2-1 Connecting the Host 
Supported communications 
methods 
PT 
commu-
nications 
type 
Host 
com-
munica-
tions 
type 
Supported connection methods 
1:1 NT 
Link 
1:N NT 
Links 
FINS 
Data 
Links
Refer-
ence 
page 
RS-232C, 
Controller 
Link 
RS-
232C, 
Control-
ler Link 
Host
PT
Serial port A
RS-232C cable
Host
Controller Link
Controller Link
Interface Unit
Specified shielded twisted-pair cable
Yes Yes Yes Yes 
P.4-2 
P.4-10 
P.5-15 
Ethernet, 
Controller 
Link 
Ethernet, 
Control-
ler Link 
Host
PT
Ethernet
Host
Specified shielded twisted-pair cable
10BASE-T/100BASE-T
Twisted-pair cross cable
Controller Link
Controller Lin
 
No No Yes Yes 
 
P.5-2 
P.5-15 
Yes: Connection is possible.    No: Connection is not possible. 
Note: Only when a Controller Link Interface Unit (NS-CLK21) is mounted. 
 
• 
• 
The NS-AL002 is connected directly to the serial port of the PT and power is supplied 
from pin 6 of the port. 
When there are multiple serial ports and Ethernet Units for a single host, each port can 
be used to communicate with separate PTs. This type of communications method, 
however, will reduce the communications performance at the host.  
2-6