Справочник Пользователя для Mitsubishi Electronics -LD62D
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CHAPTER 11
TROUBLESHOOTING
This chapter describes errors that may occur while using the high-speed counter module, and those troubleshooting.
The high-speed counter module does not support the following functions performed in the system monitor.
• Display of the "H/W Information" window
• Display of errors and the corresponding actions in the "Module's Detailed Information" window
• Module error collection function
• Display of errors and the corresponding actions in the "Module's Detailed Information" window
• Module error collection function
11.1
Error Information
(1) Checking errors in the system monitor
[Diagnostics]
[System Monitor]
(2) Error information that the high-speed counter module detects
Description and cause
Where to check the error information
Action
Overflow error
• In linear counter, an up pulse has
been counted from the present
value 2147483647.
value 2147483647.
• In linear counter, a down pulse has
been counted from the present
value -2147483648.
value -2147483648.
Module status display in the system monitor window
• No display: No overflow detected (no error)
• Module error: Overflow detected
• Module error: Overflow detected
Execute a preset to clear the overflow error.
Overflow detection flag
The following value is stored in CH Overflow
detection (Un\G8, Un\G40).
The following value is stored in CH Overflow
detection (Un\G8, Un\G40).
• 0: No overflow detected
• 1: Overflow detected
• 1: Overflow detected
Module error status bit of the module information
read by the UNIRD instruction
read by the UNIRD instruction
• 00: No overflow detected (no error)
• 10: Overflow detected (moderate error)
• 10: Overflow detected (moderate error)
An icon showing a moderate error is
displayed if an overflow error is detected.
displayed if an overflow error is detected.