined Figure 67 Screen Filter name 2 In the DP Slave list the DP Slaves for the le...

Страница 79: ...keys or Figure 69 Screen DP Slave sorting 8 5 Signal level summary list Figure 70 Screen Signal level summary list In the Signal level summary list the result of the level measurement is displayed in...

Страница 80: ...No Response DP Slave is not responding TRY DP Slave needs more than 1 request by the DP Master CFG DP Slave was parameterised or configured DIA Diagnostic messages occur at the DP Slave Normally a cor...

Страница 81: ...counted 0 99999 DATA_XCHG_RES DATA Station is in state DATA_EXCHANGE NO_RESPONSE DATA DP Slave doest not respond SET_PRM_REQ CFG DP Slave was parameterized CHK_CFG_REQ CFG DP Slave was configured SLV_...

Страница 82: ...The following events can be selected SET_PRM_REQ Parameter data which the DP Master transmits to the DP Slave CHK_CFG_REQ Configuration data which the DP Master transmits to the DP Slave SLV_DIAG_RES...

Страница 83: ...P Slave This can be useful in connection with low baud rates or very slow DP Slaves Level scrolling Yes No Default No With Level scrolling activated the bar graph display is automatically shifted to d...

Страница 84: ...LED of the battery charger it is a time charger Charge time starts with mains ON and lasts for approx 6 hours During this time the charge control lamp is on if a battery is in the charger When the cha...

Страница 85: ...rate Max segment length 9 6 Kbit s 1200 m 19 2 Kbit s 1200 m 45 45 Kbit s 1200 m 93 75 Kbit s 1200 m 187 5 Kbit s 1000 m 500 0 Kbit s 400 m 1 5 Mbit s 200 m 3 0 Mbit s 100 m 6 0 Mbit s 100 m 12 0 Mbit...

Страница 86: ...ignal quality of the bus Passive stub lines however e g bus terminals or simple cable stubs have to be avoided in every case In general it is claimed that with low baud rates 500 Kbit s no or only min...

Страница 87: ...sposes of only one 9 pin D SUB connector This can optionally be switched to PROFIBUS or RS232 mode Pin PROFIBUS RS232 1 nc nc 2 RxD 3 TxD RxD B 4 GND 5 nc nc 6 nc nc 7 TxD 8 TxD RxD A 9 nc nc Shield S...

Страница 88: ...table shows the multiple key allocation Key 1 st push 2 nd push 3 rd push 4 th push 5 th push 6 th push 7 th push 8 th push 1 a A b B c C 2 d D e E f F 3 g G h H i I 4 j J k K l L 5 m M n N o O 6 p P...

Страница 89: ...ctive screening measures on the PROFIBUS signal lines or from excessively long spur lines within the DP Slaves During the line tests with NetTEST II these devices causes the error message Error A B Ca...

Страница 90: ...desirable but impossible due to the physical conditions of the PROFIBUS segment Does NetTEST II line test also work with other RS485 based buses If on the other bus no bus terminators are installed a...

Страница 91: ...Slave addresses No sorry in the current version this is not possible We are working on a clear detection of such errors Is it possible to implement in NetTEST II a PROFIBUS bus monitor for monitoring...

Страница 92: ...E1 7E2 7O1 7O2 7N1 7N2 8E1 8E2 8O1 8O2 8N1 8N2 RS232 protocol Kermit Test area cable length 5 m 1500 m Measuring inaccuracy with connected devices 5 Measuring inaccuracy without connected devices 2 m...

Страница 93: ...different roles 1 Signalise the faultless contact of the rechargeable battery during the test period approx 10 min 2 Signalise the right polarity of the rechargeable battery 3 Signalise a defect recha...

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