User`s guide
6 DC 900-1340I
BSC Programmer’s Guide
4.15 Safe Store Option (17)............................ 96
4.16 Station ID Option (18) ........................... 97
4.17 Message Blocking Option (19) ....................... 97
4.17.1Blocking Disabled............................ 97
4.17.2Data Blocking.............................. 98
4.17.33270 Command Blocking........................ 98
4.18 Block Checking Option (20) ........................ 99
4.19 Queue Limit Option (21).......................... 100
4.20 Read Session Option (23).......................... 101
4.21 Interpoll Delay Option (25)......................... 101
4.22 3270 Text Addressing Option (27) . . ................... 102
4.23 DSR/DCD Delay Option (30)........................ 103
4.24 Electrical Interface Option (40)....................... 104
5 BSC 2780/3780 DLI Functions 105
5.1 Summary of DLI Concepts......................... 106
5.1.1 Configuration in the Freeway Environment.............. 106
5.1.2 Normal versus Raw Operation..................... 107
5.1.3 Blocking versus Non-blocking I/O................... 108
5.1.4 Buffer Management........................... 109
5.2 Example BSC 2780/3780 Call Sequences .................. 110
5.3 Overview of DLI Functions for BSC 2780/3780 . . ............ 112
5.3.1 DLI Optional Arguments........................ 114
5.4 Overview of BSC 2780/3780 Requests using dlWrite............ 115
5.4.1 Commands using Raw dlWrite..................... 118
5.4.1.1 Set Translation Table Command................. 118
5.4.1.2 Clear Statistics Command.................... 118
5.4.1.3 Set ICP Message Buffer Size Command............. 119
5.4.1.4 Configure Link Command.................... 120
5.4.1.5 Start Link Command....................... 121
5.4.1.6 Stop Link Command....................... 122
5.4.1.7 Safe Store Acknowledge Command............... 123
5.4.1.8 Send EOT Command....................... 125
5.4.1.9 BSC 2780/3780 Send Disconnect Command .......... 125
5.4.1.10 BSC 2780/3780 Signon Command . . . ............ 126
5.4.1.11 BSC 2780/3780 Poll Line with No Data Command. ...... 128