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CONFIGURING THE HOST COMPUTER PORT
Position 9 on Dipswitch 2 is for selecting the adapter's operational mode and will
be discussed in more detail in Chapter 2. Position 10 should be down for normal
operation. The other switch positions on Dipswitch 1 define the TIWAY I
network parameters and are discussed in more detail in Chapter 4.
To select the BDLC protocol as the operating protocol, set position 1 of Dipswitch
1 down as shown in Figure 3–11. With BDLC, the host port parameters are
configured with both dipswitches. Since the data is transferred as 8-bit bytes,
there is no parity bit selection.
DIPSWITCH 1
1
2
3
4
5
6
7
8
9
U
P
MSB
LSB
UNILINK HOST ADAPTER
USER MANUAL
10
KEY
UP DOWN
HOST COMMAND
TIMEOUT
00 = STANDALONE
NM MODE
01 = 10 SEC.
10 = 20 SEC.
11 = 40 SEC.
BDLC ADDRESS
UNUSED
UNUSED
DOWN = BDLC
PROTOCOL
Figure 3–11 BDLC Protocol Dipswitch Settings
DIPSWITCH 2
1
2
3 4
5
6
7
U
P
MSB
UP
= SYNCHRONOUS
DOWN = ASYNCHRONOUS
UP
= FULL DUPLEX
DOWN = HALF DUPLEX
UNUSED
UNUSED
3–14
8
9 10
UP
= TEST MODE
DOWN = RUN MODE
UP
= HIU/EHA &
IO LOOP TEST
LSB
DOWN = MHIU/EHA
HOST PORT BAUD RATE
HOST PORT
HOST PORT
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