Status Word - Advanced Micro Controls Inc. 1700 Series User Manual

Status Word

The status word is broken down into two bytes. The low byte, bits 0 – 7, is used to report
hardware faults. The format of this byte is shown in figure 6.3. The high byte, bits 8 –15, is
used to report programming errors. Table 6.4 lists the error codes and a brief description of the
their causes.
15 14 13 12 11
Software Error Codes
Program
Error
Invalid
Command
Invalid
Message
Length
Message
Ignored
Invalid
Transducer
Number
Invalid
Mode
Invalid
Parameter
Number
Invalid SF
Invalid CO
Invalid LO
Invalid PV
Invalid TR
6-6
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Chapter 6
10 9 8 7 6 5 4
Hardware Errors
0 0 0
Figure 6.3 Hardware Error Bits
Error Comments
Byte
The Command Word of an instruction is incorrect. Usually occurs when a
21h
data word is interpreted as a command word. For example, a Transducer 1
Setup instruction specifies three new parameters and four are included. The
fourth instruction will be interpreted as a command word.
22h 1) The final instruction of the block transfer write file does not contain
enough data words to complete the instruction. Check the length
parameter of the block transfer write.
2) An instruction follows any Read Status instruction.
You attempted to write a program instruction to the module while it was
24h
reporting a programming error.
You attempted to write parameter values for a transducer channel that does
25h
not exist on your module. Example: Writing to transducer 4 on a 1732.
Occurs when you send a Read Status instruction to the module that is not in
26h
read status mode.
Occurs if the Read Status instruction sent to the module requests more
27h
parameters than the block transfer read file can transmit. Example:
Requesting two parameter values from a 1731.
A programmed scale factor is out of range.
41h
A programmed circular offset is out of range.
42h
43h A programmed linear offset is out of range.
44h A programmed preset value is out of range.
45h A programmed tachometer response value is out of range.
Table 6.4 Programming Error Codes
Backplane Programming
3 2 1 0 Bit Numbers
Transducer 1 fault
Transducer 2 fault
Transducer 3 fault
Transducer 4 fault
Reserved for future use
"0" – Transmitting position/tach data
"1" – Transmitting read status data
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