CPM2A_OPERATION MANUAL (W352-E1-3) (986749), страница 4
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. . . . . . . . . . . .1-2-2 CPU Unit, Expansion Units, and Expansion I/O Units . . . . . . . . . . . . . . . . . . . . .Structure and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3-1 CPU Unit Structure . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3-2 Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3-3 Operating Mode at Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . .1-3-4 PC Operation at Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3-5 Cyclic Operation and Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . .Functions Listed by Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Comparison with the CPM1A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Preparation for Operation . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .2278881010111112131618241SectionCPM2A Features and Functions1-11-1CPM2A Features and Functions1-1-1 CPM2A FeaturesThe CPM2A PCs incorporate a variety of features in a compact Unit, includingsynchronized pulse control, interrupt inputs, pulse outputs, analog settings, anda clock function. Also, the CPM2A CPU Unit is a stand-alone Unit that can handle a broad range of machine control applications, so it is ideal for use as a builtin control unit in equipment.The full complement of communications functions provide communications withpersonal computers, other OMRON PCs, and OMRON Programmable Terminals. These communications capabilities allow the user to design a low-cost distributed production system.The CPU Unit contains 20, 30, 40, or 60 I/O pointsand Expansion I/O Units can be added to provide atotal I/O capacity of up to 120 I/O points.
Analog I/OUnits, Temperature Sensor Units, and CompoBus/SI/O Link Units can also be connected.Peripheral PortProgramming Devices are compatible withother models of OMRON PCs. This portcan also be used for Host Link or no-protocol communications.RS-232C PortThis port can be used for a Host Link,no-protocol, 1:1 PC Link, or 1:1 NT Linkcommunications.Basic FunctionsCPU Unit VariationsThe CPM2A PCs are one-piece PCs with 20, 30, 40, or 60 built-in I/O terminals.There are 3 types of outputs available (relay outputs, sinking transistor outputs,and sourcing transistor outputs) and 2 types of power supplies available(100/240 VAC or 24 VDC).Expansion I/O UnitsUp to 3 Expansion I/O Units can be connected to the CPU Unit to increase thePC’s I/O capacity to a maximum of 120 I/O points.
There are 3 types of Expansion I/O Units available: a 20-point I/O Unit, an 8-point Input Unit, and an 8-pointOutput Unit. The maximum I/O capacity of 120 I/O points is achieved by connecting three 20-point I/O Units to a CPU Unit with 60 built-in I/O terminals.Analog I/O UnitsUp to 3 Analog I/O Units can be connected to provide analog inputs and outputs.Each Unit provides 2 analog inputs and 1 analog output, so a maximum of 6 analog inputs and 3 analog outputs can be achieved by connecting 3 Analog I/OUnits.
(Time-proportional control can be performed by combining the analog I/Opoints with the PID(––) and PWM(––) instructions.)• The analog input range can be set to 0 to 10 VDC, 1 to 5 VDC, or 4 to 20 mAwith a resolution of 1/256. (The open-circuit detection function can be usedwith the 1 to 5 VDC and 4 to 20 mA settings.)• The analog output range can be set to 0 to 10 VDC, –10 to 10 VDC, or 4 to20 mA with a resolution of 1/256.Temperature SensorUnitsA Temperature Sensor Unit can be connected to provide up to 6 inputs for temperature input from sensors, such as thermocouples or platinum resistance2SectionCPM2A Features and Functions1-1thermometers. The PID(––) instruction can be used with a Temperature SensorUnit for easy temperature monitoring.CompoBus/S I/O LinkUnitsCompoBus/S I/O Link Units can be connected to make the CPM2A a Slave Device in a CompoBus/S Network.
The I/O Link Unit has 8 input bits (internal) and8 output bits (internal).The CompoBus/S Network provides distributed CPU control based on a “PC +compact PC” configuration, which is an improvement on the earlier distributedI/O control based on a “PC + remote I/O” configuration.
The distributed CPUcontrol makes equipment modular, so designs can be standardized, specialneeds can be addressed, and modules can be replaced easily in the event of abreakdown.CompoBus/S Master Unit(or SRM1 CompoBus/S Master Control Unit)Master PCCPM2A (Slave) CompoBus/S I/O Link UnitCompoBus/SDistributed CPU controlShare ProgrammingDevicesThe same Programming Devices, such as Programming Consoles and SupportSoftware, can be used for the C200H, C200HS, C200HX/HG/HE, CQM1,CPM1, CPM1A, CPM2C, and SRM1 (-V2) PCs, so existing ladder program resources can be used effectively.Built-in Motor Control CapabilitySynchronized PulseControl(Transistor Outputs Only)Synchronized pulse control provides an easy way to synchronize the operationof a peripheral piece of equipment with the main equipment.
The output pulsefrequency can be controlled as some multiple of the input pulse frequency, allowing the speed of a peripheral piece of equipment (such as a supply conveyor)to be synchronized with the speed of the main piece of equipment.CPM2AEncoderMotor driver MotorPulses are output as a fixed multiple of the input frequency.High-speed Counters andInterruptsThe CPM2A has a total of five high-speed counter inputs. The one high-speedcounter input has a response frequency of 20 kHz/5 kHz and the four interruptinputs (in counter mode) have a response frequency of 2 kHz.The high-speed counter can be used in any one of the four input modes: differential phase mode (5 kHz), pulse plus direction input mode (20 kHz), up/downpulse mode (20 kHz), or increment mode (20 kHz).
Interrupts can be triggeredwhen the count matches a set value or falls within a specified range.The interrupt inputs (counter mode) can be used for incrementing counters ordecrementing counters (2 kHz) and trigger an interrupt (executing the interruptprogram) when the count matches the target value.Easy Position Controlwith Pulse Outputs(Transistor Outputs Only)CPM2A PCs with transistor outputs have two outputs that can produce 10 Hz to10 kHz pulses (single-phase outputs).When used as single-phase pulse outputs, there can be two outputs with a frequency range of 10 Hz to 10 kHz with a fixed duty ratio or 0.1 to 999.9 Hz with avariable duty ratio (0 to 100% duty ratio).3CPM2A Features and FunctionsSection1-1When used as pulse plus direction or up/down pulse outputs, there can be justone output with a frequency range of 10 Hz to 10 kHz.High-speed Input Capabilities for Machine ControlHigh-speed InterruptInput FunctionThere are four inputs used for interrupt inputs (shared with quick-response inputs and interrupt inputs in counter mode) with a minimum input signal width of50 µs and response time of 0.3 ms.
When an interrupt input goes ON, the mainprogram is stopped and the interrupt program is executed.Quick-response InputFunctionThere are four inputs used for quick-response inputs (shared with interrupt inputs and interrupt inputs in counter mode) that can reliably read input signalswith a signal width as short as 50 µs.Stabilizing Input FilterFunctionThe input time constant for all inputs can be set to 1 ms, 2 ms, 3 ms, 5 ms,10 ms, 20 ms, 40 ms, or 80 ms. The effects of chattering and external noise canbe reduced by increasing the input time constant.Other FunctionsInterval Timer InterruptsThe interval timer can be set between 0.5 and 319,968 ms and can be set to generate just one interrupt (one-shot mode) or periodic interrupts (scheduled interrupt mode).Analog SettingsThere are two controls on the CPU Unit that can be turned to change the analogsettings (0 to 200 BCD) in IR 250 and IR 251. These controls can be used to easily change or fine-tune machine settings such as a conveyor belt’s pause time orfeed rate.Calendar/ClockThe built-in clock (accuracy within 1 minute/month) can be read from the program to show the current year, month, day, day of the week, and time.
The clockcan be set from a Programming Device (such as a Programming Console) or thetime can be adjusted by rounding up or down to the nearest minute.Long-term TimerTIML(––) is a long-term timer that accommodates set values up to 99,990 seconds (27 hours, 46 minutes, 30 seconds). When combined with the SECONDSTO HOURS conversion instruction (HMS(––)), the long-term timer provides aneasy way to control equipment scheduling.Analog PID ControlThe PID(––) instruction can be used with an Analog I/O Unit to control analogI/O.Complete Communications CapabilitiesHost Link4A Host Link connection can be made through the PC’s RS-232C port or Peripheral port.
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