Omron CPM1 Programming Manual

341
Special Instructions Section 5-26
Description PLS2(––) is used to output a specified number of CW or CCW pulses from
port 1 or 2. The pulse output accelerates to the target frequency at a specified
rate and decelerates at the same rate. (Pulse output stops at 100 Hz.)
The following equations show how to calculate the approximate acceleration/
deceleration time T
1
and running time T
2
. Both times are in seconds.
Note 1. Although T
1
and T
2
will vary slightly depending on the operating condi-
tions, the number of pulses output will be accurate.
2. PLS2(––) will not operate if pulses are already being output from the spec-
ified port. Check the pulse output flags (AR 0515 for port 1 and AR 0615
for port 2) before executing PLS2(––).
3. Refer to 1-3 Pulse Output Function (CQM1 Only) for more details.
Operand Settings P specifies the port where the pulses will be output. Pulses are output from
port 1 when P=001, and pulses are output from port 2 when P=002.
D specifies whether the output signal is clockwise (CW) or counter-clockwise
(CCW). The output is CW when D=000 and CCW when D=001.
The content of C determines the acceleration/deceleration rate. During accel-
eration or deceleration, the output frequency is increased or decreased by the
amount set in C every 4.08 ms. C must be BCD from 0001 to 0200 (10 Hz to
2kHz).
The content of C+1 specifies the target frequency. C+1 must be BCD from
0010 to 5000 (100 Hz to 50 kHz).
The 8-digit content of C+3,C+2 determines the number of pulses that will be
output. C+3, C+2 must be BCD between 0000 0001 and 1677 7215.
Flags ER: There is an error in the operand settings.
The CPU Unit is not a CQM1-CPU43-EV1.
The PC Setup is not set for pulse output.
The target frequency, acceleration/deceleration rate, and number of
pulses are incorrect. (Number of pulses < T
1
× Target frequency)
PLS2(––) is executed in an interrupt subroutine while a pulse I/O or
high-speed counter instruction is being executed in the main program.
A data area boundary has been exceeded.
Indirectly addressed DM word is non-existent. (Content of *DM word is
not BCD, or the DM area boundary has been exceeded.)
AR 0515: Port 1 output flag. ON when pulses are being output from port 1.
AR 0615: Port 2 output flag. ON when pulses are being output from port 2.
Target frequency
T
1
T
1
T
2
100 Hz
T
1
≅ 0.004 ×
Acceration / deceleration rate
Target frequency
T
2
≅
Number of pulses – (T
1
× Target frequency)
Target frequency

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)