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Communications Cycle Time
Section 8-2
8-1-4
Specifying Network Parameters
The network parameters can be specified from the Controller Link Support
Software. This section describes only the allowable setting range for each net-
work parameter. Refer to the
Controller Link Support Software Operation
Manual
(W308) for setting procedures.
The following table shows the setting range and default for network parame-
ters.
The network parameters become valid immediately after being set.
Note
1.
The setting range will be 2 to 62 and the default value will be 62 when the
Wired Network 62 Node Enable Bit in the DM Parameter Area software
switches of the CS1W-CLK21-V1, CS1W-CLK23, CJ1W-CLK21-V1, or
CJ1W-CLK23 Unit is ON and the Unit is restarted.
2.
Always stop the data link before changing network parameters.
3.
Specify a value for the maximum node address that is equal to or greater
than the maximum node address in the Controller Link Network.
4.
For the CVM1 and CV-series PLCs, always set the System Protect Key
Switch on the CPU Unit to NORMAL. Otherwise, the network parameter
settings will not be stored normally.
5.
The maximum node address cannot be changed to 32 when the Wired
Network 62 Node Enable Bit is ON in the DM Parameter Area software
switches of a CS1W-CLK23, CJ1W-CLK23, CS1W-CLK21-V1, or CJ1W-
CLK21-V1 Unit with unit version 1.2 or later.
8-2
Communications Cycle Time
This section describes how to calculate the communications cycle time.
8-2-1
Active Data Links
The following equations are used to calculate the communications cycle time
when data links are operating.
Wired Systems
Note
A: Total number of data link words within the network
(total number of words in send areas of all nodes)
B: Number of polled nodes per comm cycle
(value specified in the network parameters)
C: Number of nodes connected to the network
D: Number of nodes that send messages during the
communications cycle
E: Total number of bytes in messages transmitted during the
communications cycle
Network parameter
Setting
range
Default
value
Maximum node address
2 to 32
(See note 1.)
32
(See note 1.)
Number of polled nodes per communications cycle
1 to 31
4
Maximum no. of event-frames per communications
cycle
6 to 238
35
Baud rate
Equation
2 Mbps
10
×
A + 600
×
B + 290
×
C + 320
×
D + 4
×
E + 3,290 (
µ
s)
1 Mbps
18
×
A + 1,150
×
B + 370
×
C + 360
×
D + 8
×
E + 3,770 (
µ
s)
500 Kbps
34
×
A + 2,260
×
B + 530
×
C + 440
×
D + 16
×
E + 4,730 (
µ
s)
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 ...