Led Specification - Hitachi HIDIC EH-150 Applications Manual

5.5

LED Specification

Outlook of LED
DEVICENET EH-RMD
NS MS STATUS
RUN
(1) MS/NS
NS
MS
Lit in Green
Lit in Red
Turned off
No. Display status
MS lit in green
1
NS lit in green
MS lit in green
2 NS flashing in
green
MS lit in green
3
NS turned off
MS lit in green
4
NS lit in red
MS lit in green
5
NS flashing in red
MS lit in red
6
NS turned off
MS turned off
7
NS turned off
Table 5.4 LED Specification
Symbol
NS Indicates the status of the network.
Indicates the status of the communication
MS
interface board
RUN Indicates the operation mode.
STATUS Indicates the status of the PLC interface board.
Table 5.5 MS/NS LED Specification
Flashing in
Lit in Green
Green
1 2
- -
- -
Table 5.6 MS/NS LED detail
Description
I/O connection established
I/O connection not established
Checking node address overlap/no
power supply to the network
Node address overlaps/it is detected
that the bus is not functioning
Communication timeout/
Scan List unmatched
Communication board hardware
error
No power supply to the PLC/waiting
for module initialization
Chapter 5 Master Module Specifications
Description
Lit in Red
4
-
-
5-3
Green/red
Green/red
Green/red
Flashing in
Turned off
Red
5
-
-
Action to take
-
Check all connected slaves.
Check the scan list from the
configurator.
Check the communication speed
of each device.
Check that 24 V DC is supplied.
Check the node address and
communication speed of each
device.
Check to see if a cable is broken.
Check that the terminal resistor
is connected properly.
Check that the cable length is
within the specification range.
Check the communication speed
of each device.
Check to see if a cable is broken.
Check that the terminal resistor
is connected properly.
Check that the cable length is
within the specification range.
Please check that the node
registered into the Scan list is
connected.
Replace the module.
Check that the specified voltage
is supplied to the power module
of the PLC.
Please check that I/O assignment
is done.
Color
Green
3
6
7