Omron NJ501-1300 - Page 188

8 Message Communications
8-16
NJ-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
ST
// Start sequence when
Tr ig ge r changes to TRUE.
IF ((Trigger=TRUE) AND (DoUCMMTrigger=FALSE) AND (_Eip_EtnOnlineSta=TRUE))
THEN
DoUCMMTrigger :=TRUE;
Stage :=INT#1;
CIPUCMMWrite_instance(
Execute :=FALSE, // Initialize instance.
SrcDat :=WriteDat); // Dummy
CIPUCMMRead_instance( // Initialize instance.
Execute :=FALSE, // Dummy
DstDat :=ReadDat); // Dummy
CIPUCMMSend_instance(
Execute :=FALSE, // Initialize instance.
ServiceDat := Dummy, // Dummy
RespServiceDat :=RespDat); // Dummy
END_IF;
IF (DoUCMMTrigger=TRUE) THEN
CASE Stage OF
1 : // Request writing value of variable.
CIPUCMMWrite_instance(
Execute :=TRUE,
RoutePath :='02\192.168.250.2', // Route path
TimeOut :=UINT#20, // Timeout value
DstDat :='WritingDat', // Source variable name
Size :=UINT#1, // Number of elements to write
SrcDat :=WriteDat); // Write data
IF (CIPUCMMWrite_instance.Done=TRUE) THEN
Stage :=INT#2; // Normal end
ELSIF (CIPUCMMWrite_instance.Error=TRUE) THEN
Stage :=INT#10; // Error end
Internal
Variables
Variable Data type Initial value Comment
Trigger BOOL False Execution condition
DoUCMMTrigger BOOL False Processing
Stage INT 0 Status change
WriteDat INT 0 Write data
ReadDat INT 0 Read data
ReqPath _sREQUEST_
PATH
(ClassID:=0, InstanceID:=0,
isAttributeID:=False, AttributeID:=0)
Request path
ResDat ARRAY[0..10] OF
BYTE
[11(16#0)] Response data
Dummy BYTE 16#0 Dummy
CIPUCMMWrite_instance CIPUCMMWrite
CIPUCMMRead_instance CIPUCMMRead
CIPUCMMSend_instance CIPUCMMSend
External
Variables
Variable Data type Constant Comment
_EIP_EtnOnlineSta BOOL Online