Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers - Manual (Page 275)

1 Publication 1785-UM012D-EN-P - July 2005
Appendix
B
Processor Status File
Processor status data is stored in data file 2.
S:0 - S:2
IMPORTANT
For more information about any of these topics, see the
description in this manual or the documentation for your
programming software.
This Word Stores
S:0 Arithmetic flags
• bit 0 = carry
• bit 1 = overflow
• bit 2 = zero
• bit 3 = sign
S:1Processor status and flags
S:1/00 RAM checksum is invalid at power-up
S:1/01 Controller in run mode
S:1/02 Controller in test mode
S:1/03 Controller in program mode
S:1/04 Controller uploading to memory module
S:1/05 Controller in download mode
S:1/06 Controller has test edits enabled
S:1/07 Mode select switch in REMOTE position
S:1/08 Forces enabled
S:1/09 Forces present
S:1/10 Controller controllerr successfully uploaded to memory module
S:1/11 Performing online programming
S:1/12 Not defined
S:1/13 User program checksum calculated
S:1/14 Last scan of ladder or SFC step
S:1/15 Controller running first program scan or the first scan of the next
step in an SFC