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5-4SectionUsing Protocol Macros
71
Port Schematic diagramConfiguration
RS-422A/485 1:N
RS-422A/485
RS-232C interface
RS-422A/485
Resistance ON
RS-422A/485 interface
RS-422A/485 interface
3G2A9-AL001
Resistance
ON
Resistance
ON
Resistance ON
NT-AL001-E
RS-232C
RS-232C
RS-232C
Resistance ON
5-V power
Resistance
ON
RS-422A/485
Note 1. The maximum cable length for RS-232C is 15 m.
2. The maximum combined cable length for RS-422A/485 is 500 m including
branch lines.
3. The maximum cable length is limited to 2 m when an NT-AL001-E Link
Adapter is connected.
4. Branch lines must be a maximum of 10 m long.
Connection Examples
The connection examples in the remainder of this section show only the basic
connection diagrams. We recommend that appropriate noise countermeasures
be taken in actual applications, including the use of shielded twisted-pair cables.
Refer to 2-3 Wiring for actual wiring methods.
Connecting RS-232C Ports 1:1
Connections to E5CK Controller
Serial Communications
Board
RS-232C
Shield
OMRON E5CK Controller
Terminal
Signal
Pin
Signal
D-sub, 9-pin
connector (male)
FG
SD
RD
RTS
CTS
DSR
DTR
SG
SD
RD
SG
Terminal block