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xxv
Safety Precautions
3
• The PLC will turn OFF all outputs when its self-diagnosis function detects
any error or when a severe failure alarm (FALS) instruction is executed.
Unexpected operation,
however,
may still occur for errors in the I/O con-
trol section, errors in I/O memory,
and errors that cannot be detected by
the self-diagnosis function.
As a countermeasure for all these errors, external safety measures must
be provided to ensure safety in the system.
• The PLC or outputs may remain ON or OFF due to deposits on or burning
of the output relays, or destruction of the output transistors. As a counter-
measure for such problems, external safety measures must be provided
to ensure safety in the system.
• When the 24-V DC output (service power supply to the PLC) is over-
loaded or short-circuited, the voltage may drop and result in the outputs
being turned OFF. As a countermeasure for such problems, external
safety measures must be provided to ensure safety in the system.
!WARNING
Fail-safe measures must be taken by the customer to ensure safety in the
event of incorrect, missing, or abnormal signals caused by broken signal lines,
momentary power interruptions, or other causes. Not doing so may result in
serious accidents.
!WARNING
Do not apply the voltage/current outside the specified range to this unit. It may
cause a malfunction or fire.
!Caution
Execute online edit only after confirming that no adverse effects will be
caused by extending the cycle time. Otherwise, the input signals may not be
readable.
!Caution
Confirm safety at the destination node before transferring a program to
another node or editing the I/O area. Doing either of these without confirming
safety may result in injury.
!Caution
Tighten the screws on the terminal block of the AC power supply to the torque
specified in this manual. The loose screws may result in burning or malfunc-
tion.
!Caution
Do not touch anywhere near the power supply parts or I/O terminals while the
power is ON, and immediately after turning OFF the power. The hot surface
may cause burn injury.
!Caution
Pay careful attention to the polarities (+/-) when wiring the DC power supply. A
wrong connection may cause malfunction of the system.
Summary of Contents for Sysmac CP1H
Page 2: ......
Page 3: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised October 2014...
Page 4: ...iv...
Page 10: ...x...
Page 18: ...xviii...
Page 22: ...xxii...
Page 34: ...xxxiv Conformance to EC Directives 6...
Page 76: ...42 Function Blocks Section 1 5...
Page 176: ...142 CP series Expansion I O Unit Wiring Section 3 6...
Page 372: ...338 Analog I O XA CPU Units Section 5 5...
Page 578: ...544 Trouble Shooting Section 8 7...
Page 622: ...588 Sample Application Section 9 12 Network Settings Network Tab Network Settings Driver Tab...
Page 668: ...634 Standard Models Appendix A...
Page 744: ...710 Auxiliary Area Allocations by Address Appendix D...
Page 771: ...737 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 772: ...738 Connections to Serial Communications Option Boards Appendix F...
Page 800: ...766 Specifications for External Power Supply Expansion Appendix H...
Page 806: ...772 Index W Work Area 165 work bits 165 work words 165 write protection 379...
Page 808: ...774 Revision History...
Page 809: ......