- 8 -
z
RS-232
# name
description
level
Dir.
Etc.
1
-
-
-
-
-
2
RXD
Receive Data
RS232
Input
Mandatory
3
TXD
Transmit Data
RS232
Output
Mandatory
4
DTR
Data Terminal Ready
-
-
DTR/DSR
loopback jumper
5 GND
Ground
Ground
-
Mandatory
6
DSR
Data Set Ready
-
-
DTR/DSR
loopback jumper
7
RTS
Request To Send
RS232
Output
Optional
8
CTS
Clear To Send
RS232
Input
Optional
9
-
-
-
-
-
Pin 4 and pin 6 will be loop-backed when JP2 is on. JP2 is inside of EZL-200L.
1.4.3.
LEDs
EZL-200L has 5 LEDs.
Each LED functions as follows:
Name Meaning Color
LED Status
Description
PWR
Power
Red
ON
Power is supplied
Blinking for
a second
IP is allocated but TCP connection is
not established
Blinking 4
times/sec
IP is not allocated
ON
TCP connection is established
STS
Status
Yellow
Rapidly
Blinking
ISP Mode
LINK
LAN
Link
Green
ON
Connected to ethernet
RXD LAN Rx Yellow
Blinking
There are data on the LAN
