Omron NT20S User Manual

51
Connection to a PC by the NT Link (1:N)
Section 2-6
Converter Unit Connector Specifications
The terminal block specifications of the RS-232C/RS-422A converter unit are indi-
cated here. For details on the method for making the connection cable, refer to
“Making the Cable” (page 265).
NT-AL001 RS-422A terminal block specifications
S Connected terminal block RS-422A terminal block (M3 screws)
S Electrical characteristics Conform to EIA RS-422A
S Signal direction Signal input and output is relative to the NT-AL001.
Terminal
Block Pin
Signal Name
Abbreviation
Signal Direction
Block Pin
No.
Signal Name Abbreviation
Input Output
8 Request to send (*) CSA Ę
7 Request to send ()) CSB Ę
6 Receive data (*) RDA Ę
5 Receive data ()) RDB Ę
4 Send data (*) SDA Ę
3 Send data ()) SDB Ę
2 Signal ground SG (GND) * *
1 Functional ground * *

The CSA and CSB signals are for special applications.
Terminal Screws and Crimp Terminals
The terminal screws are M3 screws. Use M3 size crimp terminals. Tighten the ter-
minal screws with a torque of 0.4 N·m.
Note: During wiring, crimp terminals must be used for connections.
[Recommended crimp terminals]
Fork Type Round Type
6.2mm or less 6.2mm or less
Maker Type Recommended Wire Size
Japan Solderless
Terminal MFG
1.25-N3A (Fork)
AWG22 to 18
(
0.3 to 0.75mm
2
)
Molex Y1.25-3.5L (Fork)
AWG22
to
18
(0
.
3
to
0
.
75mm
2
)

Omron NT20S Specifications

General

Brand	Omron
Model	NT20S
Category	Touch terminals
Language	English