AV6A
8
Store the resulting configuration into the scanner module.
Storing/Saving Encoder Parameters to EEPROM
To store the current encoder operating parameters into non-volatile
memory:
Send message [(master MAC-ID) 0x32 0x23 0x01]. A new allocation
is then required to resume receiving position values from the
encoder.
Other Parameters
Contact Nidec-Avtron or review the EDS file for additional
parameters, diagnostic registers, cam and programmable limit
switch functionality and other advanced features.
DEVICENET TROUBLESHOOTING
For DeviceNet: disconnect the power connection, then ensure there
are no short circuits between any of the signal or power wires or
shield.
Viewing on oscilliscope: for DeviceNet the transmit and receive
signal pairs should change state rapidly as the controller transmits
messages to the encoder and the encoder replies. Transmission
rates vary, but these messages can be extremely short and typically
require scope triggering to spot them.
For DeviceNet, ensure termination resistors are in place (or switched
on) at each end of the cabling system, and that no termination
resistors are in placed or activated in the middle of the system.
Remove the connections to the master controller and all devices,
or power down all devices. Measure the resistance between the
communication wires [Example DeviceNet-measure between
CAN_L and CAN_H]. The value should be ~1/2 of the termination
resistor value on the network. For DeviceNet, this value should be
>50 ohms, <65 ohms. If the resistance is greater than the limit, a
termination resistor is missing from the network. If the resistance is
less than the limit, there are incorrect termination resistors switched
on or connected to the system.
DeviceNet Diagnostic LEDs
LED
Status
Meaning
MS
Green
Power OK, Status OK
Flash Green Then
Flash Red
LED test at Power-Up
1X Flash Green
Encoder Configuration Missing
or Incorrect. Encoder in Standby
Mode.
1X Flash Red
Recoverable Network Fault
Red
Encoder Malfunction
Off
No Power
NS
Green
Status OK, Connected
Red
Link Failure (Duplicate MAC or
Bus Off)
Flash Green Then
Flash Red
LED test at Power-Up.
If Not at Power-Up, Network
Access Error
1X Flash Green
Encoder online (passed Dup_
MAC_ID) test, but no connection
to other devices
1X Flash Red
Communications timeout
Off
Encoder Offline, has not passed
Dup_MAC_ID