Toshiba TOSDIC-CIE DS User Manual

4. Troubleshooting
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4. Troubleshooting
When the intelligent PI/O system is actually run, it sometimes does not run as expected. In such a
case, before judging that a system breakdown has occurred, perform the checks in Table 4.1 and
take the action indicated.
Table 4.1 When the system does not operate normally (part 1)
Symptom Checks Action
The LED on the PI/O module
below the communication base
unit fails to light up. Or, it lights
up briefly and then immediately
goes off.
Is the system power supply
correctly connected to the
communication base unit?
Check the polarity and connect
correctly.
Is the I/O bus cable connected
securely?
Insert the cable connector in all the
way, and lock it in place.
Is the system power supply
voltage within the rating?
Check for power supply overload or
breakdown.
Are the communication modules
all mounted securely on the
communication base unit terminal
block?
Fix in place securely with screws.
Serial bus error is detected. Is the serial bus wiring to the
communication base unit correct?
Recheck the wiring paths, and wire
correctly.
Is the termination resistor
connected to the last stage
communication base unit terminal
block correctly?
Connect the termination resistor
correctly to the terminal section.
Are the communication base unit
terminal block screws tightened
securely?
Tighten the screws securely.
Are the communication base unit
terminal blocks and the
communication modules mounted
securely?
Tighten the screws securely.
Are the communication base unit
numbers set correctly?
Set the numbers correctly.
NOTE:
 When troubleshooting, use the following manuals together with this one.
 MCS1000 Operation Manual 6F8C0693
 TOSDIC-CIE 1000 Engineering Tool Operation Manual 6F8C0696

Toshiba TOSDIC-CIE DS Specifications

General

Brand	Toshiba
Model	TOSDIC-CIE DS
Category	Control Systems
Language	English