Rockwell Automation 1771-SPI,D17716.5.122 SPI PROTOCOL INTERFACE - Manual (Page 58)

Interpreting Diagnostic Information
In LEDs and Error Codes
Chapter 5
5-8
Error Codes Returned in CDS
Error codes returned in CDS deal with communication with devices on the
SPI network, and fall into two categories:
commands not supported or not executed by the device
(return of 7000 series codes)
communication network error
(return of 8000 series codes)
7000 Series Error Codes for Commands Not Supported or Not Executed
A device on the SPI link can detect either of these conditions and indicate
them to the SPI module. In response, the SPI module can return a 7000
code to the processor if you set corresponding enable bits in MCC word 1:
Bit # Title SPI Module Reports
11 Cmd Not Supported
(CNS)
0 = Command Not Supported errors from all devices
1 = errors are not reported
15 Cmd Not Executed
(CNE)
0 = Command Not Executed errors from all devices
1 = errors are not reported
Each error code is defined as listed in Table 5.D.
Table 5.D
7000 Series Error Codes for Commands Not Supported or Not Executed
This table describes errors in data coming from the device to the SPI module.
Code Type of Error The SPI module returns this bit set = 1 when it detects:
7007 invalid data outĆofĆrange data from the device (SPI module discards it.)
7006 device not ready device temporarily cannot execute the command. Try later.
7005 reserved for future use always set = 1
7004 always returned reset = 0
7003 command not supported that the device on the link cannot support the command
7002 command not executed that the device on the link cannot execute the supported
command (typically returned with another error bit)
7001 invalid header an error in the header from the device (may be due to noise)
7000 communication error a framing error, a CRC error, or a protocol violation