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主机PC与各从机的通信以单片机的串行通信方式3进行通信。方式3为波特率可变的9位数据（除1位起始位“0”和1位停止位“1”之外）异步通信方式，是多机通信中用得**多的方式。PC与多AT89C2051单片机的通信软件设计关键在于对单片机的串行控制寄存器SCON的正确编程以及对PC串行口接口的灵活使用。
当AT89C2051工作在方式3时，传送一帧信息共11位：1位起始位（D0=0），8位数据位（D1～D8），1位可编程位（D9）和1位停止位（D10）。其中附加的第9位D9作为“地址帧”和“数据帧”的识别标志位。此位数据在发送端由串行控制寄存器的TB8位产生，在接收端由自动传送到SCON的RB8位中。如果D9=TB8=1，则说明此帧信息为地址，否则为数据。串行控制寄存器SCON中有一位多机通信控制位SM2，当SM2=1时只接收地址帧，当SM2=0时既可接收地址帧也可接收数据帧。 IC697ALG324IC697ALG324
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BALDOR 0086351C
BALDOR 10513C ConTROL BOARD
BALDOR 10513D ConTROL BOARD
BALDOR 10516C DIGISYN BOARD
BALDOR 1086421 INTERFACE BOARD
BALDOR 12802 POWER BOARD
BALDOR 150279-1 W/B DETECTOR BD
BALDOR 154423 168A DC DRIVE
BALDOR 22001 DC MOTOR ConTROL BOARD
BALDOR 25187B-001 POWER SUPPLY
BALDOR 5009 POWER SUPPLY
BALDOR 601A100-1 TACH GENERATOR
BALDOR 601A100-2 TACH GENERATOR
BALDOR 601A156 TACH GENERATOR
BALDOR 602090/602158 ConTROL ASSEMBLY
BALDOR 602090-103 SERVO CONTROL
BALDOR 614081 AC SERVO base
BALDOR 614-35-110-S001 SERVO DRIVE
BALDOR 712-47-175-S001 3HP AC DRIVE
BALDOR 712-510-175S001 15HP AC DRIVE
BALDOR 714-24-110-S001 SERVO DRIVE
BALDOR 714-24-110-S007 SERVO DRIVE
BALDOR 714-24-140 SERVO DRIVE
BALDOR 714-35-110-S006 SERVO DRIVE
BALDOR 714-47-150-S000 20HP 460V AC DR
BALDOR 82751 PULSE MASTER
BALDOR 838003 GATE DRIVE BD
BALDOR 83901 ConTROL BOARD
BALDOR 842-1136EF 105A DC DRIVE
BALDOR 842-46 30A DC DRIVE
BALDOR 84902 PCB
BALDOR 8645 INTERFACE BOARD
BALDOR 897122C-00 PC BOARD
BALDOR 89712C-00 PCB
BALDOR 914L-35-2701KB0 25HP 460V AC DR
BALDOR 914Q-36-2701KB0 25HP 460V AC DR
BALDOR A49095 DC DRIVE
BALDOR B71 ELECTRonIC BRAKE
BALDOR BC110 SPEED CONTROL
BALDOR BC140 SPEED CONTROL
BALDOR BC140-FBR SPEED CONTROL
BALDOR BC141 SPEED CONTROL
BALDOR BC142 SPEED CONTROL
BALDOR BC154 SCR CONTROL
BALDOR BC155 SPEED CONTROL
BALDOR BC-155 DRIVE CONTROL
BALDOR BC160 3HP 230V DC DR
BALDOR BC19H205-CO 5HP 230V DC DR
BALDOR BC19H210-CO 10HP 230V DC DR
BALDOR BC19H215-CO 15HP 230V DC DR
BALDOR BC19H220-CO 20HP 230V DC DR
BALDOR BC19H225-CO 25HP 230V DC DR
BALDOR BC19H240-CO 40HP 230V DC DR
BALDOR BC19H250-CO 50HP 230V DC DR
BALDOR BC19H260-CO 60HP 230V DC DR
BALDOR BC19H275-CO 75HP 230V DC DR
BALDOR BC19H4100-CO 100H 460V DC DR
BALDOR BC19H410-CO 10HP 460V DC DR
BALDOR BC19H4125-CO 125H 460V DC DR
BALDOR BC19H4150-CO 150H 460V DC DR
BALDOR BC19H4200-CO 200H 460V DC DR
BALDOR BC19H420-CO 20HP 460V DC DR
BALDOR BC19H4250-CO 250H 460V DC DR
BALDOR BC19H4300-CO 300H 460V DC DR
BALDOR BC19H430-CO 30HP 460V DC DR
BALDOR BC19H440-CO 40HP 460V DC DR
BALDOR BC19H450-CO 50HP 460V DC DR
BALDOR BC19H475-CO 75HP 460V DC DR
BALDOR BC200 DC SCR CONTROL
BALDOR BC201 DC SCR CONTROL
BALDOR BC202 1.5HP DC DRIVE
BALDOR BC20H205-CL 5HP 230V DC DR
BALDOR BC20H210-CL 10HP 230V DC DR
BALDOR BC20H215-CL 15HP 230V DC DR
BALDOR BC20H220-CL 20HP 230V DC DR
BALDOR BC20H225-CL 25HP 230V DC DR
BALDOR BC20H240-CL 40HP 230V DC DR
BALDOR BC20H250-CL 50HP 230V DC DR
BALDOR BC20H260-CL 60HP 230V DC DR
BALDOR BC20H275-CL 75HP 230V DC DR
BALDOR BC20H4100-CL 100H 460V DC DR
BALDOR BC20H410-CL 10HP 460V DC DR
BALDOR BC20H4125-CL 125H 460V DC DR
BALDOR BC20H4150-CL 150H 460V DC DR
BALDOR BC20H4200-CL 200H 460V DC DR
BALDOR BC20H420-CL 20HP 460V DC DR
BALDOR BC20H4250-CL 250H 460V DC DR
BALDOR BC20H4300-CL 300H 460V DC DR
BALDOR BC20H430-CL 30HP 460V DC DR
BALDOR BC20H4400-EL 400H 460V DC DR
BALDOR BC20H440-CL 40HP 460V DC DR
BALDOR BC20H4500-EL 500H 460V DC DR
BALDOR BC20H450-CL 50HP 460V DC DR
BALDOR BC20H4600-EL 600H 460V DC DR
BALDOR BC20H475-CL 75HP 460V DC DR
BALDOR BC211 DC SCR CONTROL
BALDOR BC212 DC SCR CONTROL
BALDOR BC213 DC SCR CONTROL
BALDOR BCWD140 SCR CONTROL
BALDOR BMC3538 .5HP DC DRIVE
BALDOR BMC3542 .75HP DC DRIVE
BALDOR BMC3546 1HP DC DRIVE
BALDOR BMC3554T 1.5HP DC DRIVE
BALDOR BMC3558T 2HP DC DRIVE
BALDOR BPS10-200-20-P PCB
BALDOR BPS20-300-120-80 BPS20P POWER SUPPLY
BALDOR BPS20-300-120-80-7 BPS20P POWER SUPPLY
BALDOR BPS20-300-60-20CAS BPS20P POWER SUPPLY
BALDOR BQ7016CC DYNAMIC BRAKE
BALDOR BQ7016CP DYNAMIC BRAKE
BALDOR BQ7030CC DYNAMIC BRAKE
BALDOR BQ7030CP DYNAMIC BRAKE
BALDOR BQ7055CC DYNAMIC BRAKE
BALDOR BQ7055CP DYNAMIC BRAKE
BALDOR BQ7080CC DYNAMIC BRAKE
BALDOR BQ7080CP DYNAMIC BRAKE
BALDOR BQ7135CC DYNAMIC BRAKE
BALDOR BQ7135CP DYNAMIC BRAKE
BALDOR BQ7160CC DYNAMIC BRAKE
BALDOR BQ7160CP DYNAMIC BRAKE
BALDOR BQ7250CC DYNAMIC BRAKE
BALDOR BQ7250CP DYNAMIC BRAKE
BALDOR BQ7420CC DYNAMIC BRAKE
BALDOR BQ7420CP DYNAMIC BRAKE
BALDOR BQ7600CC DYNAMIC BRAKE
BALDOR BQ7600CP DYNAMIC BRAKE
BALDOR BSC1005 BASIC MODULE
BALDOR BSC1005-24 BASIC MODULE
BALDOR BSC1005-24-HR BASIC MODULE
BALDOR BSC1102-24-700 DRIVE
BALDOR BSC1105 BASIC MODULE
BALDOR BSC1110 BASIC MODULE
BALDOR BSM100A-1150baseRVO MOTOR
BALDOR BSM100A-3150baseRVO MOTOR
BALDOR BSM100A-4150AA SERVO MOTOR
BALDOR BSM100B-1150AA SERVO MOTOR
BALDOR BSM100B-1150baseRVO MOTOR
BALDOR BSM100B-2150AA SERVO MOTOR
BALDOR BSM100B-2250AA SERVO MOTOR
BALDOR BSM100B-3150AA SERVO MOTOR
BALDOR BSM100B-3150baseRVO MOTOR
BALDOR BSM100B-3250baseRVO MOTOR
BALDOR BSM100B-4150AA SERVO MOTOR
BALDOR BSM100B-4250AA SERVO MOTOR
BALDOR BSM100N-1150AA SERVO MOTOR
BALDOR BSM100N-1250AA SERVO MOTOR
BALDOR BSM100N-2150AA SERVO MOTOR
BALDOR BSM100N-2250AA SERVO MOTOR
BALDOR BSM100N-3150AA SERVO MOTOR
BALDOR BSM100N-3250AA SERVO MOTOR
BALDOR BSM100N-4250AA SERVO MOTOR
BALDOR BSM50N-133AA SERVO MOTOR
BALDOR BSM50N-175AA SERVO MOTOR
BALDOR BSM50N-233AA SERVO MOTOR
BALDOR BSM50N-275AA SERVO MOTOR
BALDOR BSM50N-333AA SERVO MOTOR
BALDOR BSM50N-375AA SERVO MOTOR
BALDOR BSM63A-175baseRVO MOTOR
BALDOR BSM63A-275AA SERVO MOTOR
BALDOR BSM63A-275baseRVO MOTOR
BALDOR BSM63A-350AA SERVO MOTOR
BALDOR BSM63A-375baseRVO MOTOR
BALDOR BSM63N-133AA SERVO MOTOR
BALDOR BSM63N-150AA SERVO MOTOR
BALDOR BSM63N-175AA SERVO MOTOR
BALDOR BSM63N-233AA SERVO MOTOR
BALDOR BSM63N-250AA SERVO MOTOR
BALDOR BSM63N-275AA SERVO MOTOR
BALDOR BSM63N-333AA SERVO MOTOR
BALDOR BSM63N-350AA SERVO MOTOR
BALDOR BSM63N-375AA SERVO MOTOR
BALDOR BSM80A-150AA SERVO MOTOR
BALDOR BSM80A-175baseRVO MOTOR
BALDOR BSM80A-275baseRVO MOTOR
BALDOR BSM80A-375AA SERVO MOTOR
BALDOR BSM80A-375baseRVO MOTOR
BALDOR BSM80B-150AA SERVO MOTOR
BALDOR BSM80B-175AA SERVO MOTOR
BALDOR BSM80B-175baseRVO MOTOR
BALDOR BSM80B-250AA SERVO MOTOR
BALDOR BSM80B-275AA SERVO MOTOR
BALDOR BSM80B-275baseRVO MOTOR
BALDOR BSM80B-350AA SERVO MOTOR
BALDOR BSM80B-375AA SERVO MOTOR
BALDOR BSM80B-375baseRVO MOTOR
BALDOR BSM80N-133AA SERVO MOTOR
BALDOR BSM80N-150AA SERVO MOTOR
BALDOR BSM80N-175AA SERVO MOTOR
BALDOR BSM80N-233AA SERVO MOTOR
BALDOR BSM80N-250AA SERVO MOTOR
BALDOR BSM80N-275AA SERVO MOTOR
BALDOR BSM80N-350AA SERVO MOTOR
BALDOR BSM80N-375AA SERVO MOTOR
BALDOR BSM90A-175baseRVO MOTOR
BALDOR BSM90A-2150AA SERVO MOTOR
BALDOR BSM90A-375baseRVO MOTOR
BALDOR BSM90B-1150AA SERVO MOTOR
BALDOR BSM90B-1150baseRVO MOTOR
BALDOR BSM90B-2150AA SERVO MOTOR
BALDOR BSM90B-2250AA SERVO MOTOR
BALDOR BSM90B-3150AA SERVO MOTOR
BALDOR BSM90B-3150baseRVO MOTOR
BALDOR BSM90B-3250AA SERVO MOTOR
BALDOR BSM90N-1150AA SERVO MOTOR
BALDOR BSM90N-1250AA SERVO MOTOR
BALDOR BSM90N-175AA SERVO MOTOR
BALDOR BSM90N-2150AA SERVO MOTOR
BALDOR BSM90N-2250AA SERVO MOTOR
BALDOR BSM90N-275AA SERVO MOTOR
BALDOR BSM90N-375AA SERVO MOTOR
BALDOR BTS10-200-10-24 AC SERVO DRIVE
BALDOR BTS10-200-10R SERVO CONTROL
BALDOR BTS10-200-15R SERVO CONTROL
BALDOR BTS10-200-2 SERVO CONTROL
BALDOR BTS10-200-2.5P SERVO CONTROL
BALDOR BTS10-200-22.5R SERVO CONTROL
BALDOR BTS10-200-5-24 SERVO CONTROL
BALDOR BTS10-200-5-P SERVO CONTROL
BALDOR BTS10-2005P705 SERVO CONTROL
BALDOR BTS10-200-7 SERVO CONTROL
BALDOR BTS10-200-7.5RL SERVO CONTROL
BALDOR BTS-20-300-10-24 BTS20P
BALDOR BTS20-300-20 DRIVE
BALDOR BTS20-300-20-714 DRIVE
BALDOR BTS20-300-30-24-70 BTS20P
BALDOR BTS20-300-30-707 BTS20P
BALDOR BTS-20-300-30-PA 7 BTS20P
BALDOR BTS20-300-50-24 DRIVE
BALDOR BTS20-300-5-24-707 BTS20P
BALDOR CB10003C-04 DIG CTRL BOARD
BALDOR CB10026C-00 PCB
BALDOR CB20001C-02 ConTROL BOARD
BALDOR CB20003C-00 DIG CTRL BOARD
BALDOR CB20005C-01 DIG CTRL BOARD
BALDOR CB2000IC-02 ConTROL BOARD
BALDOR D70 TORQUE CONTROL
BALDOR D71-608 TORQUE CONTROL
BALDOR D72 DEFINITE PURPOSE CONTACTOR
BALDOR DBSC1015-AAA AC SERVO CTRL
BALDOR DBSC1115-BAA AC SERVO CTRL
BALDOR DBSC3007-GAAC AC SERVO CTRL
BALDOR DIG7000D DIGISYN BOARD
BALDOR DIG7000D720 DIGISYN BOARD
BALDOR EB0022AOOSP TRANSFORMER ASSEMBLY
BALDOR EB0062A00 CTRL/FEEDBACK
BALDOR EB0102A00 PCB
BALDOR EPCPNM30-1C PCB
BALDOR FCP6500C-00 PMC-2 CONTROL
BALDOR FVF190C-21 INVERTER 10/230
BALDOR FVF1910C-20 VECTOR DRIVE 10HP 230V
BALDOR ID10201-E 1HP 230V AC DR
BALDOR ID10202-E 2HP 230V AC DR
BALDOR ID10205-E 5HP 230V AC DR
BALDOR ID10401-E 1HP 460V AC DR
BALDOR ID10402-E 2HP 460V AC DR
BALDOR ID10405-E 5HP 460V AC DR
BALDOR ID11201-EB 1HP 230V AC DR
BALDOR ID11202-EB 2HP 230V AC DR
BALDOR ID11203-EB 3HP 230V AC DR
BALDOR ID11205-EB 5HP 230V AC DR
BALDOR ID11207-EB 7HP 230V AC DR
BALDOR ID11210-EB 10HP 230V AC DR