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Local IP Address 

This is the IP address of the device. This address is the same as the TCP comms 
section. 

Local Subnet 

This is the subnet of the device. This subnet is the same as the TCP comms section. 

Remote UDP IP address.  

Address of remote connection to microDAQ. If set then the microDAQ can be set to 
auto stream data to that remote host on boot up (after initialisation) 

Remote UDP port. 

Port of remote connection to microDAQ. If set then the microDAQ can be set to auto 
stream data to that remote host on boot up (after initialisation) 

‘Use IENA Specification for 
Data Stream’ 

Turns the Data stream format to IENA specification format. More information on this 
format can be found in the user programming guide.  

‘Apply’ 

Applies the settings to the local settings memory 

Table 5.4, UDP Comms group settings 

 

5.3.5  CAN Parameters 

The CAN  communication settings are shown in Figure 5.6.  Options are available to set the base 
message  ID  number  may  be  selected,  and  the  offset  from  this  base  number  for  the  reception  of 
user commands over CAN, and whether an acknowledgement of these user commands is sent on 
the  next  higher  message  number.    Data  may  be  transmitted  on  either  multiple  messages,  or 
alternatively on a single message ID, with a selectable delay between messages. Additionally the 
CAN bus baudrate and sample point can be modified via the setting of the BRP, TSEG1, TSEG2 & 
SJW registers. 
 

 

Figure 5.5, CAN Comms group 

 

‘CAN First TX Message ID’ 

microDAQ uses standard CAN message arbitration id’s, and the unit is assigned the 
most significant 2 digits of the Hex base address.  For the digits 0x1A for example, 
data for the first 4 channels will be sent on 0x1A0, the next 4 on 0x1A1, etc. 

Message scheme/delay 

Select ‘Multiple Messages’ for the 4 channels per message, multiple message 
scheme.  Alternatively data may be packed 3 channels per m identifier byte, 
with a selectable delay between messages. 

‘CAN RX ID Offset’ 

Selects the hex offset from the base message ID where microDAQ will receive 
incoming user commands (see user command document).  If ‘Ack. Enabled’ is 
selected, the unit will acknowledge the reception of a correctly formatted command on 
the message ID calculated as Base ID + RX  1 

‘Apply’ 

Applies the settings to the local settings memory 

Table 5.5, CAN Comms group settings. 

 

 

Содержание microDAQ-Mk2

Страница 1: ...Road North Walsham Norfolk NR28 0AJ ENGLAND Tel 01692 500555 Fax 01692 500088 microDAQ Mk2 Pressure Scanner Acquisition System INSTALLATION AND OPERATING MANUAL e mail info chell co uk Visit the Chell...

Страница 2: ...ied in this manual may impair the user s protection Chell Document No 900193 Issue 1 3 ECO 2230 Date 9th May 2016 Chell s policy of continuously updating and improving products means that this manual...

Страница 3: ...erver 8 5 1 Introduction 8 5 2 Common Controls Sidebar 9 5 3 The Setup Page 9 5 3 1 Introduction 9 5 3 2 Data Streaming 9 5 3 3 TCP Parameters 10 5 3 4 UDP Parameters 10 5 3 5 CAN Parameters 11 5 4 Li...

Страница 4: ...date both conventional HD series scanners and Digital Thermal Compensation DTC scanners with 16 32 and 64 channels The microDAQ is supplied with all the software required to configure it and read the...

Страница 5: ...ons USB2 0 micro 57600 baud no parity 8 data bits and 1 stop bit 2 4 Ethernet Specifications TCP IP 10Mb s 100Mb s via Auto Negotiation TCP UDP protocols supported 2 5 Operating conditions Operating t...

Страница 6: ...ge to the unit Always switch the power at the power supply source 3 3 Scanner Connector Internal micro miniature D type female Pin number Signal 1 Address line A0 2 Address line A1 3 Address line A2 4...

Страница 7: ...atus If there isn t a valid connection the process waits until either a network is found or the timeout occurs This timeout is configurable via setup and ranges from 0 to 30 secs per check 2 checks Wh...

Страница 8: ...d set and so on When the hardware trigger is activated the microDAQ will wait for the first pulse The time that this first pulse is generated can be measured by the user and therefore the time of the...

Страница 9: ...s the tools for performing a new calibration namely calculating and downloading new coefficients and the means to managing calibration data Data from the calibration procedure and resulting coefficien...

Страница 10: ...ach category is detailed separately in the following 5 3 2 Data Streaming The Data Streaming section allows the user to change settings that affect all three communication protocols and allows the use...

Страница 11: ...ory Table 5 3 TCP Comms group settings 5 3 4 UDP Parameters The UDP section figure 5 5 holds all the settings specific to UDP In UDP mode each acquisition cycle of x number of channels is packed as a...

Страница 12: ...whether an acknowledgement of these user commands is sent on the next higher message number Data may be transmitted on either multiple messages or alternatively on a single message ID with a selectab...

Страница 13: ...16 bit unsigned calibrated decimal 16 bit unsigned and engineering units or voltage scaled to the known full scales Also for DTC scanners the temperature values as raw unsigned 16 bit and calibrated e...

Страница 14: ...non temperature calibration may be performed at a single temperature Figure 5 9 shows the Calibration tab controls which are further explained in table 5 8 The Live values section is an indicator of...

Страница 15: ...emperature calibration Unchecked only temperature point 1 is available to the user and the system will calculate coefficients for a non temperature calibration Live Values The live values of the curre...

Страница 16: ...rol Function Range Shows the floating point value for the range contained within the scanner x3 derange Shows the floating point value for the sensitivity derange constant contained within the scanner...

Страница 17: ...n data will remove single impulse noise events in the pressure data Temperature Input Impulse Filter As above but with temperature data Pressure input average samples Selects the number of samples for...

Страница 18: ...TSEG1 TSEG2 SJW Register values for the CAN module within microDAQs microcontroller Table 5 9 Advanced communication settings 5 7 3 Miscellaneous The remaining parameters are edited via the Miscellan...

Страница 19: ...AQ s internal calibration data table If I daq detected use raw calibration If checked this replaces the normal polynomial calibration function with a raw linear function whenever an I daq is present i...

Страница 20: ...ear calibration Figure 5 12 Span and zero coefficients 5 9 Timestamp page This page allows the user to edit the timestamp settings of the microDAQ This timestamp will alow the user to get millisecond...

Страница 21: ...the timestamp for every channel It should be noted that the latter 2 options will reduce the maximum transmission speed datastream get PC time This button allows the user to get the timestamp from the...

Страница 22: ...ual basis and Chell Instruments Ltd Provides a fully traceable facility for this purpose 6 3 Adjustment There are no user adjustments in the instrument The user is strictly forbidden from removing the...

Страница 23: ...uter Gnd 7 3 Can Connector Mating connector 9 way dtype male Pin Number Designation 2 CAN_L 5 Gnd 7 CAN_H 4 N C 5 0V 7 4 Trigger Connector Mating connector 50 Ohm BNC Pin Number Designation Center TTL...

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