620-0636
620-0636
620-0636
4、PLC控制器抗干扰的软件措施
由于电磁干扰的复杂性，仅采取硬件抗干扰措施是不够的，要用PLC控制器的软件抗干扰技术来加以配合,进一步提高系统的可靠性。采用数字滤波和工频整形采样、定时校正参考点电位等措施，有效消除周期性干扰、防止电位漂移。采用信息冗余技术，设计相应的软件标志位；采用间接跳转，设置软件保护等。例如对开关量输入信号，采用定时器延时的方式多次读入，结果一致再确认有效， 提高了软件的可靠性。
※： ※ 公司
Allen-Bradley 厦门泰尼电气有限公司
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Nortel 8672 ATM DS3 MDA Module DS1304002 Passport 8600
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Nortel DS 1-port OC-12 MMF MDA for 8683 POS
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Nortel DS 2-port OC-3 MMF MDA for 8683 POS
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Hughes Network Systems Coax to the Curb CTTS VIOP Sys?
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Spirent Adtech AX/4000 E1 (G.703) Interface pn 400309
F5 BIG-IP D51 Link Controller F5-BIG-5100,R,C,U App Sw
Lucent Springtide 5000 7000 ATM OC3c SMF 510-2005-01
Alcatel OC3/STM1 SH POS APPLIQUE 16PORT (APSH155E) 7670
Alcatel 3EZ00902DAA 01 8-Port Gig SX SFP 7470 Router
Ameritec AM2S-D Squirt AM2 Digital Bulk Call Generator ping
Agilent Z4425A LAN WAN Analyzer TS-4511/P set Make me an offer need to move
Netscreen 1000ES Multi-Gigabit Security Sys.
Cisco MGX AX-FRSM-4E1-C Frame Service Module CHAN E1 -
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Pirelli WCM-EM-M12 converter 2.5 Gbps
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Extreme 51034 Multiplexing (WDM) Module BD 6808
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ADC Cuda 2x8 DOCSIS LC 12000 CMTS C12-DM2X8-2.0 ping
Lucent APX8-SP-SC Controller w 320 Mb Flash APX8-S
Quintum Tenor D3200 E1/T1 PRI Digital Multipath Gateway
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Sonus CNA07 Redundancy Adapter NGPQGWGAA for GSX9000HD
Cisco IGX-UFM-C Universal Frame Relay Module C IGX8400
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Mayan Networks Unifier SMX SONET ADM Multiplexer We accept corporate PO's
Sandvine Policy Traffic Switch PTS8210-DCping
Nokia NIF4212KIT DUAL PORT X.21 CPCI V2 INTERFACE IP740
Extreme Black Diamond 12804 MSM-5 65010 Switch MGMT Mod
Cisco OC192/POS-IR-SC 1 Port OC192c/STM64c POS Edge LC
Nortel NT0H11EK OPTera 5100/5200 OCI 4:1 Sub Rate MUX
Nokia NIF4412KIT 2PORT 1000BSX MMD PMC 100 500 Firewall ping
Juniper Netscreen Secure Access 5000 NS-SA-5040A-MP ping
Cisco c6400 Universal Access Concentrator NLC-2OC3-SM
Sonus MNS-11 MNA-10 Cardset GSX9000
Cisco SPA-2XOC48POS/RPR 2-Port OC-48c/STM-16c POS/RPR Shared Port Adapter
Motorola RFS-6010 Wireless LAN Switch RFS-6010-1000-WR
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Smartbits Spirent POS-3504As SmartMetrics POS OC-48 SM
