9905-003 WOODWARD
通信程序的設計
為了充分利用計算機數據處理的強大功能，我們可以采用計算機有優先權的方式，在計算機上編寫程序來實現計算機與PLC的通信， 計算機向PLC發出命令發起通信，PLC自動返回響應。本文中采用VB來編寫計算機與PLC間的通訊程序。在VB中提供了通信控件—應用通信控件(MSCOMM)，實現通過串行端口傳送和接受的功能。
下面介紹MSCOMM控件的屬性:
*CommPort:設定通信連接端口代號，程序必須指定所要使用的串行端口號，Windows系統使用所設定的端口與外界通信。
SMC INR-498-011C Thermo Chiller Tested
Cosam Entec 1200 Temperature Control Chiller BCU-D152RS1-TEL As-Is
FST Inc FSTC-CD252 Recirculating Chiller Temperature Control Unit
SMC INR-497-001B Dual Channel Thermo Chiller LCD Display Not Tested
Applied Materials AMAT 1 Heat Exchanger 0010-70067 Rev.F untested
AMAT-1 Applied Materials Heater Exchanger 0010-76543 untested as-is
Applied Materials AMAT-1 Heater Exchanger Rev.H 0010-70067 untested as-is
Daikin UBRP3AMX Brine Chilling Unit CoolREF Heat Exchanger Tested
Applied Materials AMAT 1 Heat Exchanger 0242-02163 Rev.D For Parts AS-IS
Trebor 2472-AF Heater 2472-DI untested as-is
Trebor 2472-AD Heater untested as-is
AE Sekidenko OR4000T Optical Fiber Thermometer 955-3001-02 New 0190-33422
Risshi Co. Chiller ELC101-AOZ new 0190-31779 10GPM 15kW 220VAC
SMC INR-498-012C Thermo Chiller not as-is
Coherent Innova Heat Exchanger I328C untested
SMC INR-499-201 Thermo Chiller Heat Exchanger INR-499-201-X02?1 Tested
Lasemtech BCU-L252RS5-TEA?M2 Chiller Temperature Control System Tested As-Is
Lasemtech ENTEC1200 Temperature Control System BCU L252RSU2-TEAM1
HX-150 Neslab 304216060207 Recirculator Chiller AMAT 0010-00570
Entec 1200 Lasemtech BCU-L252RSU2-TE?AM1 Chiller Temperature Control System As-Is
SMC INR-498-P195 Thermo Chiller INR-498-011A As-Is
M and W Systems RPC17-W-CS-DT-L?I-SG-AA-19 Chiller Temperature Controller 4000
Neslab 304229060204 Refrigerated Recirculator Chiller Coolflow HX-150
Neslab 304216060201 Refrigerated Recirculator Chiller Coolflow HX-150
Advanced Thermal Sciences 4083480-001 Temp Control Unit 1231-CCN-GL-004 As-Is
Lasemtech BCU-E210D3-AMAT Dual Chiller Coolend Glycol Supercool 0190-19277 As-Is
Neslab 386105021704 Recirculating The收緩沖區中的字符數。 |
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