When a value other than 0x0FFFF is written to this Register, the index is updated. If the Window Mode for this log indicates a Paused Mode (0x00000 or 0x00001 in Register 38209), Historical Log 1 is paused, preventing the addition of new records while the log is being accessed. A 30-second timer is initiated on these writes. Should the timer run out (a new index is not written within 30 seconds), Historical Log 1 will be allowed to continue logging.

When a value of 0x0FFFF is written to this Register, it signifies that the port is finished accessing Historical Log 1, the 30-second timer is canceled and Historical Log 1 will be allowed to continue logging.

Should multiple ports access the same log simultaneously, the log will be paused while either 30-second timer is running. The log will be allowed to continue logging only when both ports time-out or write 0x0FFFF to their Index Register.

Historical Log 2 (38146): When read, this Register returns the Window Index for Historical Log 2 to access Historical Log 2 on this port. Functionality follows the Historical Log 1 Window Index (38145).

Limit Trigger Log (38147): When read, this Register returns the Index used by the Limit Trigger Log Window to access Limit Trigger Log on this port. Functionality follows the Historical Log 1 Window Index (38145).

Limit Snapshot Log (38148): When read, this Register returns the Index used by the Limit Snapshot Log Window to access Limit Snapshot Log on this port. Functionality follows the Historical Log 1 Window Index (38145).

Digital Input Log (38149): When read, this Register returns the Index used by the Digital Input Log Window to access Digital Input Log on this port. Functionality follows the Historical Log 1 Window Index (38145).

Digital Input Snapshot Log (38150): When read, this Register returns the Index used by the Digital Input Snapshot Log Window to access Digital Input Snapshot Log on this port. Functionality follows the Historical Log 1 Window Index (38145).

Digital Output Log (38151): When read, this Register returns the Index used by the Digital Output Log Window to access Digital Output Log on this port. Functionality follows the Historical Log 1 Window Index (38145).

Digital Output Snapshot Log (38152): When read, this Register returns the Index used by the Digital Output Snapshot Log Window to access Digital Output Snapshot Log on this port. Functionality follows the Historical Log 1 Window Index (38145).

Flicker Log (38153): When read, this Register returns the Index used by the Flicker Log Window to access Flicker Log on this port. Functionality follows the Historical Log 1 Window Index (38145).

Waveform Trigger Log (38154): When read, this Register returns the Index used by the Waveform Trigger Log Window to access Waveform Trigger Log on this port. Functionality follows the Historical Log 1 Window Index (38145).

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GE EPM 9650/9800 manual