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Serial Gateway Overview Section 3-6
Conditions Requiring Routing Tables According to Target
Specifying Address in FINS Command Source
Note To access from a CX-Programmer, Select Change PLC - Serial Gateway
Guide, and enter the actual Host Link unit number, The CX-Programmer will
automatically increment the value by one.
3-6-8 Using a PLC as the Target
Network-to-Serial Conversion
Routing tables are required to enable the serial communications path to be
treated as a network.
Target Protocol
conversion
Case Example Routing tables
for treating
serial
communications
path as network
PLC (CS/CJ/CP/NSJ Series, CVM1/
CV Series)
Host Link
FINS
Routing FINS network including
serial communications path (for
Serial Gateway)
Network-to-
serial con-
version
Required
Serial communications path con-
nection only
Serial-to-
serial con-
version
Optional
Any component
except PLC
OMRON Compo-
nent
CompoWay/
F
Routing FINS network including
serial communications path (for
Serial Gateway)
Network-to-
serial con-
version
Optional
Modbus-RTU
Slave (including
OMRON Inverter)
Modbus-
RTU
Serial communications path con-
nection only
Serial-to-
serial con-
version
Optional
Modbus-ASCII
Slave
Modbus-
ASCII
Target Protocol
conversion
Routing
tables for
treating
serial com-
munica-
tions path
as network
FINS header
Remote network
address
Remote node
address
Remote unit
address
PLC (CS/CJ /CP/NSJ
Series, CVM1/CV Series)
Host Link
FINS
Created Network address
assigned to the
serial port accord-
ing to the routing
tables
Host Link unit num-
ber incremented by
1 (1 to 32)
(See note.)
Must be the actual
unit address of the
destination unit.
Not created Serial port unit
address
Any compo-
nent except
PLC
OMRON
Component
CompoWay/
F
Created Network address
assigned to the
serial port accord-
ing to the routing
tables
00 hex (indicates
communications in
local PC)
Must be the unit
address of the serial
port.
Modbus-
RTU Slave
(including
OMRON
Inverter)
Modbus-
RTU
Not created Network address for
specifying the
actual remote PC
Node address for
specifying the
actual remote PC
Modbus-
ASCII Slave
Modbus-
ASCII
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