Product data

50
LINCS Configuration
707023-003
Toggle options are:
External (default), 1200, 2400, 4800, 9600, 14.4 Kbps, 19.2 Kbs, 38.4 Kbs, 48 Kbs, 57.6
Kbs, 64 Kbs, 128 Kbs, 256 Kbs, 512 Kbs, 1 Mbps.
SDLC/DAP
The SDLC Distribution Access Point (SDLC Concentration) feature enables LINCS to emulate
a front end processor’s ability to poll remote PU 2.0 devices over SDLC links. LINCS using
this feature can attach to a variety of high-speed host connections, including multiple host
connections, which can be any or all of the following:
• SNA Channel
• SDLC (using an HSC board)
• Any SNA protocol on Token Ring (LLC or TCP/IP where LINCS is a DSPU)
• Any SNA protocol on Ethernet (LLC or TCP/IP where LINCS is a DSPU)
Visara terms this polling capability Distribution Access Point (DAP). The DAP software (SDLC
primary) runs on standard SCC or HSC cards in place of the traditional (SDLC secondary)
software.
For additional information, see:
• Example of a SDLC/DAP line options panel
• SDLC/DAP Hardware Requirements
• SDLC/DAP Software Requirements
• How SDLC/DAP works
• NCP Parameter Definitions
• Final Considerations
SDLC DAP Line Options
Line Options/SCC1.0 LINCS C8.2 Central Control
Line Protocol: SDLC/DAP
Duplex: Half
Request to Send - RTS: Permanent (Point-to-Point)
NRZ/NRZI: NRZ
Transmit Clock: External
Give Priority to PUs with Data - HDXSP: Enable
Reply Timeout - REPLYTO (.1 sec): 10
Max Retries - RETRIES: 10
Min Time Between Polls - PAUSE (.1 sec): 02
XID Polling Interval for Inactive PUs: 30
Max RNR Responses - RNRLIMIT: 100
PF: 1-Menu 7-Back 8-Forw 9-Default 10-Done
This panel is an example of a Line Options panel for the SCC card, when SDLC/DAP is the
selected Line Protocol. This is downstream connection from the LINCS node for DAP.