Parker Hannifin
EPL Status
LED (Green)
EPL
Network State
Description P37384
Value
OFF Reset or Not Active The MN is off, initializing, or in
the reset state
0
Flickering Basic Ethernet The node is operating as a basic
Ethernet device, not EPL
1
Single flash Pre-Operational 1 The MN is asking for node
status and is configuring CNs,
but the full EPL cycles have not
started.
2
Double flash Pre-Operational 2 The full EPL cycles have
started, but not all node
configuration has finished. The
exchanged data is ignored.
3
Triple flash Ready to Operate The CN has responded to a
request from MN to enter this
state, but exchanged data is still
ignored.
4
ON Operational The network is now exchanging
valid data
5
Blinking Stopped The network has stopped 6
Table 73 EPL Network States and Corresponding Status LEDs
Table 74 indicates the possible values for the EPL operational errors, along
with a description of the error. If these errors occur, the error code is stored
in P37386 of network parameters. In some cases, the errors related to a
specific node. In those cases, the code is also stored in the EPL operation
error code parameter for the affected node. For EPLD0, this is P37637. The
most recently detected error will overwrite previous error codes in these
parameters. These parameter values are set to zero (no error) when the
network start is attempted.
EPL Operational Error Description P37386 Value
No errors 0
Management node Object Dictionary error during start 1
Invalid user supplied node count 2
Error in user supplied external node data 3
External node Object Dictionary error during start 4
Unexpected external node found during start 5
Error in SDO transfer 6
Internal Error in EPL cycle start 7
Table 74 EPL Operational Errors
174 ACR9000 Series Hardware Installation Guide
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