
CONFIGURING THE HOST COMPUTER PORT
UNILINK HOST
ADAPTER3–3
USER MANUAL
Table 3–1 RS–232–C/RS–423–A “D” Connector PinAssignmentInterchange
Circuit Connector
Pin No.
CCITT Description
AA 1 101
Protective Ground
Signal Ground
T
ransmitted Data
Recieve Data
Request
T
o Send
Clear
T
o Send
Data Set Ready
Data
T
erminal Ready
Recieve Line Signal
Detector
T
ransmitter Signal
Element
Timing
Reciever Signal
Element
Timing
102
103
104
105
106
107
108/2
109
114
115
7
2
3
4
5
6
20
8
15
17
AB
BA
BB
CA
CB
CC
CD
CF
DB
DD
Since
the adapter will typically be operating in noisy industrial environments,
it is recommended that the cable length not exceed 50 feet.
3.2.1
Connection to DCE Equipment
Port
3 is configurable for synchronous or asynchronous modem operation, even,
odd,
or no parity
, and baud rates up to 38.4K bits per second. These parameters
are
configured using the two dipswitch banks shown in Figure 3–3. The actual
settings
are described in more detail in Paragraph 3.3.1.1.
LEDsResetNumber
2
Number 1
Figure 3–3 Dipswitch Locations