100
Wiring Section 3-3
is not required for a Link Adapter connected to a Serial Communications
Board or Unit because power is supplied from pin 6 of the connector.
4. The maximum cable length for RS-232C is 15 m. The RS-232C standard,
however, does not cover baud rates above 19.2 Kbps. Refer to the manual
for the device being connected to confirm support.
Connection Examples
The connection examples in the remainder of this section show only the basic
connection diagrams. We recommend that appropriate noise countermea-
sures be taken in actual applications, including the use of shielded twisted-
pair cables. Refer to 3-4 RS-232C and RS-422A/485 Wiring for actual wiring
methods.
Host Computer
Connections
1:1 Connections Using RS-232C Ports
IBM PC/AT or Compatible Computers
Using NT-AL001-E Converting Link Adapters
Note We recommend using the following NT-AL001-E Link Adapter Connecting
Cables to connect to NT-AL001-E Link Adapters.
XW2Z-070T-1: 0.7 m
XW2Z-200T-1: 2 m
Serial Communications
Board or Unit
RS-232C
interface
Pin
Signal
D-sub, 9-pin
connector (male)
SignalPin
RS-232C
interface
D-sub, 9-pin
connector (male)
Computer
FG
SD
RD
RTS
CTS
5V
DSR
DTR
SG
CD
RD
SD
DTR
SG
DSR
RTS
CTS
CI
5-V (+)
power (-)
D-sub, 9-pin
connector (male)
NT-AL001-E Link Adapter
Shield
RS-232C
Interface
RS-232C
Interface
Signal
SignalPin
DIP Switch Settings
Pin 1: ON
Pin 2: ON
(terminating resistance)
Pin 3: OFF
Pin 4: OFF
Pin 5: OFF
Pin 6: OFF
NT-AL001-E Link Adapter
RS-232C
PinPin
Pin
PinSignal Signal Signal
Signal
Serial Communications
Board or Unit
Computer
RS-422A
(See note)
D-sub, 9-pin
connector (male)
DIP Switch Settings
Pin 1: ON
Pin 2: ON
(terminating resistance)
Pin 3: OFF
Pin 4: OFF
Pin 5: OFF
Pin 6: ON
D-sub, 9-pin
connector (male)
D-sub, 9-pin
connector (male)
Terminal block
RS-232C
FG
SD
RD
RTS
CTS
DSR
DTR
SG
NC
SD
RD
RTS
CTS
5V
DSR
DTR
SG
NC
SD
RD
RTS
CTS
5V
DSR
DTR
SG
FG
SD
RD
RTS
CTS
5V
DSR
DTR
SG
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