Omron NX502-1 Series User Manual page 55

Sample Programming
In this sample, the SendCmd instruction sends CPU UNIT DATA READ command from the network
No. 0, node No. 2, Unit No. 0 and receives the data.
ST
Internal
Varia-
bles
Trigger
DoFinsTrigger
SendCmdExecute
State
InDNetAdr
InOption
CmdDat
RespDat
SendCmdInstance SendCmd
External variable
IF ( (Trigger=TRUE) AND (DoFinsTrigger=FALSE) AND (_Port_isAvailable=TRUE) ) THEN
State:= 1;
DoFinsTrigger:=TRUE;
SendCmdExecute := FALSE; // Send execution status
InDNetAdr.NetNo :=USINT#0; // Set network address.
InDNetAdr.NodeNo :=USINT#2;
InDNetAdr.UnitNo :=BYTE#16#0;
InOption.isNonResp :=FALSE; // Set response.
InOption.TimeOut :=UINT#20;
InOption.Retry :=USINT#2;
NX-series CPU Unit FINS Function User's Manual (W596)
Node address 1
CPU UNIT DATA READ
Name Data type
BOOL
BOOL
BOOL
SINT
_sDNET_ADR
_sRESPONSE
ARRAY[0..1] OF
BYTE
ARRAY[0..1023] OF
BYTE
Name Data type
_Port_isAvailable BOOL
Node address 2 Unit No. 0
Ethernet cable
Initial value
FALSE
FALSE
FALSE
0
NetNo:=0, NodeNo:=0,
UnitNo:=16#0
isNonResp:=FALSE,
TimeOut:=0, Retry:=0
[2(16#0)]
[1024(16#0)]
Comment
Network Communications Instruction Enabled Flag
3 Client Function
Comment
Execution condition
Processing
SendCmd instruction execu-
tion flag
Sample programming status
Network address at send
destination
Response
Send data
Receive data
SendCmd instance
3-17
3