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Protocol Conversion
Section 6-5
Executing Smart Active Parts Using an NS-series PT (Sending Internal FINS Messages)
The Board/Unit converts the FINS messages to Modbus-RTU protocol for
sending in this operation.
Note
(1) The FINS header contains the following information.
• Remote destination network address (DNA): Same as for CompoWay/F.
• Remote destination node address (DA1): Same as for CompoWay/F.
• Remote unit address (DA2): Same as for CompoWay/F.
(2) The contents of the Modbus-RTU command enclosed in the FINS mes-
sage that is sent is as follows:
Slave address (binary) + FUNCTION code (binary) + Communications
data (binary)
Start and CRC+End are not required when sending FINS. They are add-
ed automatically for serial communications.
Access from PT on Ethernet or serial NT Link
Details
Routing tables
to treat serial
communications
path as network
Note
When the NS-series PT is connected serially to the
PLC using serial communications mode (1:N NT
Links), and the NS-series PT sends FINS com-
mands encapsulated in NT Link commands using
Smart Active Parts, the CPU Unit removes the NT
Link header, etc. from the received command, con-
verting it to a FINS command, and transfers the
command to the Serial Communications Board/
Unit. The Serial Communications Board/Unit uses
the Serial Gateway to convert the command into
the specified protocol. This operation enables seri-
ally connected devices to access the Serial Com-
munications Board/Unit from Smart Active Parts
using an NS-series PT.
Access via serial communications using
Modbus-RTU is possible from a PT con-
nected to the network by executing a
Smart Active Part that is connected seri-
ally, which automatically sends an internal
FINS command.
Optional
2804
FINS header
Smart Active Parts
NS-series PT
Serial Communications Unit/Board
Ethernet
ORMON Inverter
RS-485 (Modbus-RTU)
CPU Unit
FINS message (sent internally)
Modbus-RTU
command
Modbus-RTU
command
Protocol
conversion
Содержание SYSMAC CJ1W-SCU21-V1
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Страница 15: ...xvi...
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...
Страница 781: ...752 Revision History...