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7
Protocol Overview
Section 1-3
Note
*The CS-series Serial Communications Boards/Units without the “-V1” suffix
do not support this Simple Backup Function, but the CJ1W-SCU21/41 does
support this function even though the model number lacks the “-V1” suffix.
1-3
Protocol Overview
A Serial Communications Board is an Inner Board for CS-series CPU Units
that provides RS-232C and/or RS-422A/485 serial ports. An Inner Board is an
option and is installed in the CPU Unit.
A Serial Communications Unit is a CPU Bus Unit that provides two RS-232C
serial ports or one RS-232C and one RS-422A/485 port. The following eight
serial communications modes can be used as required for each serial port.
• Host Link:
For connections between host computers and PLCs
• Protocol macro: For communications between PLCs and general-purpose
external devices
• 1:N NT Link:
For communications between PLCs and Programmable
Terminals (PTs)
• Loopback test: For testing the communications ports
• Serial Gateway
• No-protocol
• 1:1 Host Link
• Modbus-RTU slave mode
Note
(1) The Serial Gateway can also be executed in protocol macro mode.
(2) Modbus-ASCII mode is not supported.
Note
1.
A 4-wire connection must be used when using Host Link communications
for an RS-422A/485 connector.
PLC
Series
Product
Model
number
Serial ports
Serial communications mode
Host Link
Protocol
macro
1:N NT Link
(See note 2.)
Loop-
back
test
Serial
Gate-
way
Serial
Gate-
way in
proto-
col
macro
mode
No-
proto-
col
(See
note
3.)
1:1
Host
Link
Mod-
bus-
RTU
slave
CS
Serial
Communi-
cations
Boards
CS1W-
SCB21-V1
RS-232C
OK
OK
OK
OK
OK
OK
OK
OK
OK
RS-232C
OK
OK
OK
OK
OK
OK
OK
OK
OK
CS1W-
SCB41-V1
RS-232C
OK
OK
OK
OK
OK
OK
OK
OK
OK
RS-422A/485 OK (See note 1.) OK
OK
OK
OK
OK
OK
OK
OK
Serial
Communi-
cations Unit
CS1W-
SCU21-V1
RS-232C
OK
OK
OK
OK
OK
OK
OK
OK
OK
RS-232C
OK
OK
OK
OK
OK
OK
OK
OK
OK
CS1W-
SCU31-V1
RS-422A/485 OK (See note 1.) OK
OK
OK
OK
OK
OK
OK
OK
RS-422A/485 OK (See note 1.) OK
OK
OK
OK
OK
OK
OK
OK
CJ
Serial
Communi-
cations Unit
CJ1W-
SCU21-V1
RS-232C
OK
OK
OK
OK
OK
OK
OK
OK
OK
RS-232C
OK
OK
OK
OK
OK
OK
OK
OK
OK
CJ1W-
SCU31-V1
RS-422A/485 OK (See note 1.) OK
OK
OK
OK
OK
OK
OK
OK
RS-422A/485 OK (See note 1.) OK
OK
OK
OK
OK
OK
OK
OK
CJ1W-
SCU41-V1
RS-422A/485 OK (See note 1.) OK
OK
OK
OK
OK
OK
OK
OK
RS-232C
OK
OK
OK
OK
OK
OK
OK
OK
OK
---
Device to be connected
Host computer
or Programming
Device
General-
purpose
external
device
PT
None
Depends on the
protocol used at
the conversion
destination
Gen-
eral-
pur-
pose
exter-
nal
device
Host Link com-
puter
Supporting unit versions
All unit versions
Unit version 1.2 or later
Unit version 1.3
or later
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...