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211
Commands and Responses for Controller Link Units
Section 6-5
Status flag (response):
The overall data link status is returned in one byte of
data, as shown in the following diagram.
Data link mode (response):
The data link mode during operation is returned
in one byte of data, as follows:
01 (Hex): Automatic (Equality Layout)
81 (Hex): Automatic (1:N allocation)
03 (Hex): Manual
Refresh cycle time present value, refresh cycle time maximum value
(response):
The present value and the maximum value of the cycle time for
refreshing the data link area are both returned in units of 1 ms, in hexadeci-
mal, within a range of 0000 to 00FF (decimal: 0 to 255).
Status (response):
The data link status of each mode is returned as shown
in the following diagram. It is the same as the data link status in the PLC.
(Refer to page 158.)
Note
1.
If the type is set to 0000 Hex (or is omitted), only the 32 bytes for nodes 1
to 32 will be returned.
2.
The data link status is not refreshed while the data links are inactive.
3.
Nodes which are not active in the network or participating in the data links
will generate communications errors.
Bit
Data link operational status
0: Not active
1: Active
1: Data link setting error
1: No data link table
Data link mode during operation
0: Manual setting
1: Automatic setting
7
6
5
4
3
2
1
0
0 0
Allocation for automatic setting
00: Equality layout
01: 1:N allocation, common type
10: 1:N allocation, 1 to 1 type
11: 1:N allocation, delivery type
7
6
5
4
3
2
1
0
–
7
6
5
4
3
2
1
0
Byte 1
Byte 2
Byte 3
Bit
Byte 62
Node #1
Node #2
Node #3
Node #62
Data link status for each node
PLC status
0: Inactive (user program not running)
1: Active (user program running)
Communications error (data link reception)
0: Normal
1: Error
PLC's CPU Unit error
0: Normal
1: Error
Data link participation
0: Not in data link or data link inactive
1: In data link
Offset error
0: Normal
1: Error
Error: Offset exceeds number of send words.
Insufficient (short) receive area
0: Sufficient
1: Insufficient
Insufficient: Receive area is smaller than send area.
Excess data is truncated; other data is received.
Remaining receive area
0: Not remaining
1: Remaining
Remaining: Receive area is larger than send area.
Data is received and remaining words are cleared.
Summary of Contents for C200HW-CLK21
Page 3: ...iv ...
Page 9: ...x ...
Page 12: ...xiii TABLE OF CONTENTS Index 367 Revision History 373 ...
Page 13: ...xiv ...
Page 19: ...xx ...
Page 57: ...32 Application Precautions Section 1 5 Example CX Programmer Response Timeout Setting ...
Page 69: ...44 Message Service Procedure Section 2 2 ...
Page 111: ...86 Constructing Networks with Repeater Units Section 3 4 ...
Page 154: ...129 Setting Data Links Section 5 2 Device Information Setting Data Link Tables ...
Page 261: ...236 Response Codes Section 6 7 ...
Page 297: ...272 Message Delay Times Section 8 4 ...
Page 353: ...328 Handling Precautions Section 9 6 ...
Page 364: ...339 Changing the Data Link Tables with Active Data Links Section 10 2 ...
Page 365: ...340 Changing the Data Link Tables with Active Data Links Section 10 2 ...
Page 369: ...344 Standard Models Appendix A ...
Page 391: ...366 Using the Relay Terminal Block Appendix C ...
Page 397: ...372 Index ...
Page 401: ...376 Revision History ...