Instructions Directly Affecting The Rlo - Siemens CPU 412-1 Instruction Manual

Instructions Directly Affecting the RLO

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