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6-15
6 Message Communications
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
6-2 Send
ing
E
x
plicit Messa
g
e
s
6
6-2-2 Sending Explicit Messages
Using Send
Cmd Instr
u
ctio
n
Precautions for Correct Use
Precautions for Correct Use
The message service function does not guarantee that a given message will reach the remote
node. Messages may be lost during communication due to noise, etc. When the message ser-
vice function is used, normally the node that issues an instruction performs resend to avoid the
above condition. With the SendCmd instruction, the resend process is performed automatically
when the number of resends is specified. For the number of resends, be sure to specify a value
other than 0.
Summary of Contents for CJ1W-DRM21
Page 12: ...Manual Structure 10 CJ series DeviceNet Units Operation Manual for NJ series CPU Unit W497 ...
Page 42: ...Revision History 40 CJ series DeviceNet Units Operation Manual for NJ series CPU Unit W497 ...
Page 345: ...Index 1 CJ series DeviceNet Units Operation Manual for NJ series CPU Unit W497 I Index ...
Page 349: ......