9. Program
75
●Se V_ICMD receive message (error message: undefined command)
[Settings]
ttings the R
<h>
+“ICMD”+&(W(1),4)+<c>+<t>
(5) (1) (2) (3) (4)
No. Code Remarks
(1) <h> (Header) H Type: Code, Data: SO
(2) “ICMD” Constant ASCII
(3) &(W(1),4) (W(1),4): Converts 4-byte data and stores it in the [first
receive word specified with the PMCR instruction
operand + 1 word].
&: Forward direction hexadecimal conversion (Converts
the receive message from ASCII code into hexadecimal,
and stores the receive data from the lower byte)
(4) <c> (Check code)
Type: LRC (Horizontal parity) (0)(1-byte BIN)
Setting range: 2 and 3
(5) <t> (Terminator)
Type: Code, Data: CR+LF
[Response format of error message (undefined command)]
This is the response format of an error message which is received by the SCU Unit from
the destination device according to the setting of RV_ICMD.
Command Number of
byes
Remarks
Start code 1 Fixed: SOH (#01)
Command code 4 Fixed: ”ICMD” (Destination device command, undefined
command)
Response code 4 #140X (X=0 to 9, A to F ”ICMD code)
Destination device error code
(Refer to 8.8. Error Code List.)
FCS 2 The horizontal parity is calculated based on the data
after the start code (SOH) through just before the FCS.
The result is converted in 2 ASCII code characters and
they are added to the message.
Terminator 2 Fixed: CR+LF (#0D0A)
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