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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
)
Summary of Contents for NT20S
Page 1: ...Cat No V020 E1 04 NT20S Programmable Terminal OPERATION MANUAL ...
Page 2: ...i ...
Page 3: ...ii ...
Page 4: ...iii NT series Programmable Terminal Operation Manual Revised August 1997 ...
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Page 7: ...vi ...
Page 11: ...x ...
Page 19: ...xviii ...
Page 129: ...110 ...
Page 169: ...150 ...
Page 253: ...234 ...