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33
Connecting Link Adapters and RS-422A Converters
Section 2-3
4.
When the Link Adapter is connected to a C200HX/HG/HE (-ZE), CQM1H,
CS1G/H, CS1G/H-H, or CJ1G model of OMRON PLC as an RS-422A de-
vice, set pins SW1-5 and SW1-6 as indicated below.
Terminal Pin Allocation
The NT-AL001 Link Adapter has a terminal block for an RS-422A/485 inter-
face connection and a connector for an RS-232C interface connection.
The pin allocations for the RS-422A/485 terminal block and the RS-232C con-
nector are as follows.
RS-422A/485 Terminal Block
The CSB and CSA signals are for specialized applications.
Compatible Crimp Terminals
Use crimp terminals for M3 screws.
RS-232C Connector
The connector hood is connected to the RS-422A terminal block’s frame
ground terminal.
5 6
SW1-5
OFF
SW1-6
ON
Pin
Signal name
Code
Signal direction
(Link Adapter
⇔
Device)
8
Request to send (–)
CSA
Link Adapter
→
RS-422A/485 Device
7
Request to send (+)
CSB
Link Adapter
→
RS-422A/485 Device
6
Receive data (–)
RDA
Link Adapter
←
RS-422A/485 Device
5
Receive data (+)
RDB
Link Adapter
←
RS-422A/485 Device
4
Send data (–)
SDA
Link Adapter
→
RS-422A/485 Device
3
Send data (+)
SDB
Link Adapter
→
RS-422A/485 Device
2
Signal ground
SG (GND)
---
1
Functional ground
---
Manufacturer
Style
Model
Compatible wire
J.S.T. Mfg Co., Ltd.
Fork
V1.25-N3A
AWG22 to AWG16
(0.25 to 1.65 mm
2
)
Round
V1.25-MS3
Molex
Fork
VSY1.25-3.5L
AWG22 to AWG16
(0.3 to 1.65 mm
2
)
Round
RAV1.25-3
Pin
Signal name
Code
Signal direction
(RS-232C Device
⇔
Link Adapter)
1
Not used
---
---
2
Send data
SD
RS-232C Device
←
Link Adapter
3
Receive data
RD
RS-232C Device
→
Link Adapter
4
Request to send
(shorted to CS internally)
RS
RS-232C Device
←
Link Adapter
5
Clear to send
(shorted to RS internally)
CS
RS-232C Device
→
Link Adapter
6
+5 V (150 mA) input for Link
Adapter
+5 V
RS-232C Device
→
Link Adapter
7
Data set ready
(shorted to ER internally)
DR
RS-232C Device
→
Link Adapter
7
5
3
1
8
6
4
2
Fork terminal
6.2 mm max.
Round terminal
6.2 mm max.
6
7
8
9
1
2
3
4
5
Summary of Contents for NT20
Page 1: ...Programmable Terminal Cat No V091 E1 01 NT20 USER S MANUAL ...
Page 2: ...NT series Programmable Terminal User s Manual Produced March 2007 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 9: ...x TABLE OF CONTENTS ...
Page 15: ...xvi ...
Page 21: ...xxii EC Directives 6 ...
Page 37: ...16 Before Operating Section 1 6 ...
Page 153: ...132 Transferring the Resource Data Section 3 11 ...
Page 185: ...164 Numeral Setting Section 4 8 ...
Page 267: ...246 Key to Programs Section 6 8 ...
Page 281: ...260 Specifications Appendix A ...
Page 285: ...264 Transporting and Storing PTs Appendix C ...
Page 303: ...282 Function Restrictions Depending on the Support Tool Appendix I ...
Page 307: ...286 Index ...
Page 309: ...288 Revision History ...