Led Specification - Hitachi HIDIC EH-150 Applications Manual

6.6

LED Specification

Outlook of LED
N S M S STAT U S
DEVICENET
(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 6.6 LED Specification
Symbol
NS
MS
STATUS
EH-IOCD
None
Table 6.7 MS/NS LED Specification
Flashing in
Lit in Green
Green
1
―
―
Table 6.8 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
Communication board hardware
error
No power supply to the PLC/
waiting for module initialization
Chapter 6 Slave Controller Specifications
Description
Indicates the status of the network.
Indicates the status of the communication
interface board.
Indicates the status of the PLC interface
board.
Not used
Lit in Red
2 4
― ―
― ―
6-4
Flashing in
Turned off
Red
5
―
―
Action to take
Confirm that the DeviceNet master
is working normally.
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.
Replace the module.
Check that the specified voltage is
supplied to the power module of the
PLC.
Check that the LINK is assigned in
the I/O assignment for the CPU.
Color
Green/red
Green/red
Green/red
―
3
6
7