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Output of measured values

ML77B

A00760_09_E00_00

HBM: public

Byte
2

Byte
1

Byte
0

Status

meas. val. subchannel 2

Byte
2

Byte
1

Byte
0

Status

meas. val. subchannel 3

Byte
2

Byte
1

Byte
0

Status

meas. val. subchannel n

Notice

If the measuring rate of the communication processor is set to a value below 60
Hz, an average filter will be activated automatically.
Thereby the lowest 2 bits of the measured value will always be set to 0 (only
24-bit mode)!

In 16-bit mode the measured values of the subchannels are represented in the
memory as follows:

Byte address in PLC
memory

MSB

LSB

Byte 1

Byte 0

meas. val. subchannel 1

Byte 1

Byte 0

meas. val. subchannel 2

Byte 1

Byte 0

meas. val. subchannel 3

Byte 1

Byte 0

meas. val. subchannel n

The measuring status is always set to zero in 16-bit mode.

Notice

If the ML77B uses output data, there always has to be at least one measuring
channel in the configuration!

Содержание ML77B

Страница 1: ...Operating Manual English ML77B Profibus Interface...

Страница 2: ...x 49 6151 803 9100 info hbm com www hbm com Mat 7 2002 0577 DVS A00760_09_E00_00 HBM public 06 2018 E Hottinger Baldwin Messtechnik GmbH Subject to modifications All product descriptions are for gener...

Страница 3: ...20 8 1 Parameters menu 20 8 1 1 Setup window DP settings 20 8 1 2 Setup window Scaling P2 00 or later 21 8 1 3 Setting the Profibus address 21 8 2 Options menu 22 8 2 1 Output data dialogue window 22...

Страница 4: ...Output data for 32 channel device 36 9 2 9 ML77B output data if ML77B has one subchannel 36 9 2 10 ML77B output data if ML77B has several subchannels available as from firmware version P2 00 37 9 3 Di...

Страница 5: ..._09_E00_00 HBM public 5 11 2 4 Subsequent configuration bytes for 32 channel device 54 11 2 5 Subsequent configuration bytes for the ML77B 56 12 Setup parameters in the AB22A Setup mode 58 12 1 Parame...

Страница 6: ...6 A00760_09_E00_00 HBM public ML77B...

Страница 7: ...observe the permissible maximum ambient temperatures and humidity stated in the specifications S The device must not be modified from the design or safety engineering point of view except with our exp...

Страница 8: ...lly completed the training to qualify you to repair the automation systems You are also authorized to activate ground and label circuits and equipment in accordance with safety engineering standards I...

Страница 9: ...technology In addition equipment planners installers and operators should plan implement and respond to the safety engineering considerations of measurement technology in such a way as to minimize re...

Страница 10: ...death or serious physical injury CAUTION This marking warns of a potentially dangerous situation in which failure to comply with safety requirements can result in slight or moderate physical injury N...

Страница 11: ...the product CE mark The CE mark enables the manufacturer to guarantee that the product complies with the requirements of the rele vant EC directives the declaration of conformity is avail able at http...

Страница 12: ...mitted Transmission of measured values gross net peak sample time limit switch status control bits for taring zeroing peak value control parameter set switch ing and optionally the limit value levels...

Страница 13: ...e Profibus message by means of a config uration tool e g Step7 and device database files GSD files or manually in accordance with Chapter 11 A GSD file describes the properties of a Profibus node in a...

Страница 14: ...Guideline 14 A00760_09_E00_00 HBM public ML77B PROFIBUS DP System configuration Profibus configurator SPS GSD Electronic device datasheets GSD files Fig 4 1 Configuration with GSD files...

Страница 15: ...case read the safety instructions 5 1 Pin assignment A 9 pin Sub D connector complying with standard on the AP77 connection board is used for connecting the Profibus Profibus male connector 1 5 6 9 G...

Страница 16: ...0 5 V Line B Line A Data ground Profibus male connector 3 5 6 8 6 8 3 5 Profibus Fig 5 2 Terminating resistors S Connect the Profibus line to the AP77 connection board Ensure that the Profibus connect...

Страница 17: ...BM device Profibus DP additional field devices general S Simulate the layout of your device with the device itself MGCplus being given as in slot 0 All the device modules must be mapped counting from...

Страница 18: ...select the required parameters Fig 6 2 Setting the parameters Instructions for users of the Simatic S7 PLC S To ensure consistent transfer of data of 3 bytes or 4 bytes you must use the SFC14 special...

Страница 19: ...Colour Meaning CHAN yellow Channel selected DIAG red Diagnostic message DATA EXCH yellow Bus status Data Exchange WAIT CONF red Bus status Wait Configuration WAIT PARAM red Bus status Wait Param BAUD...

Страница 20: ...riented display setup such as e g the desired representation of measured values F key assignment as signment of channel names DP setup Param data Configuration data Input data Output data Diagnostic d...

Страница 21: ...No data exchange System Display Parameters Options 4 8 1 2 Setup window Scaling P2 00 or later The scaling factor of each subchannel can be set for multichannel mode in this menu Phys unit kN Zero of...

Страница 22: ...mode and confirm when asked with 8 2 Options menu The displayed values will not be updated cyclically 8 2 1 Output data dialogue window Output data is displayed in hexadecimal format as received by t...

Страница 23: ...ns 8 2 3 Diagnostic data dialogue window Diagnostic data is displayed as transmitted from the MGCplus to the master 00 11 22 33 44 55 66 77 00 22 33 44 55 66 77 FF DIAGNOSTIC DATA CHANNEL3 Update Syst...

Страница 24: ...44 66 88 99 00 AA BB CONFIGURATION DATA CHANNEL3 0 System Display Parameters Options 8 2 6 Bus parameters dialogue window This menu enables some important ML77B bus parameters to be moni tored Meas up...

Страница 25: ...values of the 1 channel and 8 chan nel devices are read scaled and updated in the input data by the HS link Data is not necessarily requested at this rate by the DP master This frequency can be reque...

Страница 26: ...will find a description of the input data which the Profibus master can read off the MGCplus Refer to chapters 9 1 1 to 9 1 6 for a description on the bit level of the individual control words that ar...

Страница 27: ...s complement decimal point position must be signalled to reading device also see chapter Parameterisation For converting the values into fixed point format the number of decimal places must be specifi...

Страница 28: ...d values 8 PAR1 Active parameter set bit 1 9 PAR2 Active parameter set bit 2 10 PAR3 Active parameter set bit 3 11 PAR4 Active parameter set bit 4 12 14 Res Reserved 15 MODE 1 The parameter set number...

Страница 29: ...es Reserved 5 Res Reserved 6 CHN_ERR Error in channel 7 CHANGE Changed scaling of measured values 8 14 Res Reserved 15 MODE 1 9 1 5 Control word status Configuring a control word status word enables h...

Страница 30: ...the 1 channel devices ML01B ML10B ML30B ML55B Time stamp see chapter 9 1 6 Gross value Net value Peak value 1 Peak value 2 Channel status see chapter 9 1 3 Control word status see chapter 9 1 5 Softw...

Страница 31: ...Input data of 32 channel device Due to Profibus protocol format restrictions MGCplus multi channel moduls with up to 128 subchannels enable only the first 32 subchannels to be dis placed The below da...

Страница 32: ...to 9 2 10 deal with the permissible combinations of the individual control words for the different channel types The functions that can be triggered in the control words are partly edge trig gered the...

Страница 33: ...selection Bit 2 10 PAR3 Pos edge Parameter set selection Bit 3 11 PAR4 Pos edge Parameter set selection Bit 4 12 CAL_SIG Static 1 Calibration signal ON 0 OFF 13 res res Reserved set to 0 14 MOM PEAK1...

Страница 34: ...ction Bit 1 9 PAR2 Pos edge Parameter set selection Bit 2 10 PAR3 Pos edge Parameter set selection Bit 3 11 PAR4 Pos edge Parameter set selection Bit 4 from version P1 10 on 12 13 res res Reserved 14...

Страница 35: ...value level 2 see chapter 9 2 2 Limit value level 3 see chapter 9 2 2 Limit value level 4 see chapter 9 2 2 Tare value see chapter 9 2 2 The desired data is entered into the configuration telegram an...

Страница 36: ...77B measurement data that can be read by the CPxx or by catman When the measurement data is read in 32 bit format configuration bits 0 2 of configuration byte 1 must be used The output data is then ma...

Страница 37: ...onfiguration When the sampling rate of the CPxx is set to less than 60 Hz the averaging function is activated automatically This causes the lowest 2 bits of byte 0 to be lost 9 2 10 ML77B output data...

Страница 38: ...680 000 and for the 16 bit values 30 000 30 000 The physical measured value is calculated in accordance with the following formula phys value integer value range full scale zero offset Range 7 680 00...

Страница 39: ...In 16 bit mode the measuring values of the individual sub channels are represented in the output data range of the PLC as follows Byte address MSB LSB 0 Meas value sub channel 1 Byte 1 Byte 0 2 Meas...

Страница 40: ...of device diagnosis is 5 bytes 1 0 0 1 No error with inputs channel 9 Error with inputs channel 9 1 1 0 1 No error with inputs channel 10 Error with inputs channel 10 1 7 0 1 No error with inputs chan...

Страница 41: ...equest data from channels that are actually available in the system Measured value overload Check transducer and amplifier settings No communication with channel Switch off and on the MGCplus Error ca...

Страница 42: ...not available chan n m 1 Chan n missing 1 Wrong configuration chan n 1 Wait for link master 1 The configuration of chan n doesn t match the parameterisation 1 The configuration of slot 0 is missing 1...

Страница 43: ...atically Thereby the lowest 2 bits of the measured value will always be set to 0 only 24 bit mode In 16 bit mode the measured values of the subchannels are represented in the memory as follows Byte ad...

Страница 44: ...be left shifted by 8 bit Byte address in PLC memory MSB LSB 0 01 86 A0 00 meas val 100 subchan 1 To set the correct scaling factor use the following formula PhysValue IntegerValue 7 680 000 Fullscale...

Страница 45: ...C memory MSB 0 27 10 meas val 100 subchan 1 To set the correct scaling factor use the following formula PhysValue IntegerValue 30 000 FullScale ZeroOffset or FullScale PhysValue ZeroOffset 30 000 Inte...

Страница 46: ...has been set applies for all measured values exchanged in the cyclic data traffic The definition of decimal places is only relevant for the Signed16 and Signed32 formats Example With 3 decimal places...

Страница 47: ...of decimal places acc to dis play 2 Bit 0 2 Enable PAR1 3 control bits in control word 0 disabled 2 Bit 3 5 Reserved 2 Bit 6 Enable MOMPEAK1 control bit in control word 0 disabled 2 Bit 7 Enable MOMP...

Страница 48: ...ol word 0 disabled 2 Bit 0 Enable ACAL control bit in control word 0 disabled 2 Bit 1 Enable TAR control bit in control word 0 disabled 2 Bit 2 Enable NULL control bit in control word 0 disabled 2 Bit...

Страница 49: ...l 2 2 Bit0 3 decimal places for subchannel 3 2 Bit4 7 decimal places for subchannel 4 3 decimal places for subchannel 5 6 4 decimal places for subchannel 7 8 5 decimal places for subchannel 9 10 6 dec...

Страница 50: ...e in the system the configuration telegram may be abridged accordingly before transmission CFG Byte Meaning Permissible values for CFG Hex 1 Device status 0x00 blank space no device status control wor...

Страница 51: ...ith selectable amount of decimal places The parameterisation telegram is used for specifying whether the 16 bit format or the 32 bit format is to be used and for defining the number of decimal places...

Страница 52: ...manufacturer specific data Length of cyclic data inputs Length of cy clic data out puts Contents of cyclic data Byte no Bit no words words 0 0 4 Channel type 1 1 channel 2 bytes follow 2 8 channel 8 b...

Страница 53: ...ak value 2 1 4 1 Channel status 1 5 2 Time stamp 1 6 1 2 Softw peak 1 7 1 2 Remote contacts Output values 2 0 1 channel control word 2 1 1 2 Limit value level 1 2 2 1 2 Limit value level 2 2 3 1 2 Lim...

Страница 54: ...1 4 PV2 2 3 2 4 1 Channel status 2 5 2 Time stamp 2 6 1 Channel control word 2 7 1 2 Tare value Subchannel 8 8 0 3 1 2 Signal selection 0 No value 8 1 Gross 2 Net 8 3 PV1 4 PV2 8 3 8 4 1 Channel statu...

Страница 55: ...subchannel 4 3 0 1 2 Measured value for subchannel 5 3 1 1 Channel status for subchannel 5 3 2 1 2 Measured value for subchannel 6 3 3 1 Channel status for subchannel 6 3 4 1 2 Measured value for sub...

Страница 56: ...to the MGCplus The 24 bit multichannel mode or 16 bit multichannel mode bits are set for this When operating in 24 bit multichannel mode 2 words must be reserved for each subchannel of the ML77B in 1...

Страница 57: ...CFG entry 24 bit multichannel mode status 2 words subchannel 2 0 1 2 bytes in gross signal of ML77B 2 1 1 2 bytes in net signal of ML77B 2 2 1 2 bytes in PV1 signal of ML77B 2 3 1 2 bytes in PV2 sign...

Страница 58: ...ameterisation menu 16 NODE 0 1 Bus parameters menu 21 EDIT 3 123 DP address 22 TEXT Behaviour with system errors 23 MENUE 1730 1731 1730 No data exchange 1731 Data exchange with diagnosis 111 EDIT 0 2...

Страница 59: ...T 8 byte parameterisation data 153 TEXT Subsequent 8 byte param data 154 TEXT Subsequent 8 byte param data 161 IS_KEY IS_MOD_VAL Update display 162 IS_KEY IS_MOD_VAL Clear maximum values 163 IS_EDIT I...

Страница 60: ...www hbm com HBM Test and Measurement Tel 49 6151 803 0 Fax 49 6151 803 9100 info hbm com measure and predict with confidence A00760_09_E00_00 7 2002 0577 HBM public...

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