300
Modbus-RTU Slave Function for Replacing Existing PLCs
Section 9-6
Unit Ver. 1.2 or Later
When Serial Communications Units/Boards with Unit Ver. 1.2 or later are
used, however, the Board/Unit’s Modbus-RTU Slave specifications can be
switched according to the CPU Unit or other Unit in which the host computer
program is to be reused.
The Modbus-RTU Slave specifications change according to the Modbus-RTU
Slave compatible device mode that is selected.
• When the following commands for reading I/O memory (RR, RL, RH, RC,
RD, RJ, and RG) are received, the number of data words in each
response frame that is returned to the host is different.
• When the command for reading the status of the CPU Unit (MS) is
received, the response format that is returned to the host according to the
FAL/FALS instruction execution status is different.
Command
Name
RR
CIO AREA READ
RL
LINK AREA READ
RH
HR AREA READ
RC
PV READ
RD
DM AREA READ
RJ
AR AREA READ
RG
T/C STATUS READ
Command
Name
MS
PROCESSOR STATUS READ
Содержание SYSMAC CJ1W-SCU21-V1
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Страница 89: ...60 Basic Operating Procedure Section 1 9...
Страница 151: ...122 RS 232C and RS 422A 485 Wiring Section 3 4...
Страница 173: ...144 Host Link Function for Replacing Existing PLCs Section 4 6...
Страница 223: ...194 Enhanced Protocol Macro Functions Section 5 6...
Страница 277: ...248 Communications Frames Section 6 8...
Страница 291: ...262 Basic Operating Procedure in No protocol Mode Section 7 4...
Страница 301: ...272 Auxiliary Area and CIO Area Allocations Section 8 3...
Страница 391: ...362 Introduction Appendix A...
Страница 421: ...392 CompoWay F Master Protocol Appendix B...
Страница 513: ...484 E5 K Digital Controller Read Protocol Appendix F...
Страница 571: ...542 E5ZE Temperature Controller Write Protocol Appendix I...
Страница 587: ...558 E5 J Temperature Controller Protocol Appendix J...
Страница 627: ...598 ES100 Digital Controller Protocol Appendix K...
Страница 661: ...632 V500 V520 Bar Code Reader Protocol Appendix M...
Страница 697: ...668 3Z4L Laser Micrometer Protocol Appendix N...
Страница 717: ...688 Visual Inspection System Protocol Appendix O...
Страница 755: ...726 V600 V620 ID Controller Protocol Appendix P...
Страница 763: ...734 Hayes Modem AT Command Protocol Appendix Q...
Страница 767: ...738 Changing Communications Port Settings Using STUP 237 Appendix R...
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