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86
Checking Data Link Status
Section 5-4
See
9-2 Status Information and Troubleshooting
for troubleshooting proce-
dures.
• The following shows an example of a remaining receive area.
Status
Values
Description
PC status
0: Program execution stopped
1: Program being executed
Indicates if the PC program is being executed or not.
Always 1 for Controller Link Support Board nodes.
CPU Unit error
0: No error
1: Error
Indicates if an error has occurred in the PC.
Always 0 for Controller Link Support Board nodes.
Communications
error
0: Normal
1: Error
Indicates if data link data for node was received normally or
not.
Data link participa-
tion
0: Not participating in data links
or data links inactive
1: Participating in data links
Indicates data link participation status.
Offset error
0: No error
1: Error
“Error” indicates that the offset is larger than the number of
send words. The data links will operate and the node will
remain participating in the data links. The receive area at
nodes with this error will be all zeros.
Receive area
remaining
0: No receive area remaining
1: Receive area remaining
A receive area is “remaining” if the number of words in the
receive area is larger than the number of send words. Data will
be received normally and all words in the receive area beyond
those containing the send words will have indeterminate sta-
tus.
Insufficient (short)
receive area
0: Receive area not short
1: Receive area short
A receive area is “short” if the number of send words is larger
than the number of words in the receive area. Data will be
received normally, but all words that will not fit in the receive
area will be discarded.
First word
+1
+2
+3
N
ode 2
N
ode 4
N
ode 6
N
ode 8
to
to
to
to
Note
The first word is set in the Fins
Gateway settings. Refer to Fins
Gateway online help for details.
+14
+15
+16
+17
+27
+28
+29
+30
N
ode 1
N
ode 3
N
ode 4
N
ode 7
N
ode 30
N
ode 32
N
ode 34
N
ode 36
N
ode 29
N
ode 31
N
ode 33
N
ode 35
N
ode 56
N
ode 58
N
ode 60
N
ode 62
N
ode 55
N
ode 57
N
ode 59
N
ode 61
PC Operating Status
0: Stopped
1: Running (PC program being executed.)
CPU Unit Error Status
0:
N
o error
1: Error
Data Link Communications Error Status
0:
N
ormal
1: Error (Data link data not recei
v
ed normally.)
Data Link Participation Status
0:
N
ot participating or data links stopped
1: Participating
Offset Error Status (Offset larger than number of send words)
0:
N
ormal
1: Error
Insufficient Reception Area
0:
N
ormal
1: Insufficient
Excess Reception Area
0:
N
ormal
1: Excess
(Data larger than data link reception area.
O
v
erflow data discarded.)
(Data smaller than data link reception area.
O
v
erflow area data not specified.)
Data indicated by
Send
area
Recei
v
e
area
Send
area
Recei
v
e
area
Data indicated by
No Remaining
is recei
v
ed in
node 2.
is recei
v
ed in node 2 and the
remaining words are cleared.
Remaining
N
ode 1
N
ode 2
N
ode 1
N
ode 2
Summary of Contents for SYSMAC 3G8F7-CLK12-EV1
Page 2: ......
Page 4: ...iv ...
Page 20: ...xx Conformance to EC Directives 6 ...
Page 48: ...28 Applications Precautions Section 1 4 Example CX Programmer Response Timeout Setting ...
Page 68: ...48 Backup Power Supply Wiring Optical Ring Systems Only Section 2 4 ...
Page 74: ...54 Using the C Library Section 3 2 ...
Page 110: ...90 Changing the Data Link Tables with Active Data Links Section 5 5 ...
Page 187: ......