User`s guide

4: BSC 3270 Link Configuration Options

DC 900-1340I 103

with the “start print” bit set in the write control character (WCC), the link responds to

the data block with WACK instead of ACK. It then queues up a “device end” sense/sta-

tus message to send in response to the next general poll received from the master. See

Section A.4.3 on page 200 for more information on 3270 command checking. See

Section A.4.4 on page 204 for more information on sense/status messages.

If this option is set to device emulation, 3270 command checking is performed, device

status is kept, and device address embedding is performed. This setting is used in appli-

cations that emulate IBM 3270 printers or displays. See Section A.4.3 on page 200 for

more information on 3270 command checking.

Note

The setting of this option applies to all of the control units config-

ured on a multiple CU link. For example, if a link is configured for

control units 0 and 1, it is not possible to have control unit 0 oper-

ating under the IBM 3270 setting (enable) and control unit 1 oper-

ating under the device emulation setting at the same time.

To set this option using the DLI configuration file, use the textAddr parameter; for

example,

textAddr = ”normal”. See Table 7–1 on page 190.

4.23 DSR/DCD Delay Option (30)

This option determines the delay in seconds between the time BSC detects a loss of the

data set ready (DSR) or the data carrier detect (DCD) modem signal (depending on the

setting of the modem control option, Section 4.14) and the time this loss is reported to

the client application program. This option is designed for use in systems where

momentary losses of the DSR/DCD signal are common.

When the BSC software detects a loss of the DSR/DCD signal, it delays for the specified

number of seconds before reporting the loss with the