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2-7
Section
Connection to a PC by the NT Link (1:N)
53
The actual wiring and settings depend on the system configuration, as shown
below.
[When the PC connection is RS-232C]
PC
(RS-232C)
RS-232C
cable
Terminal
resistor set
NT-
AL001
RS-485 cable
Same settings for same equipment
RS-485 cable
RS-485
cable
No terminal
resistor
RS-232C
cable
RS-232C
cable
NT-
AL001
Terminal
resistor set
NT-
AL001
NT620S/
NT620C
NT620S/
NT620C
[When the PC connection is RS-485]
Terminal resistance set
PC
(RS-485)
(Communication port)
Same settings for same equipment
RS-485
cable
RS-485 cable
RS-485 cable
NT620S/
NT620C
NT-
AL001
RS-232C
cable
No terminal
resistor
NT-
AL001
RS-232C
cable
Terminal
resistance set
NT620S/
NT620C
- RS-232C Cable Wiring
Same as described in “RS-422A Cables” on page 51.
- RS-485 Cable Wiring
PC or NT-AL001
Abbrev.
Functional
ground
RS-422A
PC or NT-AL001
SDA
SDB
RDA
RDB
Abbrev.
Functional
ground
RS-422A
SDA
SDB
RDA
RDB
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: ......
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