Appendix 5 Preparing Connecting Cables 
A-5-4 Preparing Connecting Cables for Host Connection  
Refer to the following information when preparing the connecting cables for connecting the 
PT to the host. 
 
● Wiring Layout between PT and Host (RS-232C) 
9-pin connector 
Connector 
food 
Signal 
PT Host
Shield
Signal 
Pin No.
Connector 
food 
Pin No.
RS-
232C 
conn
ector 
RS-
232C 
conn
ector
9-pin connector 
 
● Wiring Layout between NS-AL002 and Host (RS-422A) 
 
Host 
NS-AL002
RS-422A cable 
 
When connecting individual signals with twisted-pair cable, connect RDA and RDB, and 
SDA and SDB, as pairs in the twisted-pair cable. A communications error may occur if the 
pairs are not combined correctly. 
 
 
 
A-33