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EAKV24-9B Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers |
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EAKV24-9B Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers |
3 / 17 page 3 EA KIT320-8 RS-422 Connector J3 Pin Symbol Function 1 VDD + 5V Supply 2 Data In- Receive Data 3 Data In+ Receive Data 4 Data Out- Transmit Data 5 Data Out+ Transmit Data 6 HS In- Handshake 7 HS In+ Handshake 8 HS Out- Handshake 9 HS Out+ Handshake 10 GND 0V Ground RS-232 Connector J3 Pin Symbo In/Out Function 1 VDD - + 5V Supply 2 DCD - Connected to DTR 3 DSR - Connected to DTR 4 TxD Out Transmit Data 5 CTS In Clear To Send 6 RxD In Receive Data 7 RTS Out Request To Send 8 DTR - see Pin 2, Pin 3 9 - - NC 10 GND - 0V Ground Baudrates DIP Switch data format 8,N,1 1 2 3 ON ON 2,400 OFF ON ON 4,800 OFF ON 9,600 OFF OFF ON ON 19,200 OFF ON 38,400 OFF OFF ON 57,600 OFF OFF 115,200 OFF OFF OFF Extension J5 Pin Symbol In/Out Function 1 VU - 9..35V Supply 2 VDD - + 5V Supply 3 GND - 0V, Ground 4 TxD5 Out Transmit Data 5 RxD5 In Receive Data 6 RTS5 Out Request To Send 7 CTS5 In Clear To Send 8 RESET In L: Reset 9 SCL Out I2C Bus, Clock 10 SDA In/Out I2C Bus, Data View from rear side SUPPLY VOLTAGE In the standard model, the supply voltage of +5V is fed in via the screw-type terminal J1. In the case of the version for 9V to 35V (EA OPT-9/35V), the power is supplied via J2. Important: It is imperative that the polarity is correct. Even very brief polarity reversal can damage the entire operating unit immediately and irreparably. BAUD RATES The baud rate can be set by means of the three DIP switches on the left. When the equipment is delivered, the setting is 9,600 baud (DIP 3 ON). Please note that the internal data buffer is only 128 bytes. The RTS handshake line must therefore be queried (+10V level: data can be accepted; -10V level: display is busy). The data format is set permanently to 8 data bits, 1 stop bit, no parity. RS-232/RS-422 The operating unit is shipped with an RS- 232 interface as standard. The pin assignment of connector J3 is then as shown in the table on the left. J3 has a grid of 2.54mm. If the operating unit is ordered together with the EA OPT-RS4224 option, special RS-422 drivers are fitted. The pin assignment in the table on the right then applies. Incidentally, the same serial data with 5V levels and TTL logic is available at the J5 eyelet strip. These levels are suitable for direct connection to a µC. If these signals are used, 4 solder straps LB1, LB2, LB 5 und LB 6 has to be opened ! |
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