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Serial Communications Section 6-3
System Configuration Patterns
Executing Smart Active
Parts Using an NS-series
PT (Sending Internal FINS
Messages)
The CPU Unit converts the FINS messages to CompoWay/F protocol for
sending in this operation.
Note 1. The FINS header contains the following information.
• Remote destination network address (DNA)
• With routing tables that treat serial communications path as a network:
Network address corresponding to serial port in the routing tables.
• Without routing tables that treat serial communications path as a net-
work: Network address for specifying actual remote PLC.
• Remote destination node address (DA1)
• With routing tables that treat serial communications path as a network:
00 hex (local PLC’s internal communications)
• Without routing tables that treat serial communications path as a net-
work: Node address for specifying actual remote PLC
• Remote destination unit address (DA2)
Unit address of serial port
Access from PT on Ethernet or serial NT Link Details Routing tables to
treat serial
communications path
as network
Note When the NS-series PT is connected serially to the PLC using
serial communications mode (1:N NT Links), and the NS-series
PT sends FINS commands encapsulated in NT Link commands
using Smart Active Parts, the CPU Unit removes the NT Link
header, etc. from the received command, converting it to a FINS
command, and transfers the command to the CPU Unit’s serial
port. The CPU Unit uses the Serial Gateway to convert the com-
mand into the specified protocol. This operation enables serially
connected devices to access the CPU Unit’s serial port from
Smart Active Parts using an NS-series PT.
Access via serial com-
munications using
CompoWay/F is possi-
ble from a PT con-
nected to the network
by executing a Smart
Active Part that is con-
nected serially, which
automatically sends an
internal FINS com-
mand.
Optional
2803
NS-series PT
Smart Active Part
FINS header
FINS message (sent internally)
CPU Unit with unit version 3.0 or later
RS-485 (CompoWay/F)
Ethernet
Protocol
conversion
CompoWay/F-compatible
OMRON component
CompoWay/F
command
CompoWay/F
command
CPU Unit
RS-232C port
Peripheral por
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