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Overview of 1:N NT Links
Section 8-1
5.
NT Link serial communications are unique and are not compatible with oth-
er serial communications modes.
6.
The NT20S, NT600S, NT30, NT30C, NT620, NT620C, and NT625C can-
not be used if the cycle time of the CPU Unit is 800 ms or longer (even if
only one of these PTs is used in a 1:N NT Link).
7.
With some PTs, timeout settings can be changed to eliminate some of the
communications errors. Refer to the operation manual for the PT for de-
tails.
8.
If more PTs are required by the system than allowed by the above restric-
tions, connect the PTs in smaller groups to different ports and increase the
number ports by adding Serial Communications Units or a Serial Commu-
nications Board (if one is not already being used).
Priority
Registered
PTs per port
CPU Unit's cycle time (ms)
Priority Not
Registered
PTs per port
CPU Unit's cycle time (ms)
Example for NT31/NT631(C) PTs
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...