SC-USB USB to CS I/O Opto-isolated Interface
14
•
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
(p. 17)
, 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 and 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 sessions. It is currently supported by PakBus
dataloggers and recent versions of the CR5000 operating system.
