Rockwell Automation SA3100 Distributed Power System Drv Config,Program User Manual

Page 50

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3-12

SA3100 Drive Configuration and Programming

UDC Module Communication Status Register (Continued)

80/1080

DMA Format Error

Bit 4

The DMA Format Error bit is set if the length
of the received message does not match the
length encoded in the message itself.

Hex Value:

0010H

Sug. Var. Name:

N/A

Access:

Read only

UDC Error Code:

N/A

LED:

N/A

Transmitter Underrun

Bit 5

The Transmitter Underrun bit is set if the
USC reports a transmit first-in, first-out
underrun.

Hex Value:

0020H

Sug. Var. Name:

N/A

Access:

Read only

UDC Error Code:

N/A

LED:

N/A

CCLK Communication Synchronization Error

Bit 6

The CCLK Communication Synchronization
Error bit is set if two or more CCLK counter
ticks occur and no message is received.

Hex Value:

0040H

Sug. Var. Name:

N/A

Access:

Read only

Sug. Var. Name:

VDC_RUN@

UDC Error Code:

N/A

LED:

N/A

External Loopback Data Error

Bit 7

The External Loopback Data Error bit is set
during the UDC module loopback test if the
transmit message does not match the
receive message. This test is performed
only at power up or after a reset.

Hex Value:

0080H

Sug. Var. Name:

N/A

Access:

Read only

UDC Error Code:

N/A

LED:

N/A

Missed Gains

Bit 8

The Missed Gains bit is set if gain data from
the PMI could not be written because
memory was being written to when the gain
values were received.

Hex Value:

0100H

Sug. Var. Name:

N/A

Access:

Read only

UDC Error Code:

N/A

LED:

N/A

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