Siemens 6ES7421-1BL01-0AA0 SIMATIC S7-400 SM 421 Digital Input Module, (32) 24V DC Digital Inputs, Sinking, Optically Isolated
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6ES7421-1BL01-0AA0Payment:
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ChinaLead Time:
1-3 DaysCondition:
Brand New And OriginalWarranty:
1 YearCertificate:
COODescription:
Digital InputSiemens 6ES7421-1BL01-0AA0 SIMATIC S7-400 SM421 Digital Input
What is BCD?
While it is necessary for PLCs to use binary values, humans often need to see values represented in decimal. As a result, some input and output devices provide a decimal display where each decimal digit corresponds to four PLC binary inputs or outputs. The most common system used by input and output devices of this type is referred to as binary-coded decimal (BCD).
One example of a BCD device is a type of four-digit thumbwheel switch. Each thumbwheel digit controls four PL C inputs. This means that for a fourdigit thumbwheel, 16 inputs are required. Because each thumbwheel digit only needs to represent decimal values from 0 through 9, only ten corresponding binary values are required for each digit.
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Our Supply Range
1. Allen-Bradley 1756/1769/1771/1785 Series (1769-L30ERMS,1769-L30ER-NSE,1769-L33ERMS,1756-L61,1756-L62,1756-L73）
2. ABB 800xA/Bailey INFI90/DSQC/ Series (07KT98 WT98,07KT97 WT97,DSQC679,IMASI23,IMDSO14...)
3. Bently Nevada 3500/3300 Series (3500/42M ,3500/22M,3500/95.3500/15)
4. Schneider Modicon Series (140CPU65150,140CPU67060,140CRA ,140CPS)
5. GE IC693/IC697/IC698/IS200/DS200 Series (IC693CPU363,IC697PWR711,369-HI-0-0-0-0,DS200ADGIH1AA)
6. SIEMENS MOORE/S5 Series (6ES7 cards,6ES5,6DD,6DP)
7. Westinghouse/OVATION (1C31194G01,1C31197G01,5X00106G01,1C31125G02...)
8. ROSEMOUNT: (3008,3664,3805E.3704E,3700A 4351B...)
9. FOXBORO (FCP270,FBM203,FBM204,FBM217,FMB231...)
More Types Modules We Are Applying For You
| Allen Bradley | Bently Nevada | ABB | ICS Triplex |
| 1747-L541 | 3500/50 133442-01 | DTPC721B 3EST126-236 | T8123 |
| 1746-A13 | 125720-01 | 07DC92 GJR5251600R0202 | T8431 |
| 1747-M13 | 330180-91-00 | PP846A 3BSE042238R2 | T8193 |
| 1746-IB8 | 3500/42 128240-01 | DSTA160 | T9802 |
| 1756-IA16I | 3300/65 | C100/0200/STD | T9852 |
| 1784-PCMK | 125720-02 | DSQC352A | T8311 |
| 1756-L55M12 | 3500/15 127610-01 | 3BSE019050R200 PFTL-301E-0.2KN | T8110C |
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