Omron CP - PROGRAMMING MANUAL 05-2007 - Page 894

861
Network Instructions Section 3-24
2) Error End The are two possibilities for error ends, as described in the next two subsec-
tions.
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 Communica-
tions Error Flag (A213.00 to A213.07: Communications port No. 0 to 7) and
the Communications Port Error Flag (A219.00 to A219.07: Communications
port No. 0 to 7) will turn ON.
After completion, the Communications Port Completion Code (A203 to A210:
Communications port No. 0 to 7) will contain the FINS message error code.
Explicit response
OK
FINS error
FINS error response No explicit response
CPU Unit
FINS header
FINS header FINS response
CJ-series
CPU Bus
Unit
(e.g.,
DeviceNet
Unit)
Explicit message
Explicit message not sent
Network not running, etc.
Explicit
message
instruction
DeviceNet network
DeviceNet
node
(e.g., slave)
Error
1
0
1
0
1
0
0000 hex
0000 hex
Communications Port
Enabled Flag
Explicit Message
Instruction
Explicit Communications
Error Flag
Communications Port
Error Flag
Communications Port
Completion Code
Instruction
being
executed
FINS end code Previous
Instruction
being
executed