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
