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Host Connections by RS-232C (NT20-ST128)
Section 2-8
2-8
Host Connections by RS-232C (NT20-ST128)
Connect the NT20-ST128 with an RS-232C Interface Unit installed to the host
computer with an RS-232C cable.
An RS-232C connection allows a single NT20 to be connected to the host.
A computer or other control device with a built-in RS-232C interface is a suit-
able host for connection to the NT20.
2-8-1
Host Computer Communications Settings
Set the host communications conditions according to the following table.
Note
Set the same communications conditions at the NT20 and Host.
Refer to the appropriate instruction manuals for the method of setting the Host
communications conditions.
Set to the maximum baud rate supported by both the NT20 and Host.
The communications condition settings of the NT20-ST128 are set with the
RS-232C communications conditions memory switches.
2-8-2
Connector Pin Arrangement
The RS-232C connection between the NT20 and Host is described below.
NT20 Interface Unit
The connector specifications are described below.
Electrical characteristics: Conforms to EIA RS-232C specifications.
Signal direction: Signal input and output are relative to the host computer.
Item
Setting
Baud rate
Set to the same baud rate as the NT20: 2400, 4800, 9600, 19200
Data bits
7 bits/8 bits
Stop bits
1 bit/2 bits
Parity
Even, Odd, None
Flow control
RS/CS control
XON/XOFF control
None
Connector
pin #
Signal name
Abbreviation
Signal direction
NT20
← →
Host
2
Send data
SD (TXD)
→
3
Receive data
RD (RXD)
←
4
Request to send
RS (RTS)
→
5
Clear to send
CS (CTS)
←
1
5
6
9
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 ...