Rockwell Automation 2755-SNx Adaptascan Bar Code Readers - Manual (Page 220)

11–20 Communicating with a PLC-5 Processor on a DeviceNet Network
Publication 2755-6.8
Your 1771-SDN Scanner Module has a node address/status indicator
that uses numeric displays to indicate diagnostic information about
your module. The display flashes at approximately 1 second
intervals, depending on network traffic. The following table
summarizes the meanings of the numeric codes.
Numeric Code Indicates Take this action
Network Address
Displays 0 - 63
normal operation. The numeric display matches
the scanner’s node address on the DeviceNet
network. None.
70 module failed Duplicate Node Address check. Change the module channel address to another
available one. The node address you selected
is already in use on that channel.
71 illegal data in scan list table (node number
alternately flashes). Reconfigure the scan list table and remove any
illegal data.
72 slave device stopped communicating (node
number alternately flashes). Inspect the field devices and verify connections.
73 device key parameters do not match scan list
table entry (node number alternately flashes). Enter a matching scan list device ID.
74 data overrun on port detected. Modify your configuration and check for invalid
data. Check network communication traffic.
75 no network traffic has been detected. Verify connections.
76 no direct network traffic for module detected. None. The module hears other network
communication.
77 data size expected does not match scan lists
entry (node number alternately flashes). Reconfigure your module for the correct transmit
and receive data sizes
78 slave device in scan list table does not exist
(node number alternately flashes). Add the device to the network, or delete the
scan list entry for that device.
79 module has failed to transmit a message. Make sure that your module is connected to a
valid network. Check for disconnected cables.
80 module is in IDLE mode. Place PLC-5 in Run mode.
81 module is in FAULT mode. Check ladder program for cause of fault bits.
82 error detected in sequence of fragmented I/O
messages from device (node number alternately
flashes). Check scan list table entry for slave device to
make sure that input and output data lengths
are correct. Check slave device configuration.
83 slave device is returning error responses when
module attempts to communicate with it (node
number alternately flashes). Check accuracy of scan list table entry. Check
slave device configuration. Slave device may
be in another master’s scan list. Reboot slave
device.
84 module is initializing the DeviceNet channel. None. This code clears itself once module
attempts to initialize all slave devices on the
channel.
85 data size returned is bigger than 255 bytes
(node number alternately flashes). Configure device for smaller data size.
86 device is producing idle state data while the
scanner is in Run Mode. Check device configuration/slave node status.
88 this is not an error. At power-up and reset, the
module displays all 14 segments of the node
address and status display LEDs. None.
Table continued on the next page.
Channel 1
Node Address /
Status Indicator
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