Delta PD-01 Specifications Page 26

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PROFIBUS DP Slave Communicaion Module RTU-PD01
DVP-PLC Operation Manual
24
LED status Indication How to correct
Red light on
RTU-PD01 is not connected to
the master.
3. Check if the actual address of RTU-PD01 is
consistent with the one set in the master
configuration software.
Red light flashes
RTU-PD01 setting or
configuration error
1. Check if the PROFIBUS address of RTU-PD01
is between 1 and 125 (decimal).
2. Check if the I/O modules actually connected to
RTU-PD01 and their order are consistent with
the software configuration.
z RS-485 LED
RS-485 LED displays whether the RS-485 communication between RTU-PD01 and the Modbus
device connected is working normally.
LED status Indication How to correct
Green light on Normal ---
Green light
flashes
The Modbus function has not
been enabled, or no Modbus
slave is configured.
---
Red light on All Modbus slaves are off-line
Check if the RS-485 cable is working normally, or
the communication format is correct.
Red light flahses
The RS-485 communication
with part of the Modbus devices
connected is abnormal.
Check if part of the RS-485 devices connected
have not responded or responded incorrectly.
z RUN LED
RUN LED displays whether RTU-PD01 is operating or in stop status.
RUN status Indication
Green light on RTU-PD01 is operating.
Off RTU-PD01 is in stop status.
z ALARM LED
ALARM LED displays whether the right-side special I/O module is working normally and the power
supply is sufficient.
LED status Indication How to correct
Off Normal ---
Red light on
DV24V power supply is
insufficient.
Check if the power supply is overloaded.
Red light slowly
flashes (on 0.5s
and off 0.5s)
Error in special I/O module
Please refer to the explanations on error
registersfor special I/O module in “DVP-PLC
Application Manual – Special Modules”.
Red light fast
flashes (on 0.3s
and off 0.3s)
Special I/O module is off-line.
1. Check if the power supply on special I/O module
is normal.
2. Check if the connection between RTU-PD01 and
special module is working normally.
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