Mitsubishi Electric Q01UCPU User Manual page 187

(8) Precautions
(a) Areas where sampling trace can be performed
The sampling trace can be performed from other stations on the network or serial communication module.
However, it cannot be performed from multiple devices simultaneously. It can be performed from one device to
the CPU module.
(b) Holding and clearing the trace setting
The trace setting (sampling trace file) registered with the CPU module is latched.
Even if the CPU module is powered off and then on or is reset, the sampling trace can be performed again with
the trace setting at registration.
However, the previous trace result cannot be read.
Also in the following cases of 1) to 4), even when the trigger condition of the sampling trace is established, the
latched trace setting will be cleared since the condition is not recognized as the trigger condition (SM800
(Trace preparation) turns off).
Register the trace setting again through a programming tool.
1) When selecting "Standard RAM" in "Target memory", configuring the setting that changes the local
device size in the standard RAM
the following operations
• The CPU module is powered off and then on.
• The CPU module is reset.
• The CPU module is set from STOP to RUN.
*1 The operation includes when a local device is created.
2) When selecting "Standard RAM" in "Target memory" and the sampling trace file is corrupt, either of the
following operations were performed.
• The CPU module is powered off and then on.
• The CPU module is reset.
3) When selecting "Memory card (RAM)" in "Target memory" while the SRAM card where the sampling
trace file has been registered is not mounted, either of the following operations were performed.
• The CPU module is powered off and then on.
• The CPU module is reset.
4) When selecting "Memory card (RAM)" in "Target memory" and the sampling trace file is corrupt, either
of the following operations were performed.
• The CPU module is powered off and then on.
• The CPU module is reset.
(c) Clearing trace execution status
The trace execution status can be cleared by either of the following operations.
• Remote latch clear (
• Latch clear by using the special relay and special register areas(
(d) Reading trace result in the STOP status
The trace result cannot be read while the CPU module is in the STOP status. Read the trace result while the
CPU module is in the RUN status.
*1
, writing parameters to the CPU module, and then performing any of
Page 135, Section 3.6.4)
CHAPTER 3 FUNCTIONS
Page 73, Section 2.7 (4) (a))
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