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Receiving Explicit Messages Section 9-2
• CPU Operating Mode (Attribute ID = 64 Hex)
Changes the CPU Unit operating mode.
The Attribute Values are as follows:
0001 Hex: PROGRAM mode; 0002 Hex: MONITOR mode;
0004 Hex: RUN mode
Note The specified code for the above operating modes are 1-word (2-byte
data, and are specified with the low byte first. For example, for PRO-
GRAM mode, the code is specified as 01 Hex followed by 00 Hex. Ac-
cordingly, the low to high bytes for the above codes are set as high
to low bytes in I/O memory, when setting the codes as data for oper-
and S of CMND(490).
• Clearing CPU Unit Errors (when Attribute ID = 65 Hex)
Clears any fatal or non-fatal errors in the CPU Unit. Sets the error clear
code to Attribute Value. The error clear codes are listed in the following
table.
Note Error clear codes are 1-word (2-byte) data, so the above codes are
specified with the low byte first. The low to high bytes for the above
codes are set as high to low bytes in I/O memory, when setting the
codes as data for operand S of CMND(490). For example, to specify
battery error 00F7 Hex, specify the error code as F7 Hex followed by
00 Hex, as shown in the following diagram.
Error code
(Hex)
Data cleared
FFFE Current error (clears the highest priority error)
0008B Interrupt task error
009A Basic I/O error
009B PLC Setup error
02F0 Inner Board non-fatal error
0300 to 035F Special I/O Unit error
00A0 to 00A1 SYSMAC BUS error
0500 to 055F Special I/O Unit settings error
00E7 I/O verification error
When registered and actual I/O tables are different
When disconnecting or connecting I/O Units
00F7 Battery error
0200 to 020F CS/CJ-series CPU Bus Unit error (last 2 digits are binary code for
the Unit No.)
For parity errors generated when data transferred between CS/CJ-
series CPU Bus Unit and CPU Unit
For watchdog timer errors in CS/CJ-series CPU Bus Unit
0400 to 040F CPU Bus settings error (last 2 digits are binary code for the Unit
No.)
System error (FAL): FAL instruction executed
4101 to 42FF
10 65 F7 0000
C4
(2F)
Class ID
Attribute ID
Instance ID
Service Code
Attribute Value
The class ID depends on the unit version.
Version 2.0: The class ID is C4.
Version 1.0: The class ID is 2F.