Appendix d – Rockwell Automation 57C442 Data Highway Plus Interface Module User Manual
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D-1
Appendix D
Data Highway Plus Interface Module
7-Segment LED Error Codes
The following error codes may be displayed on the 7-segment display.
.0
EPROM checksum failure
0
Gateway parameter error
.1
RAM checksum failure
1
Reply TNS error
.2
RAM AA failure
.3
RAM SS failure
3
Duplicate station detected
.4
RAM address line failure
4
Module not ready
.5
RAM address line clear failure
6
Invalid station address on thumbwheels
7
Module has not been enabled (register 5, bit 0)
.8
Data Highway Plus initialization failure
9
Module re-start in progress
.A
Board Reset signal
.b
Local watchdog failure
C
Local port disconnected
.d
AutoMax Processor watchdog failure
.E
Power failure
.F
Module failure
All errors except 3, 4, 6, 7, and C are fatal errors and indicate a malfunctioning
module.