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2-38 TCP/IP Ethernet Communications for the Series 90™ PLC User's Manual
–
May 2002 GFK-1541B
2
States of the Series 90-30 CPU374 with Embedded TCP/IP Ethernet Interface
Ethernet Interface
Initializing
1
(approx. 2-6
seconds)
The Ethernet Interface is initialized by
Powering up the PLC
Storing a new configuration to the PLC with changes for the Ethernet Interface
Pressing the Restart pushbutton
Issuing a Station Manager RESTART command
Internal System Error occurring when Interface is operational
Diagnostics
Pass?
Waiting for
Configuration from
PLC CPU
(max. 2 seconds)
C
IP address
= 0.0.0.0
Operational
The LEDs are labeled from top to bottom as follows:
EOK
LAN
STAT
The symbols use for the LEDS i the chart are:
OFF
ON
Slow Blink; multiple slow blinking LEDS blink in
unison
Fast Blink
Traffic
(
blinks when there is traffic on the line.
z
∗
The process symbols use in this chart are:
Temporary condition; requires no intervention
Decision point during powerup
Interface State; normally the Interface remains in a
state unless there is user intervention.
Symbols
z
z
/
∗
/
z
/
E
Hardware
Failure
A
B
D
z
/
∗
/
No
No
Yes
3
Yes
IP Address
Received
4
Operational
Full support for client and server capanility
Uses user-defined Advanced Parameters
1
2
3
4
Yes
2
Software
Load
Load
Request or
Software
Corrupted?
No
Software Load caused by
Pressing the Restart pushbutton
Detection of corrupt software
Waiting for IP Address caused by
Not configuring Interface using configuration software
Configuring Interface with IP Address = 0.0.0.0
New CPU with no configuration
CPU failure to communication with Interface
Done
Continue to Operational State caused by
IP Address received over network
Waiting for
IP Address