XVME-976 Adapter Module
2-2
Table 2-2
.
Overview of Jumper Functions
Jumper Group
Function
W1 - W3
Port I/O address assignments
W4 - W6
Port interrupt assignments
W11 - W14
W18 - W19
Enable/disable signals from the optional serial port
W15 - W17
Terminators for RS485 lines
W20
Enable/disable bi-directional data on the parallel
port
Figure 2-1.Connector and Jumper Locations
Serial Port Driver/Receivers
The serial port COMA is an RS-232C port. The serial port COMB can be
configured as an RS-232C or RS-485 port. Implement your selection for this
second serial port by plugging in the appropriate driver/receiver ICs, as
shown in Table 2-3.
Table 2-3
.
Serial Port Driver/Receiver ICs
Driver/Receivers Installed
Interface
U10 (Max 239)
U11 (75176
U12 (75179
U13 (75179)
RS-232C
in
out
out
out
RS-485 Full Duplex
out
out
in
in
RS-485 Half Duplex
out
in
out
out
Содержание XVME-976/202
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