LD
Variable Data type Initial value Comment
OperatingEnd BOOL False Processing
completed
Trigger BOOL False Execution con-
dition
Operating BOOL False Processing
WriteDat INT 1234 Write data
ReadDat INT 0 Read data
ReqPath _sRE-
QUEST_P
ATH
(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
RS_instance RS
CIPUCMMWrite_instance CIPUCMMWrite
CIPUCMMRead_instance CIPUCMMRead
CIPUCMMSend_instance CIPUCMMSend
CIPUCMMWrite_instance.Error
CIPUCMMRead
_instance.Busy
OperatingEnd
CIPUCMMWrite_instance.Done
CIPUCMMSend_instance.Error
CIPUCMMRead_instance.Error
Trigger
CIPUCMMWrite
_instance.Busy
CIPUCMMSend
_instance.Busy
OperatingEnd
Set Q1
R
eset1
RS_instance
R
S
CIPUCMMRead_instance.Done
CIPUCMMSend_instance.Done
Operating
Determine if instruction execution is completed.
Accept trigger.
8 CIP Message Communications
8-23
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
8-2 CIP Message Communications Client Function
8
8-2-7 Sample Programming for CIP Connectionless (UCMM) Message
Communications