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75
I/O Memory Allocations
Section 2-3
Serial Communications
Units (CS/CJ Series)
The Setup Area allocated in the DM Area is used to set the serial communica-
tions mode, communications specifications, and other settings for the Serial
Communications Units. The words from D30000 to D31599 (100 words per
Unit
×
16 Units) are allocated according to the unit number settings.
m = 100
×
unit number
Setting the Setup Areas
The following methods can be used to set the Unit settings in the Setup
Areas.
• Use a Programming Device, such as a Programming Console (see note
a), CX-Protocol, or CX-Programmer.
• Use the STUP(237) instruction (see note b) in the ladder diagram pro-
gram. If it is necessary to change the System Setup while the ladder dia-
gram program is being executed, use this method to change the System
Setup.
Note a) If settings are changed from a Programming Device, cycle the
power to the CPU Unit, use a Restart Bit to restart the Unit or
Board, or use the Port Settings Change Bits to restart the port. Re-
fer to
2-2 Data Exchange with the CPU Unit
for the specific ad-
dresses to use.
b) For the procedure used to change the System Setup using the
STUP(237) instruction, refer to
cations Port Settings Using STUP(237)
.
The usage of the System Setup differs according to the serial communica-
tions mode. For details, refer to the following sections.
Host Link communications:
Section 4 Using Host Link Communications
.
Protocol macros:
Section 5 Using Protocol Macros
.
1:N NT Links:
Section 8 Using 1:N NT Links
.
Loopback test:
Section 10 Loopback Test
.
Unit No.
Words
Unit No. 0
D30000 to D30099
Unit No. 1
D30100 to D30199
Unit No. 2
D30200 to D30299
Unit No. 3
D30300 to D30399
Unit No. 4
D30400 to D30499
Unit No. 5
D30500 to D30599
Unit No. 6
D30600 to D30699
Unit No. 7
D30700 to D30799
Unit No. 8
D30800 to D30899
Unit No. 9
D30900 to D30999
Unit No. A
D31000 to D31099
Unit No. B
D31100 to D31199
Unit No. C
D31200 to D31299
Unit No. D
D31300 to D31399
Unit No. E
D31400 to D31499
Unit No. F
D31500 to D31599
m to m + 9: Port 1 Settings
m + 10 to m + 19: Port 2 Settings
m + 40 to m + 99: Reserved for the system
m + 20 to m + 29: Port 1 Settings for Modbus-
RTU slave mode
m + 30 to m + 39: Port 1 Settings for Modbus-
RTU slave mode
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...