DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming
LED indicator Description How to deal with
The red light
flashes.
The red light
keeps on.
There are syntax
error existing in the
program written to
PLC or the PLC
device or instruction
is out of the allowed
range.
PLC scan is
timed-out
Judge the error cause according to the content
value of the special register D1004 in PLC; find
the program error position according to the
content value of D1137. For more details on the
error codes in D1004, please refer to “ES2 series
PLC operation manual (Programming)”.
Reduce the time for executing PLC program or
use WTD instruction
‣ COM3(CANopen)Indicator
LED indicator Description How to deal with
The green
light keeps on.
The green
light is in
single flash.
The green
light flashes.
The red light
is in double
flashes.
The red light
in single flash.
The red light
keeps on.
DVP-ES2-C is
normal.
DVP-ES2-C stops.
As DVP-ES2-C is in
slave mode, it is
preoperational;
As DVP-ES2-C is in
master mode, some
slave is offline.
The slave is off-line.
At least one error
counter in the CAN
controller reaches or
exceeds the warning
level.
Bus-off
No resolution is required
The superior equipment is downloading the
network configuration and waiting to complete
downloading.
1. Check whether the wiring of the CANopen bus
cable is correct.
2. Check whether the baud rate of the master is
the same as that of the slave.
3. Check if the configured slaves have connected
to the network.
4. Check if any slave is offline.
1. Check whether the CANopen bus cable is a
standard one.
2. Check whether both ends of the CANopen bus
are connected to the terminal resistors.
1. Check whether the CANopen bus cable is a
standard one.
2. Check whether both ends of the CANopen bus
are connected to the terminal resistors.
3. Check whether there is much interference
around the CANopen bus cable.
1. Check whether the wiring of the bus cable in
the CANopen network is correct.
2. Check whether the baud rate of the master is
the same as that of the slave.
7.5.2 CANopen Network Node State Display
‣ While the special auxiliary relay M1349 of DVP-ES2-C is ON, the CANopen function is
enabled and D9980~D9998 will be used as the special registers as the table shows below.
Special register
D9980
D9981~D9996
D9998
Function
Used for displaying the state of DVP-ES2-C.
Used for displaying the state of 16 nodes in the network
Used for monitoring the state of the entire CANopen network
‣ As a master, DVP-ES2-C supports maximum 16 slaves ranging from node 1 to node 16.
7-24