Siemens CPU 414-2 - Instructions Directly Affecting the RLO

Instructions Directly Affecting the RLO
41
S7-400 Instruction List
A5E00267845-01
Instructions Directly Affecting the RLO
The following instructions have a direct effect on the RLO.
Instruc-
Address
Description
Length
in
Execution Time in s
Instruc-
tion
Address
ID
Description
Length
in
Words
CPU 412 CPU 414 CPU 416 CPU 417
CLR Set RLO to “0” 1 0.1 0.06 0.04 0.03
Status word for: CLR BR CC1 CC0 OV OS OR STA RLO /FC
Instruction evaluates: – – – – – – – – –
Instruction affects: – – – – – 0 0 0 0
SET Set RLO to “1” 1 0.1 0.06 0.04 0.03
Status word for: SET BR CC1 CC0 OV OS OR STA RLO /FC
Instruction evaluates: – – – – – – – – –
Instruction affects: – – – – – 0 1 1 0
NOT Negate RLO 1 0.1 0.06 0.04 0.03
Status word for: NOT BR CC1 CC0 OV OS OR STA RLO /FC
Instruction evaluates: – – – – – Yes – Yes –
Instruction affects: – – – – – – 1 Yes –
SAVE Save RLO to the BR bit 1 0.1 0.06 0.04 0.03
Status word for: SAVE BR CC1 CC0 OV OS OR STA RLO /FC
Instruction evaluates: – – – – – – – Yes –
Instruction affects: Yes – – – – – – – –