CS1D-IC102D Omron, CS1D-IC102D Datasheet - Page 451

• Manufacturer Part Number: CS1D-IC102D
• Description: CS1D Dual IO Control Unit
• Manufacturer: Omron

Specifications of CS1D-IC102D

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Troubleshooting Racks and Units
10-3 Troubleshooting Racks and Units
CPU Racks and Standard Expansion Racks
Special I/O Units
Long-distance Expansion Racks
416
POWER indicator is not lit on Power
Supply Unit.
RUN indicator is not lit on CPU Unit
RUN output does not turn ON on Power
Supply Unit.
RUN indicator lit on CPU Unit.
Serial Communications Unit or CS-
series CPU Bus Unit does not operate
or malfunctions.
Bits do not operate past a certain point.
Error occurs in units of 8 or 16 points.
I/O bit turns ON.
All bits in one Unit do not turn ON.
The ERH and RUN
indicators on the Spe-
cial I/O Unit are lit.
Expansion Rack not
detected.
I/O bus error or I/O verifica-
tion error occurs.
Symptom
Symptom
Symptom
I/O refreshing is not being performed for the
Unit from the CPU Unit (CPU Unit monitoring
error).
It’s possible that cyclic refreshing has been dis-
abled for the Special I/O Unit in the Cyclic
Refresh Disable Setting in the PLC Setup (i.e.,
the bit corresponding to the unit number has
been set to 1).
(1) A Terminator is not connected.
(2) An Expansion Rack is not connected
(3) A Unit is faulty.
(1) An I/O Connecting Cable or Terminator
(2) Noise or other external factor.
(3) A Unit is faulty.
correctly.
connection is faulty.
Refer to the Operation Manual for the Special I/O Unit to troubleshoot any
other errors.
PCB short-circuited or damaged.
(1) Error in program.
(2) Power line is faulty.
Internal circuitry of Power Supply Unit
is faulty.
(1) The I/O Connecting Cable is faulty.
(2) The I/O bus is faulty.
Cause
Cause
Cause
Change the bit corresponding to the unit num-
ber to 0 to enable cyclic refreshing, or make
sure that the Unit is refreshed from the program
using IORF at least once every 11 s.
If the TERM indicator is lit, connect a Termi-
nator.
Recheck the connections and configuration
using information in 2-2-2 Expansion Racks
and 2-10-1 CS1W-IC102 I/O Control Units,
I/O Interface Units, and Terminators.
Gradually remove/replace Units to deter-
mine the Unit that is faulty, including the
Backplane, Power Supply Unit, I/O Units,
I/O Control/Interface Unit, and I/O Connect-
ing Cable.
Check that I/O Connecting Cables and Ter-
minators are connected correctly.
Separate all cables from possible sources of
noise or place them in metal ducts.
Gradually remove/replace Units to deter-
mine the Unit that is faulty, including the
Backplane, Power Supply Unit, I/O Units,
I/O Control/Interface Unit, and I/O Connect-
ing Cable.
Replace Power Supply Unit or Back-
plane.
Correct program.
Replace Power Supply Unit.
Replace Power Supply Unit.
Replace the I/O Connecting Cable.
Replace the Backplane.
Remedy
Remedy
Remedy
Section 10-3