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50 Rockwell Automation Publication DNET-IN001B-EN-P - January 2012
Appendix A 1756 DeviceNet Status Indicators and Data Structures
81 The controller has set the scanner to the Faulted mode. The
Command bit also indicates a DeviceNet network fault state. The Bit O.CommandRegister.Fault for the scanner is on.
Correct the condition that caused the controller to set this bit
and then turn this bit off.
82 An error was detected in a sequence of fragmented I/O
messages from the device. Use RSNetWorx for DeviceNet software to do the following:
• Check the scan list of the device to make sure that its input
and output data sizes are correct.
• Check the configuration of the device.
83 The device returns error responses when the scanner attempts
to communicate with it. Use RSNetWorx for DeviceNet software to do the following:
• Check the accuracy of the scan list.
• Check the configuration of the device. The device may be in
another scanner’s scan list.
• Use the slave device’s documentation to verify that the
device supports the message type used by the scanner.
If the device’s message type does not match the scanner’s,
then use RSNetWorx for DeviceNet software to access the
scanner’s scan list and change the scanner’s message type
to one that is compatible with the slave device.
• Cycle power to the device.
84 The scanner is initializing the DeviceNet network. None. This code clears itself once the scanner attempts to
initialize all the devices on the network.
85 During runtime, the data size sent by the slave device does not
match the size in the corresponding scan list entry. Because variable length poll data is not supported, verify that
the slave device is functioning properly.
86 The device is in Idle mode, or not producing data, while the
scanner is in Run mode. • Check the configuration and status of the device.
• If you set up an interlock between two scanners
(controllers), make sure both scanners are in Run mode.
87 The scanner cannot listen to shared inputs from the slave
device because the owning scanner has not established
communication with that slave device. • Verify the primary scanner connection and configuration.
• Verify that the slave device is producing data.
88 The scanner cannot listen to shared inputs from the slave
device because I/O parameters, such as electronic key or data
size, for that slave device are configured differently between
this scanner and the owning scanner. In this scanner, reconfigure the I/O parameters for the shared
inputs scan list entry so that they match those same
parameters in the owning scanner.
89 The scanner failed to configure a device using the Automatic
Device Recovery (ADR) parameters. • Make sure that you installed a compatible device.
• If the offline configuration of the device does not match the
actual (online) configuration of the device, change the
offline configuration to match the online configuration.
90 The controller has set the scanner to Disabled mode. If desired, enable the scanner by locating the
O.CommandRegister.DisableNetwork bit on the command
register and turning it off.
91 Indicates a Bus-off condition likely due to cable or signal
errors. • Cycle power to the device.
• Verify that all devices are set to the same communication
rate.
• Check DeviceNet cabling to make sure no short circuits
exist between CAN (blue and white) wires and power or
shield (black, red, and shield) wires.
• Check the media system for the following noise sources:
– Close proximity to high-voltage power cable
– Incorrect or no termination resistor
– Improper grounding
– Noise produced from another device on the network
– Incorrect data for the network
Table 7 - Status Codes
Status Code Description Recommended Action