SBEVCOM-33忻州市

SBEVCOM-33忻州市
逻辑关系图反映了控制过程中控制作用与被控对象的活动，也反应了输入与输出的关系。 3. 绘制各种电路图 绘制各种电路的目的，是把系统的输入输出所设计的地址和名称联系起来。这是很关键的一步。在绘制 PLC 的输入电路时，不仅要考虑到信号的连接点是否与命名一致，还要考虑到输入端的电压和电流是否合适，也要考虑到在特殊条件下运行的可靠性与稳定条件等问题。 　在接地电阻方面，对plc也许要求不高，但对dcs一定要在几欧姆以下（通常在4欧姆以下）。模拟量隔离也是非常重要的。 　　相同i/o点数的系统，用plc比用dcs，其成本要低一些（大约能省40%左右）。plc没有操作站，它用的软件和硬件都是通用的，所以维护成本比dcs要低很多。如果被控对象主要是设备连锁、回路相对很少，采用plc较为合适。如果主要是模拟量控制、并且函数运算很多， 采用dcs。dcs在控制器、i/o板、通讯网络等的冗余方面，一些 运算、行业的特殊要求方面都要比plc好的多。plc由于采用通用监控软件，在设计企业的管理信息系统方面，要容易一些。

ALERTON TX-651-PULSE  TX651PULSE
Alerton TX-651-PULSE Ibex Tux Pulse TX651PULSE
Alerton TX-651-PULSE
ALERTON TX-450  TX450
ALERTON TX-450  TX450
Alerton TX-450 Ibex DDC Controller 4-Inputs 5-Digital Triac Outputs TX450 
Alerton TX-450 Ibex DDC Controller 4-Inputs 5-Digital Triac Outputs TX450 
ALERTON TX-16160  TX16160
Alerton TX-16160 Industrial Control System
Alerton TX-16160 Ibex Input/Output Controller TX16160
Alerton TX-16160 Bactalk controller  RETAIL $3000.00
ALERTON TX SA 651 QTY OF THREE FOR PARTS
ALERTON TUX-784ST  TUX784ST
ALERTON TUX-450ST  TUX450ST
ALERTON TUX APLC DDC CONTROLLER Central Plant AHU Chilled Water Hot Water
ALERTON TUX 784ST TUX784ST
ALERTON TUX 450ST TUX450ST(S4-T-4B)
ALERTON TS-6000  TS6000
ALERTON TS-3004-OA-10  TS3004OA10
ALERTON TS-3004-MA-10  TS3004MA10
ALERTON TS-2104-PH-10-AA
ALERTON TS-2104-PH-03  TS2104PH03
Alerton TS-2104-MH-10-AA Immersion Temperature Sensor
Alerton TS-2100 YJ-2100 Immersion Temperature Sensor
ALERTON TS-2008-FB-03-AA  TS2008FB03AA
Alerton TS2008FB03AA Industrial Control System
Alerton TS-1050 Bactalk Microtouch Wall Sensor with Wallplate 
Alerton TS 2104 PQ 10 Immersion Temperature Sensor
ALERTON TECHNOLOGIES LANVIEW GC-LVIEW GCLVIEW 24 VAC @ 10 VA RS-232 AC-2670
ALERTON TECHNOLOGIES APLC 2
ALERTON TECHNOLOGIES APLC
Alerton Sensor -- TS-2006-FB-03-AA -- 
ALERTON PROBE-6IN  PROBE6IN
ALERTON PROBE-10IN  PROBE10IN
Alerton Pressure Transmitter PS-22P Series 24 volt
ALERTON PCL-I  PCLI
ALERTON Operator Interface Control MICROVIEW GC-MVIEW Excellent Working
ALERTON Operator Interface Control MICROVIEW GC-MVIEW Excellent Working
Alerton MS4-TH Temperature And Humidity Sensor MS4TH  in box HVAC Thermostat
Alerton MS4-TH Temperature And Humidity Sensor MS4TH 
ALERTON MS-1020-  MS1020
ALERTON MS-1020-  MS1020
ALERTON MS-1010-  MS1010
ALERTON MS-1010-  MS1010
ALERTON MS-1010  MS1010
ALERTON MICROTOUCH  MICROTOUCH
Alerton MDM-100 Modem
ALERTON LSI-ARCNET  LSIARCNET
Alerton LSI-16 Modem 33.6K Card for BACtalk Line System Integrator Qty
ALERTON LANVIEW GC-LVIEW 24VAC Excellent Working Condition
ALERTON LAN System Integrator Excellent Working Condition BacTALK
ALERTON LAN System Integrator Excellent Working Condition BacTALK
ALERTON LAN System Integrator Excellent Working Condition BacTALK
ALERTON IBW-LAN-R1  IBWLANR1
ALERTON IBW-LAN  IBWLAN
Alerton IBW-ETH-ADP Ibex Ethernet Adapter LAN Interface Controller IBWETHADP
Alerton IBW-ETH-ADP Ibex Ethernet Adapter
Alerton IBW-ETH-ADP Ibex Ethernet Adapter
Alerton IBW-ETH-ADP Ethernet Adapter
ALERTON IBEX-3500  IBEX3500
Alerton IBEX/BACnet Modem 100 Communication Module
Alerton Ibex TX-APLC DDC APLC Controller TXAPLC  Great Working Condition
Alerton Ibex TX-16160 DDC Input/Output Controller I/O TX16160 
Alerton Ibex TX-16160 DDC Controller TX16160 
Alerton IBEX TUX-65 Digital Controller Excellent Condition
Alerton IBEX TUX-65 Digital Controller
Alerton IBEX TUX-450 Digital Controller Excellent Condition
ALERTON IBEX TECHNOLOGIES TX-V 24VAC LOAD 0.5A MAX TXV  IN BOX
Alerton Ibex Software Key Dongle for Windows 10 Unit for Hardware Parallel Port
Alerton Ibex Software Key Dongle for Windows 10 Unit for Hardware Parallel Port
ALERTON IBEX FOR WINDOWS SOFTWARE KEY 10 UNIT DONGLE  BUY IT CHEAP HERE
Alerton Honeywell I-100 BACnet MS/TP BACnet/IP HVAC Controllers Global Control
Alerton Honeywell BCM-MS/TP BACnet IP HVAC Controllers Global Control. See Notes
Alerton Honeywell BCM-MS/TP BACnet HVAC Controllers Global Control. See Note
Alerton Honeywell BCM-ETH Global Controller See Notes. Serial Connection Works!
Alerton Honeywell BCM-ETH BACnet IP HVAC Controllers Global Control. See Notes
Alerton GC-MVIEW Operator Interface Control Panel Microview
Alerton FST-100 Bactalk Network Connection Tool FST100
ALERTON Fiber Optic Link Good Condition 60 Day warranty
Alerton Fiber Optic Link
ALERTON EXP-2200  EXP2200