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259
Auxiliary Area and CIO Area Allocations
Section 7-3
Receiving Data (RXD(235)/RXDU(255))
n = CIO 1500 + 25
×
unit number
Words
Bit
Board
(CS Series only)
Unit
(CS/CJ Series)
RXD(235)
RXDU(255)
Port 1
Port 2
Port 1
Port 2
A35606
A35614
Word n+9,
bit 06
Word n+19,
bit 06
Reception Completed Flag
1: Reception completed; 0: No reception or reception in
progress
This flag turns ON when the specified number of bytes are
received at the Board/Unit.
The flag turns OFF immediately after the CPU Unit has com-
pleted writing to I/O memory the data received using the
RXD(235) or RXDU(255) instruction.
A35607
A35615
Word n+9,
bit 07
Word n+19,
bit 07
Reception Overflow Flag
1: The specified number of bytes or higher has been received
at the Board/Unit (data continued to be received after the
Reception Completed Flag turned ON).
0: The number of bytes received at the Board/Unit has not
exceeded the specified number (data did reception did not
continue after the Reception Completed Flag turned ON).
This flag turns ON if the Board/Unit continues to receive data
after completing data reception.
The flag turns OFF immediately after the CPU Unit has com-
pleted writing to I/O memory the data received using the
RXD(235) or RXDU(255) instruction.
A35700 to
A35715
A35800 to
A35815
Word n+10,
bits 00 to 15
Word n+20,
bits 00 to 15
Reception Counter (specified number of receive data bytes)
Counts in hexadecimal the number of data bytes received
from 0 to 256 bytes (0000 to 0100 hex)
A42404
---
---
Inner Board Service Failure Flag (non-fatal error)
This flag turns ON when TXD(236)/RXD(235) is sent to a pre-
Ver. 1.2 Serial Communications Board that does not support
no-protocol mode.
---
---
A20200 to A20207
Communications Port Enabled Flags
Turns ON (1) if execution of the network communications
instructions (SEND(090), RECV(098), CMND(490),
PMCR(260)) including TXDU(256) and RXDU(255), is possi-
ble for the communications port.
---
---
A203 to A210
Communications Port Completed Codes
Stores the response code when network communications
instructions (SEND(090), RECV(098), CMND(490),
PMCR(260)) including TXDU(256) and RXDU(255) are exe-
cuted.
---
---
A21900 to A21907
Communications Port Error Flags
Turns ON (1) if an error occurs during execution of the network
communications instructions (SEND(090), RECV(098),
CMND(490), PMCR(260)) including TXDU(256) and
RXDU(255).
CIO 190804
CIO 191804
Word n+8,
bit 04
Word n+18,
bit 04
Overrun Error Flag
1: 260 bytes or higher received in the reception buffer before
execution of RXD(235)/RXDU(255) during no-protocol mode)
0: Normal (Data received in reception buffer is less than 260
bytes)
Note: If an overrun error occurs, the Overrun Error Flag can
be turned OFF by cycling the power or restarting the Board.
Summary of Contents for SYSMAC CJ1W-SCU21-V1
Page 3: ...iv...
Page 5: ...vi...
Page 9: ...x...
Page 15: ...xvi...
Page 89: ...60 Basic Operating Procedure Section 1 9...
Page 151: ...122 RS 232C and RS 422A 485 Wiring Section 3 4...
Page 173: ...144 Host Link Function for Replacing Existing PLCs Section 4 6...
Page 223: ...194 Enhanced Protocol Macro Functions Section 5 6...
Page 277: ...248 Communications Frames Section 6 8...
Page 291: ...262 Basic Operating Procedure in No protocol Mode Section 7 4...
Page 301: ...272 Auxiliary Area and CIO Area Allocations Section 8 3...
Page 391: ...362 Introduction Appendix A...
Page 421: ...392 CompoWay F Master Protocol Appendix B...
Page 513: ...484 E5 K Digital Controller Read Protocol Appendix F...
Page 571: ...542 E5ZE Temperature Controller Write Protocol Appendix I...
Page 587: ...558 E5 J Temperature Controller Protocol Appendix J...
Page 627: ...598 ES100 Digital Controller Protocol Appendix K...
Page 661: ...632 V500 V520 Bar Code Reader Protocol Appendix M...
Page 697: ...668 3Z4L Laser Micrometer Protocol Appendix N...
Page 717: ...688 Visual Inspection System Protocol Appendix O...
Page 755: ...726 V600 V620 ID Controller Protocol Appendix P...
Page 763: ...734 Hayes Modem AT Command Protocol Appendix Q...
Page 767: ...738 Changing Communications Port Settings Using STUP 237 Appendix R...
Page 781: ...752 Revision History...