196
Serial Gateway Overview
Section 6-1
6-1
Serial Gateway Overview
6-1-1
Overview
FINS messages (commands) that are received are automatically converted
into the corresponding protocol and then sent via serial communications. The
responses are also automatically converted. FINS messages can be con-
verted into the following protocols.
• CompoWay/F
• Modbus-RTU
• Modbus-ASCII
• Host Link FINS (FINS commands enclosed in Host Link header and ter-
minator)
Note
Serial Communications Boards/Units can receive FINS commands
via a FINS network (including Host Link FINS) or via the CPU bus.
6-1-2
Operating Conditions
The Serial Gateway is enabled under the following conditions.
• When Serial Gateway mode is set as the serial communications mode.
• When protocol macro mode is set as the serial communications mode,
and the Serial Gateway Prohibit Switch is OFF. (The serial gateway is also
enabled during execution of PMCR(260) instructions.)
6-1-3
Features
Unifying to FINS Networks for CompoWay/F-compatible OMRON Components
■
Pre-Ver. 1.2 Units
To access an OMRON CompoWay/F-compatible component (e.g., Tempera-
ture Controller or Digital Panel Meter) by sending user-specified CompoWay/F
commands from the PLC, the standard system protocol, CompoWay/F Mas-
ter, must be executed. This operation is performed by executing the
PMCR(260) instruction in the ladder program of the CPU Unit on the same
PLC using the Board/Unit’s protocol macro function.
This protocol macro function, however, does not enable access through the
network. (When execution of a user-specified CompoWay/F command is not
required, a CJ1W-CIF21 Simple Communications Unit can be used to share
specified data without using communications instructions.)
2803
2804
2805
FINS header
FINS header
FINS header
FINS header
User-
specified
CompoWay/F command
Modbus-RTU command
Modbus-ASCII command
User-specified data
CompoWay/F command
Modbus-RTU command
Modbus-ASCII command
Host Link header
Serial
Communications
Board/Unit
The Serial Gateway is enabled under the following conditions.
•
In Serial Gateway mode
•
In protocol macro mode with the Serial Gateway Prohibit Switch turned OFF
FINS message (via network or CPU bus)
RS-232C or RS-422A/485
User-specified
FINS command
Terminator
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...