User`s guide

88 DC 900-1340I
BSC Programmer’s Guide
4.1 Data Rate Option (1)
The data rate can be set by the client for installations where the communications server
must generate the data clocking signal. If external clocking is provided by a modem or
modem eliminator, the configuration of the data rate is not required. However, when
transmitting data, the BSC software uses the data rate setting to calculate the amount of
time to wait before aborting a transmission with the
DLI_ICP_ERR_XMIT_TIMEOUT transmit
timeout error. Therefore, if BSC is being used to transmit data, the data rate should be
set to match, or be slower than, the modem clock rate.
The data rate on a link can be set from 75 through 56,000 bits/second. When using data
rates above 19,200 bits/second, be careful not to overload the communications server
processor. Freeway supports up to 16 links per ICP. The maximum link data rates are:
• 1 link at 56,000 b/s
3270 Text Addressing 27 0 Disable
1  Normal
2 Reserved
3 Automatic printer emulation
4 Device emulation
DSR/DCD Delay 30 n 3 n = reporting delay in seconds
(1 to 127)
Electrical Interface
(Freeway 1000 only)
40 0  EIA-232
1 EIA-485
2 EIA-530/EIA-449 (balanced, EIA-422)
3 V. 3 5
4 EIA-449 (unbalanced, EIA-423)
5 EIA-562
Table 4–1: BSC 3270 Link Configuration Options and Settings (Cont’d)
Option Number Value
Default
()Setting