IMR02F04-E1
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6. TROUBLESHOOTING
All wiring must be completed before power is turned on to prevent electric shock, instrument
failure, or incorrect action. The power must be turned off before repairing work for input break
and output failure including replacement of sensor, contactor or SSR, and all wiring must be
completed before power is turned on again.
This section lists some of the main causes and solutions for communication problems.
If you can not solve a problem, please contact RKC sales office or the agent, on confirming the type name
and specifications of the product.
RKC communication
Problem Possible
cause
Solution
No response Wrong connection, no connection or
disconnection of the communication cable
Confirm the connection method or condition
and connect correctly
Breakage, wrong wiring, or imperfect contact of
the communication cable
Confirm the wiring or connector and repair or
replace the wrong one
Mismatch of the setting data of communication
speed and data bit configuration with those of
the host computer
Confirm the settings and set them correctly
Wrong address setting
The communication settings (device address,
communication speed, data bit configuration,
etc.) were not enabled after being changed.
After all communication parameters are set,
the PG500 power is turned on again after
turning it off once.
Error in the data format
Re-examine the communication program
Transmission line is not set to the receive state
after data send (for RS-485)
Continued on the next page.
To prevent electric shock or instrument failure, always turn off the system
power before replacing the instrument.
To prevent electric shock or instrument failure, always turn off the power
before mounting or removing the instrument.
To prevent electric shock or instrument failure, do not turn on the power until
all wiring is completed. Make sure that the wiring is correct before applying
power to the instrument.
To prevent electric shock or instrument failure, do not touch the inside of the
instrument.
All wiring must be performed by authorized personnel with electrical
experience in this type of work.
WARNING
!
CAUTION
