Appendix B

Processor Status File

Processor status data is stored in data file 2.

IMPORTANT

For more information about any of these topics, see the description in this manual or the documentation for your programming software.

S:0 - S:2

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

 

 

Publication 1785-UM012D-EN-P - July 2005

Page 275
Image 275
Bradley Smoker PLC-5 user manual Processor Status File, S0 S2, This Word Stores Arithmetic flags, Step in an SFC