Omron SYSMAC NX-CIF101 User Manual

A - 41
Appendices
NX-series Communications Interface Units User’s Manual (W540)
A-4 Programming Samples
A
A-4-4 Programming Sample 3: Receiving Data
// Initialize program status using establishing communications as the trigger.
InitialRequestTrigger_R_TRIG_instance(
E001_NX_Unit_I_O_Data_Active_Status_125[1],
InitialRequestTrigger);
IF( InitialRequestTrigger = TRUE ) THEN
RcvInitialize := FALSE;//Initialize.
END_IF;
//See if I/O communications are enabled and if Input SID was updated.
IF ( ( E001_NX_Unit_I_O_Data_Active_Status_125[1] = TRUE )
AND ( N1_Ch1_Input_SID_Response <> N1_Ch1_Input_SID) ) THEN
IF ((N1_Ch1_Receive_Data_Error_Flag = TRUE ) //Process (1)
OR (RcvError = TRUE))THEN
//If a receive data error is detected,
//skip the receive data until the end of the serial data is detected.
RcvSize := UINT#0;
RcvError := TRUE;
//Set the Input SID Response.
N1_Ch1_Input_SID_Response := N1_Ch1_Input_SID;
ELSIF ((N1_Ch1_Receive_Data_Flag = TRUE ) OR // Process (2)
(N1_Ch1_Receive_Last_Data_Flag = TRUE )) THEN
//When there is no receive data error and there is input data
IF( RcvInitialize=FALSE) THEN
//Initialize reception process.
RcvSize := UINT#0;
RcvInitialize := TRUE;
RcvDone:=FALSE;
END_IF;
//Get receive data.
//Set the RcvDat array to the following size: Maximum receive data 
//size [bytes] + Input divided data size [bytes]
AryMove(N1_Ch1_Input_Data_01[0], RcvDat[RcvSize], UINT#4);
AryMove(N1_Ch1_Input_Data_02[0], RcvDat[RcvSize+4], UINT#4);
AryMove(N1_Ch1_Input_Data_03[0], RcvDat[RcvSize+8], UINT#4);
AryMove(N1_Ch1_Input_Data_04[0], RcvDat[RcvSize+12], UINT#4);
AryMove(N1_Ch1_Input_Data_05[0], RcvDat[RcvSize+16], UINT#4);
RcvSize:=RcvSize+N1_Ch1_Input_Data_Length;
//Set the Input SID Response.
N1_Ch1_Input_SID_Response := N1_Ch1_Input_SID;
END_IF;
// Check for final data. // Process (3)
IF (N1_Ch1_Receive_Last_Data_Flag = TRUE ) THEN
IF( RcvError = FALSE ) THEN
//If there is no reception error and the final data is obtained
RcvDone:=TRUE; //End reception.
END_IF;
RcvError := FALSE;
RcvInitialize := FALSE;
END_IF;
END_IF;
ST Program

Omron SYSMAC NX-CIF101 Specifications

General

Compatible Series	NX Series
Power Supply	24 VDC
Mounting Type	DIN Rail
Communication Standard	Ethernet
Model	NX-CIF101
Manufacturer	Omron
Communication Protocol	Ethernet/IP
Series	NX
Category	Communication
Function	Ethernet communication

Summary

Features and System Configuration

Features of Communications Interface Units

Describes the features of Communications Interface Units.

Unit Models, Functions, and Support Software

Serial Communications Instructions for the CIF Units

Specifications and Application Procedures

Specifications

Provides general and individual unit specifications for CIF Units.

Part Names and Functions

Installation and Wiring

Connecting the Power Supply and Ground Wires

Guides on wiring power supply and ground for CIF Units.

Wiring the Terminals

Explains how to wire terminals on CIF Units.

Wiring Communications

Details how to wire CIF Units for communications.

I/O Data Specifications

I/O Data Specifications for NX-CIF101 and NX-CIF105

Details I/O data specifications for NX-CIF101 and NX-CIF105.

I/O Data Specifications for NX-CIF210

Details I/O data specifications for NX-CIF210.

Unit Settings

Unit Operation Settings

Covers communications specifications, transmission buffering, and event levels.

Unit Operation Setting Procedure

Setting the Divided Data Size

Serial Communications

No-protocol Communications

How Data Is Sent and Received

Data Used by the Serial Communications Protocol

Examples of Communications between CPU Unit or Communications Master and CIF Unit

Provides examples of data transfer between CPU/master and CIF Unit.

User Programming to Send Data

User Programming to Receive Data

User Programming to Restart a Port

Communications Performance

Explains how to calculate and improve communications performance.

Adjusting Divided Data Sizes to Improve Communications Performance

Guides on optimizing divided data sizes for better communication performance.

Processing When the Send Buffer or Receive Buffer Becomes Full

Serial Line Monitor

How the Serial Line Monitor Works

Support Software Operations

Starting and Stopping Monitoring and Displaying Monitor Data

Troubleshooting

How to Check for Errors

Methods for checking errors using indicators or support software.

Checking for Errors with the Indicators

Explains how to interpret TS indicator status for errors.

Checking for Errors and Troubleshooting on the Support Software

Details error checking and troubleshooting using support software.