Rockwell Automation 1772-L8_LW_LWP_LX_LXP,D17726.5.8 User Manual - Manual (Page 479)

Quick Reference
Appendix E
E-35
Internal Control Functions
Diagnostic Word: Word 027
Bits in word 027 are used by the processor for internal control functions.
This Bit: Stores this Information:
00 (Battery low) - set when the battery is low.
01 (EEPROM) - set indicates that EEPROM transferred at powerĆup.
This bit is always reset (0) when the processor powers down
02 (STI too long) - set indicates subroutine execution time plus program
transition time exceed service time.
03 Reserved.
04
05
06
07
Reserved for Data Highway - set when the processor is connected to
the line and actively communicating with the Data Highway.
10 Report Generation message 1 enable bit
11 Report Generation message 2 enable bit
12 Report Generation message 3 enable bit
13 Report Generation message 4 enable bit
14 Report Generation message 5 enable bit
15 Report Generation message 6 enable bit
16 Report Generation busy bit
17 Report Generation done bit
Diagnostic Word 027