11
Protocol Overview
Section 1-3
1-3-4
Loopback Test
A connector with a loopback connection is attached to the specified serial port
to perform loopback tests. Data is sent to this port, and the communications
circuit is tested by comparing the transmitted data and the data returned by
loopback.
Note
This loopback test is performed inside the specified serial port. It is not a loop-
back test using the RS-232C or RS-422A/485 communications path.
1-3-5
Serial Gateway Mode
The received FINS message is automatically converted to either Compo-
Way/F, Modbus-RTU, Modbus-ASCII, or Host Link FINS, depending on the
type of message.
CompoWay/F, Modbus-RTU, and Modbus-ASCII
FINS Host Link
1-3-6
No-protocol Mode
No-protocol mode supports data receiving or data sending using data receive
or send commands, respectively (see note). No-protocol mode, however, can
be used only with CS/CJ-series CPU Units with unit Ver. 3.0 or later in which a
Serial Communications Board or Unit with Unit Ver. 1.2 or later is installed.
Use the no-protocol mode when the data send and receive protocols are to be
created by the user, or when connecting to devices that only receive or send
data, such as bar code readers, or printers.
The loopback test results
are stored.
Loopback test switch
Loopback test
CMND
FINS
FINS
CompoWay/F (See note.)
CompoWay/F (See note.)
CompoWay (See note.)
Send FINS command
Network
Serial
Communications
Unit
Serial
Gateway
CompoWay-compatible
OMRON component,
Modbus-RTU-, or Modbus
ASCII-compatible device
Note: Or Modbus-RTU
commands or Modbus
ASCII commands
CMND
FINS
FINS
FINS
FINS
Network
Host Link
header
Host Link
header
Host link terminator
PLC (Host Link)
Serial
Gate-
way
Host link
terminator
Send FINS
command
CX-Programmer or other
Programming Device for
using CX-Server as a
communications driver
Содержание SYSMAC CJ1W-SCU21-V1
Страница 3: ...iv...
Страница 5: ...vi...
Страница 9: ...x...
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...