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User Guide 

13

 

4.1  Settings 

4.1.1  Auto Detect (Automatic Baud Rate Detection) 

Auto Detect will try to connect at the highest asynchronous baud rate the 

datalogger can support. This can be used in most cases. The exceptions are: 

 

Upgrading a datalogger operating system - see Section 4.3 below. 

 

Using Call Back, when you must fix the baud rate.  

 

Using a 21X or CR7 datalogger, where the baud rate needs to be fixed and set 

to either 9600 or 76800 baud (OS dependent).  

 

Using a non-Pakbus CR23X-TD datalogger – the baud rate may be adjusted 

to the maximum supported by the datalogger. (By default it will run at 9600 

baud.) See Section 5.2 for more details. 

Auto Detect is the Factory default. 
 

4.1.2  Selecting a Fixed Baud rate 

Bit rate selections available are 9600, 19200, 38400, 57600, 76800 & 115200 

baud as shown in the screenshot above.  Select the highest rate supported by the 

dataloggers being used. 

4.1.3  Enable All Comms Modes (Automatic Mode Detection) 

Selecting ‘Enable all Comms Modes’ automatically connects to the datalogger 

using the communications method that uses the least physical hardware resources. 

The priorities from highest to lowest are CSDC, SDC and finally Modem Enable 

(ME) mode. The default mode can be used in most cases. 
Exceptions are: 

 

When other SDC or CSDC peripherals are being used, in which case a 

free address must be selected. 

 

When Call Back is being used it may be necessary to fix the 

communication method to ME. 

 

When using non-Pakbus TD dataloggers, where the mode must be set to 

ME. 

 

When using a CR5000 datalogger with an operating system version 

earlier than 2.0, where the mode must be set to ME. 

Enable All Comms Modes is the Factory default. 

4.1.4  Enable CSDC Address 7 Mode 

Selecting ‘Enable CSDC Address 7 Mode’ will force the SC-USB to 

only

 respond 

as the CSDC device with SDC address 7. This is useful when you have another 

SDC-Concurrent device connected on the CSI I/O port. The modem enable line 

(pin 5) is not used and is free for other use. CSDC mode allows concurrent 

communication sessions. It is currently supported by Pakbus dataloggers and 

recent versions of the CR5000 operating system. 

4.1.5  Enable CSDC Address 8 Mode 

Selecting ‘Enable CSDC Address 8 Mode’ will force the SC-USB to 

only

 respond 

as the CSDC device with SDC address 8. This is useful when you have another 

CSDC device connected on the CS I/O port. The modem enable line (pin 5) is not 

used and is free for other use. CSDC mode allows concurrent communication 

Summary of Contents for SC-USB

Page 1: ...SC USB USB to CS I O Opto isolated Interface Issued 17 12 13 Copyright 2003 2013 Campbell Scientific Ltd CSL 514 USER GUIDE...

Page 2: ......

Page 3: ...e repair is under guarantee or not Please state the faults as clearly as possible and if the product is out of the guarantee period it should be accompanied by a purchase order Quotations for repairs...

Page 4: ......

Page 5: ...t for recycling Any batteries contained within the product or used during the products life should be removed from the product and also be sent to an appropriate recycling facility Campbell Scientific...

Page 6: ......

Page 7: ...e 11 4 Set up Modes the SC_USB Programming Utility 12 4 1 Settings 12 4 1 1 Auto Detect Automatic Baud Rate Detection 12 4 1 2 Selecting a Fixed Baud rate 13 4 1 3 Enable All Comms Modes Automatic Mod...

Page 8: ......

Page 9: ...USB also has the potential for high speed data transfer to the PC at up to 1MBit second where the datalogger supports it The SC USB will appear to PC software as a new virtual serial port allowing it...

Page 10: ...gth 3 metres 2 2 CS I O Port Specifications Opto isolated from the PC USB to 47V AC or DC Note that this is signal isolation only and does not provide safety isolation Supports asynchronous communicat...

Page 11: ...never possible you should install the drivers for the SC USB on the PC before plugging the SC USB for the first time The drivers need to be installed from the CD provided with the product or using the...

Page 12: ...this step has been reached click on Finish and then you can proceed to connect the SC USB to your computer 3 1 Installing the SC USB for the first time Connect the SC USB to a spare USB port on your...

Page 13: ...ing the latest drivers Please note that the screens below are from Windows 7 the exact appearance and wording will vary with other operating systems First use the CD to install the latest drivers onto...

Page 14: ...he computer If the driver installation as shown in Section 3 above worked OK you can select the first option and the new drivers already installed on the machine should be found OK If not then browse...

Page 15: ...Close to return to the Device Manager You will now see SC USB USB TO CS I O ISOLATED INTERFACE displayed under Universal Serial Bus controllers as shown below You will now notice a new device USB Ser...

Page 16: ...r Software in the menu that appears You will now be given the choice to search automatically or browse for driver software If previously installed OK click on Search or if it was not OK browse to the...

Page 17: ...you will see the following confirmation click Close to return to the Device Manager You will now see SC USB USB TO CS I O ISOLATED INTERFACE COMx displayed under Ports COM LPT where x is the number o...

Page 18: ...which COM port the SC USB has been assigned The above installation processes relies on parts of the Windows operating system to assign a com port number to SC USB Often this will be the next port numb...

Page 19: ...another free number OK any change you make and close the Device Manager screen before reopening it to confirm the change it does not automatically refresh this change The Baud rate settings in the dr...

Page 20: ...or 2 0 compatible port 4 Set up Modes the SC_USB Programming Utility The Set up button on the SC_USB exe utility allows you to configure the SC USB interface to work with the supported dataloggers and...

Page 21: ...o lowest are CSDC SDC and finally Modem Enable ME mode The default mode can be used in most cases Exceptions are When other SDC or CSDC peripherals are being used in which case a free address must be...

Page 22: ...ace connected to the same PC at the same time The default ID as supplied is 00000001 Close the SC USB utility when you have finished using it as its method of polling the SC USB may cause the PC to be...

Page 23: ...loggers do not support automatic baud rate detection In these cases the SC USB needs to be set to a fixed baud rate This can either be done using the SC USB utility program see Section 4 or if your so...

Page 24: ...rate and comms mode changed see above It cannot be used to load operating systems into the CR800 CR1000 or CR3000 dataloggers using the Send OS option of the Device Configurator as the dataloggers on...

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Page 26: ...rta T5M 1W7 CANADA www campbellsci ca dataloggers campbellsci ca Campbell Scientific Centro Caribe S A CSCC 300N Cementerio Edificio Breller Santo Domingo Heredia 40305 COSTA RICA www campbellsci cc i...

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