Omron CPM1 Programming Manual

297
Binary Calculation Instructions Section 5-21
UF: ON when the result is below –32,768 (8000).
(CQM1-CPU4@-E/-EV1 only)
Example The following example shows a four-digit addition with CY used to place either
#0000 or #0001 into R+1 to ensure that any carry is preserved.
In the case below, A6E2 + 80C5 = 127A7. The result is a 5-digit number, so
CY (SR 25504) = 1, and the content of R + 1 becomes #0001.
Note For signed binary calculations, the status of the UF and OF flags indicate
whether the result has exceeded the signed binary data range (–32,768
(8000) to +32,767 (7FFF)). (CQM1-CPU4@-EV1 only)
5-21-2 BINARY SUBTRACT – SBB(51)
Limitations DM 6144 to DM 6655 cannot be used for R.
Description When the execution condition is OFF, SBB(51) is not executed. When the exe-
cution condition is ON, SBB(51) subtracts the contents of Su and CY from Mi
CLC(41)
00000
ADB(50)
010
DM 0100
HR 10
MOV(21)
#0000
HR 11
MOV(21)
#0001
HR 11
TR 0
25504
25504
= R
= R+1
= R+1
Address Instruction Operands
00000 LD 00000
00001 OUT TR 0
00002 CLC(41)
00003 ADB(50)
010
DM 0100
HR 10
00004 AND NOT 25504
00005 MOV(21)
# 0000
HR 11
00006 LD TR 0
00007 AND 25504
00008 MOV(21)
# 00001
HR 11
R+1: HR 11 R: HR 10
000127A7
Au: IR 010
A6E2
Ad: DM 0100
80C5
+
Mi: Minuend word (binary)
IR, SR, AR, DM, HR, TC, LR, #
Su: Subtrahend word (binary)
IR, SR, AR, DM, HR, TC, LR, #
Ladder Symbols
Operand Data Areas
R: Result word
IR, SR, AR, DM, HR, LR
SBB(51)
Mi
Su
R
@SBB(51)
Mi
Su
R

Omron CPM1 Specifications

General

Model	CPM1
Manufacturer	Omron
Instruction Set	Basic and advanced instructions
Power Supply	100 to 240 VAC or 24 VDC
Communication	RS-232C
I/O Points	10, 20, 30, or 40 points depending on the model
Timers	Yes, multiple timers available
Counters	Yes, multiple counters available
Input Voltage	24V DC
Output Type	Relay or transistor
Number of I/O Points	10, 20, 30, 40
Communication Ports	RS-232C (optional)
Operating Temperature	0°C to 55°C
Storage Temperature	-20°C
Humidity	10% to 90% (non-condensing)
Dimensions	Varies depending on the model
Weight	Varies depending on the model
Program Memory	2048 steps (2K steps)