Home WTI User's Guides
1. Introduction
2. Binary Block Read Mode and Structure
2.1. Compressed Binary Block Read Sequence
2.2. Compressed Binary Block Structure
2.2.1. Data Block Structure
2.2.2. Record String Structure
3. Compression Decompression Methods
3.1. Table Decompression
3.1.1. Nibble Positioning
3.1.2. Record String Format Data Decompression Considerations
3.1.3. Table Decompression Example
3.2. Space Compression
4. DLE Stuffing
5. The Cyclic Redundancy Check Option
5.1. Calculation
6. Other Binary Read Commands
6.1. Continuous Binary Block Read
6.2. Send Binary Information Block
7. Customer Service
PollCat NetLink B

6.1. Continuous Binary Block Read


Command ^B07 initiates a continuous binary block read, regardless of the current output mode setting. Blocks are sent continuously, without acknowledgment, and cannot be retransmitted during the current read session. When transmitting via modem, make certain that error correction is enabled. A DOS program is available to convert the binary data to ASCII. The following settings are automatically used:

Output Mode: Binary Block

Line ID (Block #) Tag: Off

DLE Stuffing: On

Auto-Delete: Off

When command ^B07 is invoked, the following format is used:


@n (Offset) Releases records starting with the "nth" record, where "n" is a positive, whole number. For example, if ^B01@234 is sent, NetLink will start with the 234th record.


•                      To exit Continuous Binary Block Read and return to Command Mode, send command ^B30.

•                      If both Alarm Filters include a clue with the same name, the command must specify the desired filter. For example, if Alarm Filters 1 and 2 both include a clue named TEST, to retrieve data from filter 1, the command line would read ^B07,A1,"TEST".

•                      Square brackets are not included in the command line. They are shown here to indicate an option.

•                      Each command option is preceded by a comma, with the exception of the Offset option (@n). This option is preceded by the "@" character. Do not enter a comma before the "@" character.

•                      While Continuous Binary Block Read is active, NetLink responds to XON/XOFF flow control codes.


Options can also be combined. For example, ^B07,PA,A1 will release all records received via PBX Port A, which matched Alarm Filter 1.