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2-6
Section
Connection to a PC by the NT Link (1:1)
47
S
RS-232C/RS-422 converter unit (NT-AL001)
When an NT620S/NT620C is connected in an RS-422A type 1:1 connection, set
the DIP switches of the RS-232C/RS-422A converter unit (NT-AL001) used as a
relay as follows.
(Factory settings)
Setting for built-in terminal resistor
(DIP switch SW1-2)
Set SW1-2 to “ON”.
(Setting for “set built-in terminal resistor”)
Selection of 2-wire type/4-wire type
(DIP switches SW1-3, SW1-4)
Set both SW1-3 and SW1-4 to “OFF”.
(Setting for “4-wire type”)
Selection of RS-422A transmission mode
(DIP switches SW1-05, SW1-6)
Set both SW1-5 and SW1-6 to “OFF”.
(Setting for “continuous transmission”)
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...
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Page 5: ...vi...
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