B&B Electronics DCDSS1 manual Operation Data Storage, Data Delivery Triggers, Polling Strings

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.

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