B&B Electronics DCDSS1 - Manual (Page 5)

2 Appendix A Documentation Number DCDSS11702 Manual
B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445
Chapter 2: Operation
Data Storage
Data Buffer and Time Stamping
The DCDSS1 has a 60 Kbyte data buffer for storing data
collected through the local serial port and time stamp information.
The time stamp can be enabled to record the time that the data
came into the local serial port. A new time stamp is created when
new data is received after one minute of inactivity.
Polling Strings
Many serial devices require data to be requested before
responding. The DCDSS1 can be programmed with up to 10 polling
strings, each string up to 35 bytes in length. Each polling string is
individually configured and sent out of the local serial port on a time-
based trigger. In the PC setup software, fields are chosen to
schedule the polling interval of each polling string for minutes, hours
and days. Instead of a fixed interval, you can also select which day
of the month the polling string should be sent to the local device.
Data Delivery Triggers
The DCDSS1 will automatically connect through your ISP to
deliver its data and notifications. Three different types of events can
trigger the data delivery.
Time-Based Trigger
The time-based trigger can be user-configured to deliver data
based on time and date. For example, data may be delivered once
every hour, at 9:00 p.m. each Sunday, or on the first day of each
month. In the PC setup software, fields are chosen to schedule the
delivery interval for minutes, hours and days. Instead of a fixed
interval, you can also select which day of the month that data should
be delivered.