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603
K3T
@
Intelligent Signal Processor Protocol
Appendix L
• RS-485 2-wire Connections
Note
1.
The connection configuration is a one-to-one or a 1-to-N configuration. For 1-to-N connections, up to
32 units including the Serial Communications Boards/Units can be connected.
2.
The maximum cable length is 500 m. Use shielded twisted-pair cables (AWG28i or greater).
3.
Connect terminating resistance at both ends of the transmission path.
4.
Turn the terminal block switch ON at the terminators.
5.
Turn the terminal block switches OFF for units that are not terminators.
Signal name
Abbreviation
Signal direction
Terminal
Inverting output
–
Input or output
19
Non-inverting output
+
Input or output
18
Serial Communications
Board/Unit
Shield
Intelligent Signal Processor
Turn ON the terminal block switch for
terminators only.
Signal
Name
Pin
No.
SN751177N or
equivalent
Shield
Signal
Name
Signal
Name
Intelligent Signal Processor
Unit designated as terminator.
The terminal block switch is turned ON.
Terminal
block SW
Terminal block SW ON
Termi-
nal.
Termi-
nal.
RS-485: D-sub
9-pin female
RS-485:
Terminal block
SDA
SDB
*1: Set the 2-/4-wire switch
to the 2-wire setting.
*2: Turn ON the terminat-
ing resistance switch.
FG
1
2
19
18
18
19
220
Ω
220
Ω
4.7 k
Ω
4.7 k
Ω
4.7 k
Ω
6.8 V
5 V
51 k
Ω
TX
RX
RS-485:
Terminal block
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...