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Serial Communications Section 6-3
System Configuration
Note Refer to OMRON’s Smart Library website for the most recent information on
using SAPs and function blocks.
Serial Gateway Function
When a FINS command is received, it is automatically converted to the proto-
col corresponding to the message and sent on the serial communications
path. Responses are also converted in the same way.
Note Serial ports 1 and 2 on the CP1L CPU Unit can be used to convert to the fol-
lowing protocols.
• CompoWay/F
•Modbus-RTU
This functionality is enabled when the serial communications mode is set to
Serial Gateway.
Using SAPs from an NS-series PT Using Function Blocks in CPU Unit
OMRON components that support CompoWay/F or
Modbus-RTU slave functionality
NS-series PT
Smart Active Parts
RS-232C
XW2Z-200T/500T Cable
CP1L CPU Unit
RS-422A/485 Option Board
RS-232C Option Board
CPU Unit functions as a gateway
RS-422A/485 (CompoWay/F or Modbus-RTU)
OMRON components that support CompoWay/F or Modbus-
RTU slave functionality
FB
User program
Function block
CP1L CPU Unit
RS-422A/485 Option Board
RS-422A/485 (CompoWay/F or Modbus-RTU)
2804
2803
The serial gateway functionality is enabled when serial port 1 or 2 is set to
the Serial Gateway Mode.
FINS message (on network or CPU bus)
FINS header CompoWay/F command
FINS header
Modbus-RTU command
Serial port 1 or
2 on CPU Unit
(Serial port 1 or 2)
CompoWay/F command
Modbus-RTU command
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