Instructions Used For Option Boards - Omron NX-series User Manual

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Instructions Used for Option Boards

The table below shows serial communications instructions that you can use when the Serial communi-
cations mode of a Serial Option Board is Modbus-RTU Master or No-Protocol.
Instruction
NX_SerialSend
NX_SerialRcv
NX_Modbus
RtuCmd
NX_Modbus
RtuRead
NX_Modbus
RtuWrite
NX_SerialSigCtl
NX_SerialSigRead
NX_Serial
StatusRead
NX_SerialBufClear
Refer to the NJ/NX-series Instructions Reference Manual (Cat. No. W502-E1-17 or later) for details on
serial communications instructions.
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User's Manual (W579)
Name
Send No-Protocol Data
Receive No-Protocol Data
Send Modbus RTU General
Command
Send Modbus RTURead
Command
Send Modbus RTUWrite
Command
Serial Control Signal ON/OFF
Switching
Read Serial Control Signal
Read Serial Port Status
Clear Buffer
Outline of function
Sends data in No-Protocol Mode from a serial port on a
CIF Unit or Option Board.
Reads data in No-Protocol Mode from a serial port on a
CIF Unit or Option Board.
Sends general commands from a serial port on a CIF Unit
or Option Board to Modbus-RTU slaves using Mod-
bus-RTU protocol.
Sends read commands from a serial port on a CIF Unit or
Option Board to Modbus-RTU slaves using Modbus-RTU
protocol.
Sends write commands from a serial port on a CIF Unit or
Option Board to Modbus-RTU slaves using Modbus-RTU
protocol.
Turns ON or OFF the ER or RS signal of a serial port on a
CIF Unit or Option Board.
Reads the CS or DR signal of a serial port on an Option
Board.
Reads the status of a serial port on an Option Board.
Clears the send or receive buffer.
3 Option Boards
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