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LTDVE4CH-20 | INSTRUCTIONS MANUAL
Preferred DNS server
192.168.0.2
Alternate DNS server
192.168.0.2
Modbus address
32
Modbus/TCP port
502
Modbus/UDP port
502
Table 12: default parameters for Ethernet communication
The IP address, subnet mask and DHCP use flag are some of the controller parameters and can be
changed using any of the available interfaces. The factory configuration uses the static IP address
192.168.0.32. The factory settings can be restored using the INIT button (see
description of the INIT button functionalities).
10. Visual indicators
There are sixteen LEDs on the top panel of the controller and two LEDs embedded in the Ethernet
RJ45 jack. Some of them are used to show that power supplies are available, others are pulsed
when inputs and output are activated, while others are used to indicate activity on the communication
interfaces or fault conditions.
The exact meaning of each of the LEDs is listed in
. The LEDs of the
top panel of the controller are identified by a unique label printed next to them. The Ethernet ACT
and LINK LEDs are identified by their position relative to the Ethernet RJ45 jack. The ACT LED is at
the left of the jack, while the LINK LED is at the right.
Number Name Colour
Description
1
PWR
Green Stable when logic supply is present
2
RUN
Green Blinks periodically during normal operation
3
ERR
Red
Stable when power supply missing, blinks in error conditions
4
LD1
Yellow Pulses when light output 1 is activated
5
LD2
Yellow Pulses when light output 2 is activated
6
LD3
Yellow Pulses when light output 3 is activated
7
LD4
Yellow Pulses when light output 4 is activated
8
TR1
Green Pulses when synchronization input 1 is activated
9
TR2
Green Pulses when synchronization input 2 is activated
10
TR3
Green Pulses when synchronization input 3 is activated
11
TR4
Green Pulses when synchronization input 4 is activated
12
SH1
Yellow Pulses when synchronization output 1 is activated
13
SH2
Yellow Pulses when synchronization output 2 is activated
14
SH3
Yellow Pulses when synchronization output 3 is activated
15
SH4
Yellow Pulses when synchronization output 4 is activated
16
485
Yellow Blinks when there is activity on the serial interface
17
ACT
Yellow Blinks during Ethernet data transmission
18
LINK
Green Stable when Ethernet connection established
Table 13: meaning of the LEDs