厦门泰尼电气有限公司
免费会员·8年
具体成交价以合同协议为准
140XCP60000
140XCP60000
1）每次扫描用户程序之前，都先执行故障自诊断程序。自诊断内容为I/O部分、存储器、CPU等，发现异常停机显示出错。若自诊断正常，继续向下扫描。
2）PLC检查是否有与编程器和计算机的通信请求，若有则进行相应处理，如接收由编程器送来的程序、命令和各种数据，并把要显示的状态、数据、出错信息等发送给编程器进行显示。如果有与计算机等的通信请求，也在这段时间完成数据的接受和发送任务。
3）PLC的*处理器对各个输入端进行扫描，将输人端的状态送到输入状态寄存器中，这就是输入采样阶段。
4）*处理器CPU将指令逐条调出并执行，以对输人和原输出状态（这些状态统称为数据）进行“处理”，即按程序对数据进行逻辑、算术运算，再将正确的结果送到输出状态寄存器中，这就是程序执行阶段。
5）当所有的指令执行完毕时，集中把输出状态寄存器的状态通过输出部件转换成被控设备所能接受的电压或电流信号，以驱动被控设备，这就是输出刷新阶段。
PLC经过这五个阶段的工作过程，称为一个扫描周期。完成一个周期后，又重新执行上述过程，扫描周而复始地进行。扫描周期是PLC的重要指标之一，在不考虑第二个因素（与编程器等通信）时，扫描周期T为：
T＝（读入一点时间×输入点数）+（运算速度×程序步数）＋（输出一点时间×输出点数）十故障诊断时间
显然扫描时间主要取决于程序的长短，一般每秒钟可扫描数十次以上，这对于工业设备通常没有什么影响。但对控制时间要求较严格，响应速度要求快的系统，就应该精确的计算响应时间，细心编排程序，合理安排指令的顺序，以尽可能减少扫描周期造成的响应延时等不良影响。
PLC与继电接触器控制的重要区别之一就是工作方式不同。继电接触器控制是按“并行”方式工作的，也就是说是按同时执行的方式工作的，只要形成电流通路，就可能有几个继电器同时动作。而PLC是以反复扫描的式工作的，它是循环地连续逐条执行程序，任一时刻它只能执行一条指令，这就是说PLC是以“串行”方式工作的。这种串行工作方式可以避免继电接触器控制的触点竞争和时序失配问题。
总之，采用循环扫描的工作方式也是PLC区别于微机的zui大特点，使用者应特别注意。
FN2N PLC 的规格及组成
FN2N系列PLC有FN2N16、FN2N32、FN2N48、FN2N64、FN2N80 、FN2N128等， FN2N 32，主要由以下几个部分构成：
1、控制单元：设有与编程器，计算机的接口，与I/O扩展单元相连的扩展口，输入、输出端子、电源输入和输出端子，FN2N有16个输入点和16个输出点。
2、扩展单元。
3、智能单元。
4、链接单元。
5、编程工具：使用MELSOFT GX Developer编程软件。
SIEMENS SIVOLT-A-Drehst?romsler 40A 6SG2412-3CA00-Z
Endress+Hauser Turbimax CUS31-W4E New
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SAM ELECTRONICS HS06-TCU NG3028G201 Board NEW
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Credence LT1101 Voltage Supply Board 671-4014-04 Spare
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Putzmeister Concrete Axial Piston Pump 067370003 New
ICHINOSE S-7000 SQC-6 Positioner Control Panel NEW
Welch Allyn 88042A Colposcope Factory Refurbished Spare
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PELCO SD4CBW-PG-E1-X Spectra IV Camera
BLUECOAT 8000-1 PROXY SERVER WEB ACCELERATOR 080-03103
Honeywell Pressure Instrument Druck DPI 701 installed
New Motorola SGLF4136FA JCDMA Broadband XCVR 1X CARD
MKS Baratron 220DD Differential Capacitance Manometer
Alca ISA-ES4 L2 Ethernet Board 3AL81879AA ES4-8FE
GUTOR 0C0075 and 0C0950 New
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Alca-Lucent O-24120G-A 3FE51185AB 7342 ISAM FTTU MDU
Rivertrace Engineering SMART ODME SVC Exchange Computer
B&R APC620 System Unit 5PC600.SX02-01 USED SPARE
Pressure Sensor 3876134-1 for AIRBUS A320 NEW
New IRONPORT C300 Security Sever Hardware
Honeywell 51196694-300/U1 Keyboard DCS spare
Simrad GC80/85 Compact Control Unit I-type 27101690 NEW
Honeywell 51405043-175 Digital Output 24v module NEW
Agilent G1978-60027 Charging Electrode Mount Assy NEW
VersaCAT TEST SYSTEM 3M Austin Metrology LAB USED
Brocade BR-TWS3-R250W Wide Area File Services Appliance
ASE2000-COM Communication Test Set by Applied Systems
Honeywell 51304672-150 Analog Output Spare forTDC 3000
Agilent G1315-60015 Micro High-Pressure Flow Cell NEW
Thrane & Thrane Sailor RT5022 VHF DSC NEW
SEL-387 Current Differential & Overcurrent Relay 110VDC
STUDER Distribution Box A943.045500 NEW
Alca 3BA23197BA CPU6 Board 40G 128M New
Alca 3AL78830AE card for 1660 1662SMC etc New
Alca 3AL98023AA ENHANCED SERGI for 1662SMC etc New
NeoScale CryptoStor Tape 700 SC702R NEW
NEW Callenberg SYMAP ECG ENGINE CONTROL GENERATOR
USSI Board N451910-5102 LM1601-9R LM3020-9 Ansaldo
New USSI Auxiliary Board PN: N12360401 Ansaldo
SIEMENS SIVOLT-A-Drehst?romsler 40A 6SG2412-3CA00-Z
Endress+Hauser Turbimax CUS31-W4E New
Nor NTN063FM S18K DDM 900 Filter 190-CY127-F1V5
Repaired Marconi LB16BG Board PLT40 UNPORT TRANS 2.5GB
SAM ELECTRONICS HS06-TCU NG3028G201 Board NEW
SAM ELECTRONICS HS10 Pulse Modulator NG3028G206 25KW
ECS CNC BASIC Controller 080H969 Spare part USED
New Alca MD128W1 3DB02136AA
Cooper Cleco 67ES135D4 Netsetter Inline Fixed Spindle
Lot of 2973pcs NEC UPD78F0102HMC-5?A4 F0102H 8-bit $1/pc
MAN B&W PMI SYSTEM Pressure Analyzer for 6S50MC-C
Shimadzu GC-14A GAS CHROMATOGRAPH USED SPL FID install
New OKUMA Drive Board UCMB2+F A911-2821 E4809-770-144-A
ABB SPAD346C3 SPAD 346 C3 DIFFERENTIAL RELAY PROTECTION
Hypertherm HT2000 041677 129160 Chopper used Spare
Credence LT1101 Voltage Supply Board 671-4014-04 Spare
TE-W Thermal Infrared Camera 160*120 core protype
Putzmeister Concrete Axial Piston Pump 067370003 New
ICHINOSE S-7000 SQC-6 Positioner Control Panel NEW
Welch Allyn 88042A Colposcope Factory Refurbished Spare
Refurbished ALSTOM STF-DL ANTENNA Ref: 23509 Rev. E
PELCO SD4CBW-PG-E1-X Spectra IV Camera
BLUECOAT 8000-1 PROXY SERVER WEB ACCELERATOR 080-03103
Honeywell Pressure Instrument Druck DPI 701 installed
New Motorola SGLF4136FA JCDMA Broadband XCVR 1X CARD
MKS Baratron 220DD Differential Capacitance Manometer
Alca ISA-ES4 L2 Ethernet Board 3AL81879AA ES4-8FE
GUTOR 0C0075 and 0C0950 New
Tektronix gigaBERT 1400 GENERATOR GB1400 Desktop Refurb
RICOH SR842 finisher stapler for MP6000 MP7000 MP8000
Alca-Lucent O-24120G-A 3FE51185AB 7342 ISAM FTTU MDU
Rivertrace Engineering SMART ODME SVC Exchange Computer
B&R APC620 System Unit 5PC600.SX02-01 USED SPARE
Pressure Sensor 3876134-1 for AIRBUS A320 NEW
New IRONPORT C300 Security Sever Hardware
Honeywell 51196694-300/U1 Keyboard DCS spare
Simrad GC80/85 Compact Control Unit I-type 27101690 NEW
Honeywell 51405043-175 Digital Output 24v module NEW
Agilent G1978-60027 Charging Electrode Mount Assy NEW
VersaCAT TEST SYSTEM 3M Austin Metrology LAB USED
Brocade BR-TWS3-R250W Wide Area File Services Appliance
ASE2000-COM Communication Test Set by Applied Systems
Honeywell 51304672-150 Analog Output Spare forTDC 3000
Agilent G1315-60015 Micro High-Pressure Flow Cell NEW
Thrane & Thrane Sailor RT5022 VHF DSC NEW
SEL-387 Current Differential & Overcurrent Relay 110VDC
STUDER Distribution Box A943.045500 NEW
Alca 3BA23197BA CPU6 Board 40G 128M New
Alca 3AL78830AE card for 1660 1662SMC etc New
Alca 3AL98023AA ENHANCED SERGI for 1662SMC etc New
NeoScale CryptoStor Tape 700 SC702R NEW
NEW Callenberg SYMAP ECG ENGINE CONTROL GENERATOR
USSI Board N451910-5102 LM1601-9R LM3020-9 Ansaldo
New USSI Auxiliary Board PN: N12360401 Ansaldo
SIEMENS SIVOLT-A-Drehst?romsler 40A 6SG2412-3CA00-Z
Endress+Hauser Turbimax CUS31-W4E New
Nor NTN063FM S18K DDM 900 Filter 190-CY127-F1V5
Repaired Marconi LB16BG Board PLT40 UNPORT TRANS 2.5GB
SAM ELECTRONICS HS06-TCU NG3028G201 Board NEW
SAM ELECTRONICS HS10 Pulse Modulator NG3028G206 25KW
ECS CNC BASIC Controller 080H969 Spare part USED
New Alca MD128W1 3DB02136AA
Cooper Cleco 67ES135D4 Netsetter Inline Fixed Spindle
Lot of 2973pcs NEC UPD78F0102HMC-5?A4 F0102H 8-bit $1/pc
MAN B&W PMI SYSTEM Pressure Analyzer for 6S50MC-C
Shimadzu GC-14A GAS CHROMATOGRAPH USED SPL FID install
New OKUMA Drive Board UCMB2+F A911-2821 E4809-770-144-A
ABB SPAD346C3 SPAD 346 C3 DIFFERENTIAL RELAY PROTECTION
Hypertherm HT2000 041677 129160 Chopper used Spare
Credence LT1101 Voltage Supply Board 671-4014-04 Spare
TE-W Thermal Infrared Camera 160*120 core protype
Putzmeister Concrete Axial Piston Pump 067370003 New
ICHINOSE S-7000 SQC-6 Positioner Control Panel NEW
Welch Allyn 88042A Colposcope Factory Refurbished Spare
Refurbished ALSTOM STF-DL ANTENNA Ref: 23509 Rev. E
PELCO SD4CBW-PG-E1-X Spectra IV Camera
BLUECOAT 8000-1 PROXY SERVER WEB ACCELERATOR 080-03103
Honeywell Pressure Instrument Druck DPI 701 installed
New Motorola SGLF4136FA JCDMA Broadband XCVR 1X CARD
MKS Baratron 220DD Differential Capacitance Manometer
Alca ISA-ES4 L2 Ethernet Board 3AL81879AA ES4-8FE
GUTOR 0C0075 and 0C0950 New
Tektronix gigaBERT 1400 GENERATOR GB1400 Desktop Refurb
RICOH SR842 finisher stapler for MP6000 MP7000 MP8000
Alca-Lucent O-24120G-A 3FE51185AB 7342 ISAM FTTU MDU
Rivertrace Engineering SMART ODME SVC Exchange Computer
B&R APC620 System Unit 5PC600.SX02-01 USED SPARE
Pressure Sensor 3876134-1 for AIRBUS A320 NEW
New IRONPORT C300 Security Sever Hardware
Honeywell 51196694-300/U1 Keyboard DCS spare
Simrad GC80/85 Compact Control Unit I-type 27101690 NEW
Honeywell 51405043-175 Digital Output 24v module NEW
Agilent G1978-60027 Charging Electrode Mount Assy NEW
VersaCAT TEST SYSTEM 3M Austin Metrology LAB USED
Brocade BR-TWS3-R250W Wide Area File Services Appliance
ASE2000-COM Communication Test Set by Applied Systems
Honeywell 51304672-150 Analog Output Spare forTDC 3000
Agilent G1315-60015 Micro High-Pressure Flow Cell NEW
Thrane & Thrane Sailor RT5022 VHF DSC NEW
SEL-387 Current Differential & Overcurrent Relay 110VDC
STUDER Distribution Box A943.045500 NEW
Alca 3BA23197BA CPU6 Board 40G 128M New
Alca 3AL78830AE card for 1660 1662SMC etc New
Alca 3AL98023AA ENHANCED SERGI for 1662SMC etc New
NeoScale CryptoStor Tape 700 SC702R NEW
NEW Callenberg SYMAP ECG ENGINE CONTROL GENERATOR
USSI Board N451910-5102 LM1601-9R LM3020-9 Ansaldo
New USSI Auxiliary Board PN: N12360401 Ansaldo
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厦门市海沧区滨湖一里1号楼7梯2008
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