Todays deals on Current Mode?

H717 Process Loop Calibrator Current Source w/HART Mode $425.00

H707 Process Loop Calibrator Current Source w/HART Mode $385.00

High-accuracy 0.025% Current 0-20mA 24V Process Loop Calibrator HART Mode 717 $324.00

400 PCS TL3844P TL3844 DIP-8 Current-Mode PWM Controllers /FREE Registered Mail $209.99

100 PCS TPS51120RHBR QFN32 TPS51120 51120 DUAL CURRENT MODE NEW /Free Reg.Mail $194.99

200 PCS UC3843BN UC3843B DIP-8 CURRENT MODE CONTROLLERS $159.99

200 PCS UC3845AN UC3845 DIP-8 Current Mode PWM Controller /FREE registered mail $139.99

150 PCS OB2263MP OB2263 SOT23-6 Current Mode PWM Controlle /FREE registered mail $121.99

90 PCS High-Voltage Current-Mode PWM Controller HV9112 $90.00

UCC3805D Low Power Current Mode PWM smd 95 per tube $69.95

Lot of 75 pcs ENICS Current Mode PWM Controller UC2844AD8 11V-25V 500KHz $54.00

Lot 50 chips UC2844AD8 8SOIC Current Mode PWM Controller $0.8/pc $39.99

10pcs TPS51120RHBR TPS51120 QFN32 DUAL CURRENT MODE IC Chip new $37.90

50 pcs. UC2842N UNITRODE 8-PIN DIP NEW CURRENT MODE PWM IC $24.99

UC1846J {UC1846} Current Mode PWM Controller IC (CDIP) $26.00

100PC UC3843 sop HIPERFORMANCE CURRENT MODE PWM CONTROL $29.99

50 PCS TL3844P DIP-8 TL3844 CURRENT-MODE PWM CONTROLLERS $29.99

50 PCS UC3845BN DIP UC3845B UC3845 HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER $29.99

55 PCS UC3843BN UC3843B DIP-8 CURRENT MODE CONTROLLERS $29.99

50 PCS OB2269CPC SOP-8 OB2269CP OB2269 Current Mode PWM Controller $29.29

20 NCP1203D60R2G 203D6 PWM Current-Mode Controller $26.99

203D6 PWM Current-Mode Controller 20PCS/LOT $25.00

100PC UC3842 SOP HIPERFORMANCE CURRENT MODE PWM CONTROL $24.99

10pcs TPS51120RHBR TPS51120 51120 QFN32 DUAL CURRENT MODE $24.99

11 PCS TPS51120RHBR QFN32 TPS51120 51120 DUAL CURRENT MODE NEW /Free Reg.Mail $23.99

2 PCS TPS51120RHBR TPS51120 QFN32 DUAL CURRENT MODE IC $22.99

10 PCS TPS51120RHBR QFN32 TPS51120 51120 DUAL CURRENT MODE IC NEW $21.89

1x MAX732MJA 5V/Adjustable Step-Up Current-Mode DC-DC Converters MAX732 $20.00

15 TI UCC2808ADTR-1 Low Power Current Mode Push-Pull PWM IC’s 8-SOIC $19.99

50pc UC3843 3843 DIP8 HIGH PERFORMANCE CURRENT MODE PWM $19.99

25 TI UCC28C43 BiCMOS LP Current Mode PWM Controller IC $12.99

5pcs TPS51120RHBR TPS51120 QFN32 DUAL CURRENT MODE IC Chip new $19.99

15 Texas Instru. UC2842 Current Mode PWM Controllers $12.99

UC3844A Current Mode PWMs DIP LOT OF 10 $19.95

10 PCS NCP1203P60 DIP-8 1203P60 Current-Mode Controller $19.79

100PCS STMicro ST735CD -5V INVERTING, NEGATIVE OUTPUT CURRENT-MODE PWM REGULATOR $19.00

8pcs UC2843B UC2843 2843 High Performance Current Mode Controllers ON SOP-8 $18.80

10 PCS NCP1203P60 DIP-8 1203P60 Current-Mode Controller $18.79

New VAC Triple Current Common Mode Choke 40A 3 x 1.4mH T60405-S4200-X224 $15.00

ICE2AS01 Current Mode PWM Controller 8-Pin PDIP $4.71

50pc UC3842 3842 DIP8 HIGH PERFORMANCE CURRENT MODE PWM $17.99

20 PCS OB2269CPC SOP OB2269 Current Mode PWM Controller $17.89

EL2470CN – EL2470 70MHz/1mA Current Mode Feedback Amplifiers IC $13.32

M62281P – M62281 Current Mode PWM Control IC $12.99

Low-Power BiCMOS Current-Mode PWM IC UCC2804 / UCC2804D ( NEW ) $11.50

LTC1871IMS – LTC1871 Current Mode Boost, Flyback and SEPIC Controller IC $12.12

TEA2019 / CURRENT MODE SWITCHING POWER SUPPLY CONTROL $9.95

CHERRY CS51024DR16 Enhanced Current Mode PWM Control IC $9.90

5 pcs UC3843B (UC3843) CURRENT MODE PWM CONTROLLER IC $9.99

5pieces,TPS51120RHBR TPS51120 QFN32 DUAL CURRENT MODE IC Chip (Z11) $14.98

11 PCS TL3844P TL3844 DIP-8 Current-Mode PWM Controllers /FREE Registered Mail $14.59

UC2842AD1 – CURRENT MODE PWM CONTROLLER SMD $6.32

UCC3802N Low-Power BiCMOS Current-Mode PWM IC $9.40

5pcs TPS51120RHBR TPS51120 51120 QFN32 DUAL CURRENT MODE $14.38

MIC38C43-1BM BiCMOS Current-Mode PWM Controller IC $8.99

ICE2B765P2 SMPS Current Mode Controller IC $8.77

UCC3805D Low Power Current Mode PWM IC’s NEW 10 EACH $9.95

UCC3802N Low-Power BiCMOS Current-Mode PWM IC $8.20

ISL8843MUZ – ISL8843 Current Mode PWM Controller IC $8.00

10 PCS TL3844P DIP-8 TL3844 CURRENT-MODE PWM CONTROLLERS $12.99

NEW ON-SOP7-NCP1337DR2G IC CHIPSET Current−Mode $12.99

2pcs TPS51120RHBR TPS51120 QFN32 DUAL CURRENT MODE IC Chip new $12.99

12 PCS UC3843BN UC3843B DIP-8 CURRENT MODE CONTROLLERS $12.99

20 UC3842 3842 DIP8 HIGH PERFORMANCE CURRENT MODE PWM $9.99

NEW ON-SOP7-NCP1337DR2G IC CHIPSET Current−Mode $12.99

UC3847N – UC3847 Current Mode PWM Controller IC $7.95

EL2480CS – EL2480 250MHz/3mA Current Mode Feedback Amplifier IC $8.89

MAX731CPA [MAX731] Current-Mode DC-DC Converter IC $7.88

ICE3B3065P [ICE3B3065] SMPS Current Mode Controller IC $7.68

Constant Current LED Circuit Driver – 3 Modes – 5.2-12V, 5A, SST 50, SST 90, FL $12.55

UCC28C43D – UCC28C43 CURRENT MODE PWM CONTROLLER IC $8.50

EL2286CS – EL2286 Current Mode Feedback Amp IC $7.50

UC1843J UC1843 — Current Mode PWM Controller IC $7.50

2 PCS NCP1203P60 1203P60 DIP PWM Current-Mode Controlle $12.39

5 PCS TPS51120RHBR QFN32 TPS51120 51120 DUAL CURRENT MODE IC NEW $12.39

UC2846N [UC2846] Current Mode PWM Controller IC $7.30

MAX5070BASA [MAX5070] Current-Mode PWM Controller IC $7.22

11 PCS OB2263MP OB2263 SOT23-6 Current Mode PWM Controlle /FREE registered mail $11.99

ICE2B365 Off-Line SMPS Current Mode Controller IC $6.99

UCC3801N – UCC3801 BiCMOS Current-Mode PWM IC $6.98

CURRENT MODE PWM CONTROLLER UCC28C40 UCC28C40DGKR NEW $6.98

MC44602P2 HIGH PERFORMANCE CURRENT MODE CONTROLLER $7.95

MC34065 HIGH PERFORMANCE DUAL CHANNEL CURRENT MODE CONT $7.95

MC33129 HIGH PERFORMANCE CURRENT MODE CONTROLLERS $7.95

MC33065 HIGH PERFORMANCE DUAL CHANNEL CURRENT MODE CONT $7.95

LTC3803IS6 Current Mode Flyback DC/DC Controller IC $6.80

UCC3808N-1 CURRENT MODE PUSH-PULL PWM IC $6.71

UCC2810DW – UCC2810 CURRENT-MODE PWM IC $6.56

Current Mode PWM Controller, UC2846N $6.99

10 PCS OB2269CPC SOP OB2269 Current Mode PWM Controller $11.29

MAX1896 SOT23 Current-Mode Step-Up DC-DC Converter IC $6.20

2 pcs of HV9110NG – HV9110 High-Voltage Current-Mode PWM Controller IC $6.99

ICE3BR1065JF – ICE3BR1065 Current Mode Controller IC $6.98

UCC3806 Dual current-mode PWM controller $8.50

Constant Current LED Driver Board – 3 Modes, 5.5-12V 3.0A, XM-L, SSC P7, MCE $10.80

UCC3800N – UCC3800 BiCMOS Current-Mode PWM IC $5.77

UC3846J – UC3846 Current Mode PWM Controller IC $6.77

LT1241 Hi-Speed Current Mode Pulse Width Modulator LOT 5 $7.09

10 pcs UC3843B (UC3843) CURRENT MODE PWM CONTROL $8.00

MC34129 MC34129D High Performance Current Mode Controll $6.45

Current Mode Questions

Selecting the Programmer Operating Mode of Logicmaster PLC

Both the programmer and the configuration software operate in three modes: OFFLINE, MONITOR, and ONLINE. In OFFLINE mode, no data transfer takes place between the computer and the PLC. Programs and configuration data may conveniently be developed in OFFLINE mode, with or without the computer connected to a PLC. In MONITOR mode, if communications have been established between the computer and the PLC, the computer can read data from the PLC but may not transfer data to it. With communications established in ONLINE mode, programs and other data can be transferred between the PLC and the computer. If you are using a Workmaster or CIMSTAR I industrial computer, you may configure the Logicmaster 90-70 software to use the keyswitch to select the operating mode. For those computers without a keyswitch, or if the keyswitch is not enabled, mode selection can be made by:
• Pressing the ALT and M keys simultaneously; i.e., press the ALT key and hold it down, then press the M key. Repeatedly pressing ALT-M switches the operating mode from OFFLINE to MONITOR to ONLINE and then back to OFFLINE. _ Going to the Programmer Setup screen (Shift-F7) and selecting an operating mode. For more information on using the Programmer Setup screen to select the operating mode.

System Security
Security for configuration and program functions consists of:
• A range of four privilege levels for the PLC, which may be protected using passwords.
• A software lock that can be applied to individual program folders.
• A selectable operating mode.
• A software lock that can be applied to individual program blocks.
• An OEM key.

Password PLC are a configurable feature of the Series 90-70 PLC. Their purpose is to provide different levels of access privilege for the PLC when the programmer is in ONLINE mode. Passwords may not be set, or the password access (privilege) level may not be changed, when the programmer is in OFFLINE mode. The use of passwords is optional and may be set up using the status functions in the configurator. Passwords may be used to restrict changing I/O and PLC configuration data, changing programs, and clearing faults.

Program folders can be protected to prevent accidental changes to program and configuration information. Each program folder can be either “locked” or “unlocked”. After a folder is locked, its contents cannot be changed or deleted. For more information on locking program folders.

Setting up PLC Communications using a WSI Board
For the WSI version of Logicmaster 90-70 software, the serial port on the Work Station Interface (WSI) Board in the programmer provides serial communication between the programmer and the attached PLC. The COMSET serial port setup function is used to configure the WSI serial port, and to save or recall those configurations from disk files. “WSI Serial Port,” for instructions on WSI serial port setup. The parallel port on the WSI Board requires no port setup; however, you must select PARALLEL as the port connection.

Setting up PLC Serial Communications
For the standard serial communications version of Logicmaster 90-70 software, the COM1 or COM2 serial port may be set up to provide serial communications between the programmer and the attached PLC. The COMSET serial port setup is used to configure the COM1 or COM2 serial port, and to save or recall those configurations from disk files.

Program Folders
Each program and the corresponding configuration is assigned to a subdirectory called a program folder. Both the configuration software and the programming software use a set of program utility functions to create and maintain program folders. “Program Folders,” explains how to use the program folder functions to:
• Select another program folder.
• Create a new program folder.
• Delete an unneeded program folder.
• Rename a program folder.
• Make a backup copy of the current program folder.
• Restore a program folder with its backup copy.
• Clear the contents (entire or selective) of the current program folder.
• Lock/unlock a program folder.
• Copy the contents (entire or selective) of one program folder into the current program folder.

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