Omron CPM1 Programming Manual

275
Conversion Instructions Section 5-19
The following diagram shows the source word, S, converted to R according to
the line defined by the point (P1, 0) and slope
∆Y/∆X.
The result can be calculated by first converting all signed hexadecimal values
to BCD and then using the following formula.
Flags ER: Indirectly addressed DM word is non-existent. (Content of *DM word
is not BCD, or the DM area boundary has been exceeded.)
P1 and P1+2 are not in the same data area, or other setting error.
CY: ON when the result, R, is negative.
EQ: ON when the result, R, is 0000.
Example When 05000 is turned ON in the following example, the signed binary source
data in 001 (#FFE2) is converted to BCD according to the parameters in
DM 0000 to DM 0002. The result (#0018) is then written to LR 00 and CY is
turned ON because the result is negative.
S
Value after conversion
(BCD)
R
Value before conversion
(Signed hexadecimal)
X-intercept
∆X
∆ Y
R = × (S–P1)
∆X
∆Y
@SCL2(––)
DM 0000
001
05000
LR 00
Address Instruction Operands
00000 LD 05000
00001 @SCL2(––)
001
DM 0000
LR 00
DM 0000 FFFD
DM 0001 0003
DM 0002 0002
IR 001 FFE2
LR 00 0018
FFFD
3
2
CY=1
FFE2
–0018
CY flag is turned ON because
the conversion result is negative.
R = × (FFE2–FFFD)
0003
0002
= × (–1B) = –18
3
2

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)