Appendix G
Method for Making the Cable for Connection to the PC
308
Connecting an NT620S/NT620C to an RS-232C/RS-422 Converter Unit (NT-AL001)
Connecting to an RS-232C/RS-422 converter unit allows transmissions over distances greater than 15 m (maxi-
mum of 500 m).
NT620S/NT620C
NT-AL001
RS-232C
RS-422A
Max. 2 m
Max. 500 m
Host
Reference
When connecting a C200HX/HG/HE and an RS-232C/RS-422 converter unit,
use a converter unit whose lot number is 15Y5 or higher. Converter units of lot
numbers previous to 15Y5 cannot be connected.
NT-AL001 RS-232C Connector Specifications (9-pin Type)
Electrical characteristics : Conform to EIA RS-232C
Signal direction : Signal input and output is relative to the NT-AL001.
Connector Pin
No
Signal Name
Abbreviation
Signal
Direction
No.
Signal Name
Abbreviation
Input
Output
Connector
cover
Grounding or earth for safety
purposes
FG
–
–
2
Send data
SD(TXD)
f
3
Receive data
RD(RXD)
f
4
Request to send
RS(RTS)
f
5
Clear to send
CS(CTS)
f
6
+5V input
)
5V
f
9
Signal ground
SG(GND)
–
–
NT-AL001 RS-422A terminal block specifications
Connected terminal block : RS-422A terminal block (M3 screws)
Electrical characteristics : Conform to EIA RS-422A
Signal direction : Signal input and output is relative to the NT-AL001.
Terminal Block
Pin No
Signal Name
Abbreviation
Signal
Direction
Pin No.
Signal Name
Abbreviation
Input
Output
8
Request to send A
CSA (CS–)
f
7
Request to send B
CSB (CS+)
f
6
Receive data A
RDA (RD–)
f
5
Receive data B
RDB (RD+)
f
4
Send data A
SDA (SD–)
f
3
Send data B
SDB (SD+)
f
2
Signal ground
SG
–
–
1
Functional ground
FG
–
–
Note
The CSB and CSA signals are for special applications.
Summary of Contents for NT620C
Page 1: ...Cat No V033 E1 5 Programmable Terminals NT620S 620C OPERATION MANUAL...
Page 2: ...NT620S 620C Programmable Terminals Operation Manual Revised April 2001...
Page 3: ...iv...
Page 5: ...vi...
Page 328: ......
Page 329: ......
