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Safety Precautions
xi
Apply safety measures in external circuits (that is, not in the Smart-
Slice I/O Terminal) to keep safety in the system. These measures
must keep safety if a malfunction in the control system or other ex-
ternal factor which has an effect on the control system causes a
problem. Include the items below. Not doing this can cause serious
accidents.
• There must be emergency stop circuits, interlock circuits, limit cir-
cuits, and other safety measures in external control circuits.
• The SmartSlice outputs can stay ON or OFF because of welding
or burning of the output relays, or destruction of the output tran-
sistors. As a countermeasure for such errors, there must be ex-
ternal safety measures to keep safety in the system.
• The SmartSlice I/O Terminal will continue operating when one or
more I/O Units are missing from the SmartSlice I/O Terminal. The
other I/O Units will continue the control operations, including the
control of the outputs. As a countermeasure for such errors, there
must be external safety measures to keep safety in the system.
The CPU Unit refreshes I/O when the program is stopped in PRO-
GRAM mode. Fully make sure that it is safe before changing the
status of bits or words in memory allocated to Output Slaves, Spe-
cial I/O Units, or CPU Bus Units. If you change the bits or words al-
located to a Slave or Unit, you could cause incorrect operation of
the loads connected to the Slave or Unit. The operations below will
change memory status.
• Transferring I/O memory data to the CPU Unit from a Program-
ming Device
• Changing present values in memory from a Programming Device
• Force-setting or force-resetting bits from a Programming Device
• Transferring I/O memory files from a Memory Card or EM file
memory to the CPU Unit
• Transferring I/O memory from a host computer or from a PLC on
a network
Summary of Contents for GRT1-CRT - 05-2008
Page 1: ...CompoNet Communications Unit Cat No W476 E1 01 SmartSlice GRT1 CRT OPERATION MANUAL ...
Page 2: ...SmartSlice GRT1 CRT CompoNet Communications Unit Operation Manual Produced May 2008 ...
Page 3: ...iv ...
Page 17: ...About this Manual xviii ...
Page 28: ...9 Specifications Section 1 4 1 4 3 Dimensions 12 23 1 25 1 61 2 69 7 58 3 8 4 3 mm ...
Page 29: ...10 Specifications Section 1 4 ...
Page 39: ...20 Switches Section 2 3 ...
Page 47: ...28 Installing the Turnback Units Section 3 2 ...
Page 99: ...80 Last Maintenance Date Section 6 12 ...
Page 113: ...94 Performance of Message Communications Section 8 2 ...
Page 127: ...108 Other Error Causes and Error Procedures Section 9 3 ...
Page 141: ...122 Power Consumption and Weight Tables Appendix D ...
Page 143: ...124 Total I O Current Consumption Table Appendix E ...
Page 147: ...128 Index ...
Page 149: ...130 Revision History ...