Omron Sysmac NJ-series

8-31
8 CIP Message Communications
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
8-2 CIP Messaging Communications Client Function
8
8-2-8 Sample Programming for CIP Connection (Class 3) Message Communications
ST
*1 For an NX701 CPU Unit, replace the variable with _EIP1_EtnOnlineSta (Port1 Online) or _EIP2_EtnOnlineSta
(Port2 Online), depending on the built-in EtherNet/IP port which is used.
For an NX1P2 CPU Unit, replace the variable with _EIP1_EtnOnlineSta (Port1 Online).
// Start sequence when Trigger changes to TRUE.
IF ((Trigger=TRUE) AND (DoCIPTrigger=FALSE) AND (_EIP_EtnOnlineSta=TRUE))THEN
DoCIPTrigger:=TRUE;
Stage :=INT#1;
CIPOpen_instance(Execute:=FALSE); // Initialize instance.
CIPWrite_instance(
Execute :=FALSE, // Initialize instance.
SrcDat :=WriteDat); // Dummy
CIPRead_instance( // Initialize instance.
Execute :=FALSE, // Dummy
DstDat :=ReadDat); // Dummy
CIPSend_instance(
Execute :=FALSE, // Initialize instance.
ServiceDat := Dummy, // Dummy
RespServiceDat :=RespDat); // Dummy
CIPClose_instance(Execute:=FALSE); // Initialize instance.
END_IF;
Internal
Variables
Variable Data type Initial value Comment
Trigger BOOL False Execution condition
DoCIPTrigger BOOL False Processing
Stage INT 0 Status change
WriteDat INT 1234 Write data
ReadDat INT 0 Read data
ReqPath _sREQUEST_
PATH
(ClassID:=0, InstanceID:=0,
isAttributeID:=False, AttributeID:=0)
Request path
RespDat ARRAY[0..10] OF
BYTE
[11(16#0)] Response data
Dummy BYTE 16#0 Dummy
CIPOpen_instance CIPOpen
CIPWrite_instance CIPWrite
CIPRead_instance CIPRead
CIPSend_instance CIPSend
CIPClose_instance CIPClose
External
Variables
Variable Data type Constant Comment
_EIP_EtnOnlineSta
*1
BOOL Online