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189
Selecting Communications Instructions
Section 6-2
Note
1.
SR 253 to SR 255 cannot be written at the source node, even if they are
specified by the RECV instruction’s beginning receive word at the source
node.
2.
For details on extended DM Area, refer to the operation manual for the PLC
model that is being used.
6-2
Selecting Communications Instructions
Note
CMND cannot be used with C200HX/HG/HE PLCs.
DM Area
DM 0000 to DM 6655
Extended DM Area
EM 0000 to EM 6143 (See note 2.)
Area
Range
Do you want to easily read from
or write to the I/O memory area?
Do you want to intermittently read
from a memory area?
Aside from memory areas, do you
want to write the following kinds of
data?
PLC internal clock
File Memory
Do you want to read the following
kinds of data?
PLC model
PLC status
Cycle time
Messages
Errors
Forced set/reset status
Do you want to change the PLC's
operating mode?
Do you want to force set/reset bit
status?
Use SEND and RECV.
YES
Use CMND. (See note.)
YES
YES
YES
YES
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 ...