Omron CJ - REFERENCE MANUAL 10-2009 Reference Manual page 926

3. Instructions
Normal End
An explicit message is sent and a normal response is returned.
The corresponding Explicit Communications Error Flag (A213.00 to A213.07: Communications ports 0
to 7) will be OFF and the Communications Port Completion Code (A203 to A210: Communications
ports 0 to 7) will contain the explicit message normal completion code of 0000 hex.
CPU Unit
FINS header
FINS header FINS response
Communications Flags
Communications Port
Enabled Flag
Explicit Message
Instruction
Explicit Communications
Error Flag
Communications Port
Error Flag
Communications Port
Completion Code
Error End
There are two possibilities for error ends, as described in the next two subsections.
a) When the Explicit Message Could Not Be Sent
In this case, the explicit message was never sent on the network, e.g., because the network was not
running. Here, both the Explicit Communications Error Flag (A213.00 to A213.07: Communications
ports 0 to 7) and the Communications Port Error Flag (A219.00 to A219.07: Communications ports 0 to
7) will turn ON.
After completion, the Communications Port Completion Code (A203 to A210: Communications ports 0
to 7) will contain the FINS message error code.
CPU Unit
FINS header
FINS header FINS response
888
PLC Rack
OK
Explicit message
OK
Explicit response
1
0
Instruction
being executed
1
0
1
0
Previous 0000 hex 0000 hex
(normal end)
PLC Rack
OK
Explicit message
Error
Explicit response
FINS error response No explicit response
DeviceNet network
Explicit message sent
CPU Bus
Explicit message
Unit
(e.g.,
DeviceNet
Unit)
Explicit response
Normal explicit response
received
Instruction
being executed
0000 hex
DeviceNet network
FINS error
Explicit message not sent
CPU Bus
Unit
(e.g.,
DeviceNet
Unit)
Network not running, etc.
CS/CJ/NSJ Series Instructions Reference Manual (W474)
OK
OK
Processed normally
DeviceNet
node
(e.g., slave)
DeviceNet
node
(e.g., slave)