User`s manual

Western Reserve Controls, Inc. 1782-JDC User’s Manual
6
“record number”, which the host application must increment each time a new record is
sent to that specific serial device. The bytes following this will be the ASCII data being
sent to the ASCII device.
3. Perform a poll command to the JDC. ASCII data will be sent to the JDC in the data bytes
immediately following the record number.
4. If any data is in the receive buffer in the JDC when the poll command is sent, the received
data will be returned as a poll response. (If the sequence number is the same as the
previous response, a new string has not yet been received by the JDC.)