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Section 2-6
RS-485 connection
C200HX/HG/HE
OMRON PC
While controlling machinery and
monitoring lines, controls the
NT600S units when necessary.
C200H/HG/HE can be used.
RS-232C cable
(max. length: 2 m), or
directly connected
RS-485 cable
RS-232C/RS-422A
converter unit,
type NT-AL001
RS-232C/RS-422A
converter unit,
type NT-AL001
RS-232C/RS-422A
converter unit,
type NT-AL001
RS-232C/RS-422A
converter unit,
type NT-AL001
RS-485 cable (*) RS-485 cable (*) RS-485 cable (*) RS-485 cable (*)
RS-232C cable
(max. length: 2 m)
RS-232C cable
(max. length: 2 m)
RS-232C cable
(max. length: 2 m)
RS-232C cable
(max. length: 2 m)
NT600S NT600S NT600S NT600S
(*) Total cable length: 500m
RS-232C/RS-422A
converter unit,
type NT-AL001
[RS-232C Cable Wiring]
Same as for an RS-422A connection. Refer to “RS-422A connection” (page 50).
[RS-485 Cable Wiring]
NT-AL001 to NT-AL001
3
4
5
6
Pin No.Abbrev.
SDB
SDA
RDB
RDA
RS-422A
terminal
block
Shielding
wire
NT-AL001 NT-AL001
RS-422A
terminal
block
Pin No. Abbrev.
1
3
4
5
6
SDB
SDA
RDB
RDA
Functional
ground
Functional
ground
1
PC to NT-AL001
Abbrev.
SDA (--)
SDB (+)
RS-422A
interface
Shielding
wire
PC NT-AL001
RS-422A
terminal
block
Pin No. Abbrev.
1
3
4
SDB
SDA
Connector
cover
Connector
cover