ABB S800模块di880

di880

di880

步进指令是专为顺序控制而设计的指令。在工业控制领域许多的控制过程都可用顺序控制的方式来实现，使用步进指令实现顺序控制既方便实现又便于阅读修改。

FX2N中有两条步进指令：STL（步进触点指令）和RET（步进返回指令）。

STL和RET指令只有与状态器S配合才能具有步进功能。我们用每个状态器S记录一个工步，例STL S200有效（为ON），则进入S200表示的一步，开始执行本阶段该做的工作，并判断进入下一步的条件是否满足。

一旦结束本步信号为ON，则关断S200进入下一步，如S201步。RET指令是用来复位STL指令的。执行RET后将重回母线，退出步进状态。

2.状态转移图

一个顺序控制过程可分为若干个阶段，也称为步或状态，每个状态都有不同的动作。当相邻两状态之间的转换条件得到满足时，就将实现转换，即由上一个状态转换到下一个状态执行。

我们常用状态转移图描述这种顺序控制过程。用状态器S记录每个状态，X为转换条件。如当X1为ON时，则系统由S20状态转为S21状态。

状态转移图中的每一步包含三个内容：本步驱动的内容，转移条件及指令的转换目标。

步驱动Y0，当X1有效为ON时，则系统由S20状态转为S21状态，X1即为转换条件，转换的目标为S21步。

Aeroflex 6402 CDMA AIME Test Platform (1xEVDO)

Agilent 81142A High-Speed Serial Pulse Data Generator

HP/Agilent E4440A 3Hz - 26.5GHz Spectrum Analyzer PSA

HP/Agilent E4445A PSA Spectrum Analyzer, 3 Hz-13.2 GHz

HP/Agilent E4443A PSA Spectrum Analyzer, 3 Hz - 6.7 GHz

HP/Agilent 83496B Optical / Electrical clock recovery

HP/Agilent DSO81004B 10GHz 4CH 40GSa/s Infiniium Oscill

Spirent STR4500 GPS/SBAS Simulation System

HP/Agilent E5071B ENA Network analyzer 300KHz to 8.5GHz

HP/Agilent DSO80804B Infiniium oscilloscope: 8 GHz

Agilent N8974A Noise Figure Analyzer10MHz-6.7GHz

HP/Agilent E5071C ENA Network Analyzer

HP/Agilent E4438C ESG Vector Signal Generator

HP/Agilent E7402A EMC Spectrum Analyzer

HP/Agilent J1981A VQT Portable Analyzer

HP/Agilent 54855A 6GHz 4CH 20GSa/s Infiniium Oscillosco

HP/Agilent J1987B VQT Network Server

R&S FSIQ7 Signal Analyzer, 20 Hz to 7 GHz

HP/Agilent N8973A Noise Figure Analyzer10MHz-3GHz

Aeroflex IFR 3413 Signal Generator

Tektronix CSA7404 4.0 GHz 4CH Digital Phosphor Scope

Tektronix TDS7254B Digital Phosphor Oscilloscope

Anritsu MS2723B Handheld Spectrum Analyzer

HP/Agilent J1981B VQT Portable Analyzer

HP/Agilent E4428C ESG Analog Signal Generator 

TEKTRONIX TDS7704B Digital Sampling Oscilloscope, 7 GHz

Anritsu Radio Communication Analyzer MT8815B

TEKTRONIX TDS7704B Digital Sampling Oscilloscope 7 GHz

81130A-81132A-81132A Pulse Data Generator

HP/Agilent N5182A MXG RF Vector Signal Generator

Anritsu MT8815A RF Communication Test Set - HSDPA

HP/Agilent 4396B RF Network/Spectrum/Impedance Analyzer

HP/Agilent 8753E RF Network Analyzer, 30 kHz to 6 GHz

HP/Agilent E4405B ESA-E Spectrum Analyzer

HP/Agilent E4436B

HP/Agilent 54846B 2.25GHz 4CH 8GSa/s Infiniium Oscillos

Anritsu MS2721B Handheld Spectrum Analyzer

HP/Agilent 54853A Infiniium Oscilloscope

Spirent SR3452 CDMA Network Emulator

HP/Agilent MSO6104A Mixed Signal Oscilloscope

HP/Agilent 83712B Synthesized CW generator, 20 GHz

HP/Agilent MSO7054A Mixed Signal Oscilloscope

Keytek EMC Pro Advanced EMC Test System 

R&S FSEA30 Spectrum Analyzer 20 Hz to 3.5GHz

Advantest R3273 100 Hz to 26.5 GHz Spectrum Analyzer

HP/Agilent 8902A Measuring Receiver

Marconi 6200B 10 MHz to 20 GHz Microwave Test Set

HP/Agilent E4404B 9kHz - 6.7GHz Spectrum Analyzer

HP/Agilent 83712A Synthesized CW generator, 20 GHz

NoiseKen ESS-2000 Electrostatic Discharge Simulator

HP/Agilent MSO6054A Mixed Signal Oscilloscope

Anritsu MT9083A Access Master

HP/Agilent 54845B Infiniium Oscilloscope

Agilent 81104A-81105A-81105A Pulse Generator 80MHz

HP/Agilent 83711B Synthesized CW Generator, 20 GHz

HP/Agilent E5091A ENA Series Multiport Test Set

Tektronix TDS7054 Phosphor Oscilloscope

Tektronix TDS5054 DPO Oscilloscope, 4-Channel, 500 MHz

HP/Agilent 54830D 2+16 Channel Infiniium Oscilloscope

HP/Agilent 54831D 4+16 Channel Infiniium Oscilloscope

HP/Agilent E4436B 250kHz - 3GHz Signal Generator

HP/Agilent 8593E Portable Spectrum Analyzer

HP/Agilent 41501B Pulse Generator and Expander Unit

HP/Agilent 35670A FFT Dynamic Signal Analyzer

Spirent TAS 4500 FLEX RF Channel Emulator

Spirent TAS 5600 Universal Interference Emulator

Spirent GSS4100 GPS/BSAS Signal Generator

Advantest R3267 Spectrum Analyzer, 100 Hz to 8 GHz

Agilent 54754A Differential TDR/TDT module

HP/Agilent 89441A VSA with W-CDMA Capability, 2.65 GHz

Anritsu MW9076C OTDR 4 Wavelength Chromatic Dispersion

HP/Agilent 54832D 4+16-Channel, 1 GHz Oscilloscope

HP/Agilent N4431B RF Electronic Calibration Module

HP/Agilent N4693A Electronic Calibration Module

HP/Agilent 8561E Portable Spectrum Analyzer, to 6.5 GHz

HP/Agilent 8923B DECT Test Set

HP/Agilent 8514B S-Parameter Test Set

HP/Agilent 8596E Portable Spectrum Analyzer

Spirent TAS 5200 RF Converter

81654A Dual Fabry-Perot Laser Source, 1310nm & 1550nm

HP/Agilent 54832B 1GHz 4CH 4GSa/s Infiniium Oscilloscop

Tescom TC-3000A Bluetooth Tester

HP/Agilent 54825A Infiniium Oscilloscope: 4 Channels

HP/Agilent EMI System 8568B/85650A/85685A with 85867A 

HP/Agilent 85052C Precision Mechanical Calibration Kit

HP/Agilent E6000C Mini-OTDR

HP/Agilent E4433B - Digital RF Signal Generator

JDSU ANT-5 SDH Access Tester 

Spirent TAS5048 CDMA PLTS Test Configuration Unit

89431A 2 MHz to 2.65 GHz Downconverter

HP/Agilent 16200B External DC Bias Adapter

HP/Agilent E4433A Digital RF Signal Generator

HP/Agilent 81655A Laser Source Module (FP) 1310nm 13

HP/Agilent 8753C Network Analyzer, 30 kHz to 6 GHz

HP/Agilent 1682A Logic Analyzer

Agilent 1680AD 136-Channel Color Logic Analyzer

HP/Agilent 42942A Terminal Adapter, 40 Hz to 110 MHz

R&S SML03 - Signal Generator 9KHz to 3.3GHz

Spirent TAS4600A Precision C/N-C/I Generator

Agilent E4425B 250kHz - 3GHz Signal Generator

HP/Agilent DSO5052A Oscilloscope: 500 MHz, 2 channels

HP/Agilent E5100B High-Speed Network Analyzer

IFR/Aeroflex 2947 Communications Service Monitor

HP/Agilent N4691-60004 Electronic Calibration Module

HP/Agilent 16903A Logic Analysis System

HP/Agilent 86062C Lightwave Switch

HP/Agilent 8591C Cable TV Analyzer, 1 MHz to 1.8 GHz

HP/Agilent 42941A Impedance Probe Kit, 40 Hz to 110 MHz

HP/Agilent 6683A 5000 Watt System Power Supply

ACTERNA MTS5100E mini OTDR 1310 / 1550 nM

Marconi / Aeroflex 2947

HP/Agilent 5348A Microwave Counter Power Meter

HP/Agilent 81578A Optical attenuator pwr-ctrl angled

Agilent 8110A-81103A Pulse Pattern Generator, 150 MHz

Anritsu MT8850A Bluetooth Test Set

Enlarge

HP/Agilent 16752B Timing and State Module

Tektronix TLA704 Logic Analyzer Mainframe

HP/Agilent N4430A 4-port RF ECal Module, up to 6 GHz

Wavwtek 4400M Mobile Phone Tester

HP/Agilent 54641A 2-Channel, 350 MHz Oscilloscope

HP/Agilent 83434A 10 Gb/s Lightwave Receiver

HP/Agilent 85093C RF Electronic Calibration Module

HP/Agilent 8664A High-Performance Signal Generator

HP/Agilent 85033E-100/200/300/400 Calibration Kit

HP/Agilent 8510C Vector Network Analyzer

HP/Agilent 42851A Precision Q Adapter

HP/Agilent 85033D Calibration Kit, 3.5 mm

HP/Agilent 4140B Voltage Source 10V/100V 10mA

Advantest R3465 Spectrum Analyzer, 9KHz~8GHz

HP/Agilent 85051B Verification Kit, 7 mm

TESCOM TC-5901B Pneumatic RF Shield Box

IFR 2026Q CDMA Interferer MultiSource Generator

HP/Agilent 8648C 9 kHz - 3.2 GHz Signal Generator

YOKOGAWA DX230

HP/Agilent N4002A SNS Noise source 10MHz-26.5GHz 15dB

HP/Agilent 8991A Peak Power Meter 

HP/Agilent E4432A Digital RF Signal Generator

HP/Agilent E4431B - Digital RF Signal Generator

R&S SMIQ03B - Signal Generator 300KHz to 3.3GHz

Yokogawa DX230 Paperless Recorder

HP/Agilent 85134F Flexible Cable Set, 2.4 mm to 3.5 mm

HP/Agilent E4432A Digital RF Signal Generator

Tektronix TDS540 Digitizing Oscilloscope

HP/Agilent N1922A P-Series Wideband Power Sensor

Agilent 16442A Text Fixture for 4155C or 4156C

Keithley 238 HighCurrentSourceMeasureUnit/8006 Fixture

Fluke PM 6685 Universal Frequency Counter

HP/Agilent 16751B Timing and State Module