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3.4 Maintenance, Diagnostic Commands
C141-E167
3 - 99
Notes:
Exercise caution in the following points when using this command.
1. In order to avoid damage to the results of SEND DIAGNOSTIC command execution
(response data) from a command issued by another INIT during the interval until this
command is issued, either this command should be linked to the SEND DIAGNOSTIC
command when it is issued or the SEND DIAGNOSTIC command and this command
should be executed after the IDD is reserved.
2. Response data are valid only when “0” is specified in the “SelfTest (self test)” bit and after
a SEND DIAGNOSTIC command which specifies a specific operation in the parameter list
is executed, with the IDD transferring response data showing the execution results of the
latest SEND DIAGNOSTIC command. Also, even if this command is executed, the
response data in not cleared, and remains valid until the next SEND DIAGNOSTIC
command is executed.
3. If this command is issued when valid response data do not exist, the IDD transfers a
maximum of 4 bytes of X ‘00’ data to the INIT.
Figure 3.21 shows the format of response data transferred to the INIT from the IDD by this
command. The response data are configured from a 4-byte “Page header” and the “Page
parameters” which follow it.
Bit
Byte
76543210
0 Page Code
1 00000000
2 Page Parameter Length (MSB)
3 Page Parameter Length (LSB)
4
5
Parameter
n
Figure 3.21 RECEIVE DIAGNOSTIC RESULTS command: Response data configuration
• Page code
This field is the same value as the page code specified in the parameter list transferred form the
INIT by the SEND DIAGNOSTIC command executed last, and shows a code which identifies
the type of response data reported in this command.
~
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~
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Header
Page
Parameters