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80
Host Connections by RS-232C (NT20-ST128)
Section 2-8
Note
Unlisted pins are not used.
Note
For cable parts and the wiring method, refer to
Appendix C Transporting and
Storing PTs
on page 263.
Connecting to the Host
Computer
Use a cable that is compatible with the RS-232C connector of the host to con-
nect the NT20 and the host (see the example in the figure below).
In the example shown here, the cable connects the 9-pin connector of the
NT20 and 25-pin connector of the host. If the host has a 9-pin RS-232C con-
nector, use an RS-232C cable with 9-pin connectors at both ends.
!Caution
When making the connection, turn OFF the power to the NT20 and PLC
before disconnecting or connecting any connector.
!Caution
After connecting the communications cable, always secure it with the screws.
Otherwise the cable may disconnect, causing operation to fail.
Note
If using the +5 V supply of pin No.6, check first that the equipment that is to
receive the supply has a current capacity no greater than 150 mA. The +5 V
output of the NT20 is +5 V DC
±
5%, 150 mA max.
Do not use both port’s +5 V output at the same time.
6
+5 V output, 150 mA
max.
+5 V
→
9
Signal ground
SG (GND)
---
Connector
pin #
Signal name
Abbreviation
Signal direction
NT20
← →
Host
NT20
25-pin connector
Host Interface connector
(RS-232C, 9-pin type)
9-pin connector
RS-232C cable
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 ...