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Memory Areas
Appendix B
Routing Tables (DM 6450 to DM 6499) (See page 247.)
When the use of routing tables is enabled by the software switch setting, the routing tables are stored in these
words. Do not use them for anything else.
CVM1 and CV-series PLCs
Auxiliary Area
CPU Bus Unit Restart Bits
Bits A00100 through A00115 can be turned ON to reset CPU Bus Units number #0 through #15, respectively.
The Restart Bits are turned OFF automatically when restarting is completed.
Do not turn these bits ON and OFF in the program; manipulate them from the CVSS.
CPU Bus Service Disable Bits
Bits A01500 through A01515 can be turned ON to stop service to CPU Bus Units numbered #0 through #15,
respectively. Turn the appropriate bit OFF again to resume service to the CPU Bus Unit.
CPU Bus Unit Initializing Flags
Bits A30200 through A30215 turn ON while the corresponding CPU Bus Units (Units #0 through #15, respec-
tively) are initializing.
CPU Bus Error and Unit Flags
Bit A40112 is turned ON when an error occurs during the transmission of data between the CPU Unit and CPU
Bus Units, or a WDT (watchdog timer) error occurs in a CPU Bus Unit. The unit number of the CPU Bus Unit
involved is contained in word A405.
Bits A40500 through A40515 correspond to CPU Bus Units #0 through #15, respectively. When a CPU Bus
Error occurs, the bit corresponding to the unit number of the CPU Bus Unit involved is turned ON.
CPU Bus Unit Setting Error Flag and Unit Number
Bit A40203 is turned ON when the CPU Bus Units actually installed differ from the Units registered in the I/O
table. The unit number of the CPU Bus Unit involved is written to word A427.
Bits A42700 through A42715 correspond to CPU Bus Units #0 through #15, respectively. When a error occurs,
the bit corresponding to the unit number of the CPU Bus Unit involved is turned ON.
CPU Bus Unit Error Flag and Unit Numbers
Bit A40207 is turned ON when a parity error occurs during the transmission of data between the CPU Unit and
CPU Bus Units. The unit number of the CPU Bus Unit involved is written to word A422.
Bits A42200 through A42215 correspond to CPU Bus Units #0 through #15, respectively. When a CPU Bus
Unit Error occurs, the bit corresponding to the unit number of the CPU Bus Unit involved is turned ON.
Word(s)
Bit(s)
Function
A001
00 to 15
CPU Bus Unit Restart Bits
A015
00 to 15
CPU Bus Service Disable Bits
A302
00 to 15
CPU Bus Unit Initializing Flags
A401
12
CPU Bus Error Flag
A402
03
CPU Bus Unit Setting Error Flag
07
CPU Bus Unit Error Flag
A405
00 to 15
CPU Bus Unit Error Unit Number
A410
00 to 15
CPU Bus Unit Duplicate Number
A422
00 to 15
CPU Bus Unit Error Unit Number
A427
00 to 15
CPU Bus Unit Setting Error Unit Number
A502
00 to 07
Port #0 to #7 Enabled Flags
08 to 15
Port #0 to #7 Execute Error Flags
A503 to A510
00 to 15
Port #0 to #7 Completion Codes (See page 194)
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 ...