Omron CPM1 Programming Manual

203
Bit Control Instructions Section 5-8
In the second example (Diagram B), IR 10000 will be turned ON when IR
00001 goes ON and will remain ON (even if IR 00001 goes OFF) until IR
00002 goes ON.
5-8-3 KEEP – KEEP(11)
Limitations Any output bit can generally be used in only one instruction that controls its
status.
Description KEEP(11) is used to maintain the status of the designated bit based on two
execution conditions. These execution conditions are labeled S and R. S is
the set input; R, the reset input. KEEP(11) operates like a latching relay that is
set by S and reset by R.
When S turns ON, the designated bit will go ON and stay ON until reset,
regardless of whether S stays ON or goes OFF. When R turns ON, the desig-
nated bit will go OFF and stay OFF until reset, regardless of whether R stays
ON or goes OFF. The relationship between execution conditions and
KEEP(11) bit status is shown below.
Flags There are no flags affected by this instruction.
00000
Diagram A
00002
RSET 10000
Diagram B
SET 10000
00001
Address Instruction Operands
00000 LD 00000
00001 OUT 10000
Address Instruction Operands
00000 LD 00001
00001 SET 10000
00002 LD 00002
00003 RSET 10000
10000
B: Bit
IR, SR, AR, HR, LR
Ladder Symbol Operand Data Areas
S
R
KEEP(11)
B
S execution condition
R execution condition
Status of B

Omron CPM1 Specifications

General

Brand	Omron
Model	CPM1
Category	Controller
Language	English