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101
CVM1 and CV-series Controller Link Units
Section 4-4
2.
Do not set the same node address twice within the same Network. An error
will occur if the same address is set for two different nodes. The ERC indi-
cator on the front of the Unit will light and either communications will stop,
or the INS indicator will not light and you will be unable to participate in the
Network.
3.
The send sequence for the data link areas is determined according to the
sequence of node addresses for automatically set data links.
4.
Assign node addresses consecutively beginning from 01 whenever possi-
ble to minimize Network construction time.
4-4-4
Baud Rates
Set the following pins for the baud rate setting (DIP switch).
Note
1.
Always turn OFF the PLC’s power before setting the baud rate.
2.
Keep pins 3 and 4 set to OFF. If they are turned ON, internal data may be
erased.
Set the same baud rate for all the nodes on the Network using DIP switch pins
1 and 2 on the front of the Unit. The baud rate is set as shown below.
The maximum transmission distance will also change according to the setting.
Note
The factory default setting is shown in bold.
Note
Set the same baud rate for all the nodes on the Network. Normal communica-
tion cannot be performed unless the same baud rate is set for all the nodes.
4-4-5
Terminating Resistance
Turn ON the terminating resistance using the switch on the bottom of the Unit
for the Units of both ends of the Network. The terminating resistance is
required at both ends of a Network to absorb unnecessary signals and reduce
noise.
The Controller Link Unit has built-in terminating resistance, which can be con-
nected simply by turning ON the slide switch.
Pin 3, 4: Not used (must be OFF)
Pin 1, 2: Baud rate
The factory default setting is shown above.
ON
3
2
14
Switch
Baud rate
Maximum
transmission distance
Pin 1
Pin 2
OFF OFF
2 Mbps
500 m
ON
OFF
1 Mbps
800 m
OFF
ON
500 Kbps
1 km
ON
ON
Do not set.
Switch at the front
Terminating resistance
OFF (factory default)
Not connected.
ON connected
ON
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 ...