Visara LINCS Configuration - Manual (Page 73)

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Chapter 3. Line Options
707023-003
BSC Line Code
This field lets you determine the character set for the BSC line. Two toggle options are available:
• EBCDIC (Default)
• ASCII - The ASCII line code uses 7 bits with odd parity checking.
BSC DFT Response
The option selected for this item is important only if DFTs are to be attached to the LINCS
node. You should obtain the appropriate value from the system programmer at your host site.
Toggle to select: ACK - positive acknowledgment, WACK- wait for acknowledgment
ACK
If the BSC DFT response is configured for ACK, LINCS will wait until the DFT has completed
processing the data before responding to the host. If the received data did not contain any errors,
LINCS will respond with a positive acknowledgment (ACK). If errors were detected, LINCS
will respond with an EOT. The host can then poll LINCS to determine the error status.
ACK is supported by systems using IMS/VS with BTAM, TCAM, or ACF/TCAM with IBM’s
Communication Controller’s Emulation Program (EP).
WACK
If the response to this configuration question is WACK (wait for acknowledgment), LINCS
will immediately respond to the host data with a WACK. The data transfer status will be sent
to the host in response to the first poll after the DFT has processed the data.
WACK is supported by systems using enhanced 3270 BSC protocols. IBM programs that
support BSC WACK are the following:
• ACF/NCP Version 1, Release 2 or higher (CICS/VS and IMS/VS using VTAM or TCAM
and ACF/NCP are supported.)
• ACF/VTAM with Communication Adapter Support (4331, 4361, 9370)
• CICS/VS Version 1, Release 6 and higher
• SP, Release 3 and higher
Number of SYNC Characters
This feature allows you to configure the number of SYNC characters inserted by LINCS at
the start of each transmission to the host. Toggle to select one of the following:
2 (default), 3, 4, 5, 6, or 7.