Instruction/ maintenance manual of the product RS-485 B&B Electronics
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485SDA103798 Manual Cover Page B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 RS-485 Data Acquisition Module Model 485SDA10 Document No. 485SDA103798 This product Designed and Manufactured In Ottawa, Illinois USA of domestic and imported parts by B&B Electronics Mfg.
485SDA103798 Manual Table of Contents i B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Table of Contents Chapter 1- Introduction ........................................... 1 485SDA10 Features .
ii Table of Contents 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Set Turn-around Delay Command ............................... 17 Read Module Configuration Command .
485SDA103798 Manual Table of Contents iii B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 TABLE 5.1 - DIGITAL I/O MASK VALUES .................................... 24 TABLE A-1 EXTENDED COMMANDS .
485SDA103798 Manual 1 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Chapter 1- Introduction 485SDA10 Features The 485SDA10 is a general purpose control module which operates through an RS-485 interface.
2 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Figure 1.2 - General Block Diagram Packing List Examine the shipping carton and contents for physical damage. The following items should be in the shipping carton: • 485SDA10 unit • One 485SDA10 3.
485SDA103798 Manual 3 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Windows 3.11 1. Insert SDA Logger installation disk in your floppy drive. 2. Click the File Manager button. 3. Select the floppy drive containing the SDA Logger installation disk.
4 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 variable resistor must be greater than 1k Ohms to limit the output current to 5mA. • Connect A/D Ref Input+ to +5V DC.
485SDA103798 Manual 5 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 485SDA10 Specifications Analog to Digital Converter Resolution: 10 bit Channels: 11 Reference Range: 5.0V DC max. (4.
6 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Chapter 2 - Connections This chapter will cover the connections required for the 485SDA10.
485SDA103798 Manual 7 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 A/D Ref Input - T he voltage connected to this pin determines the low end of the input voltage range. For proper operation, this pin must be connected to a DC voltage between 0 and +2.
8 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Digital I/O Connections The digital I/O connectio ns are made on the I/O port, which is a DB-25S (female) connector.
485SDA103798 Manual 9 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Digital Ground Connect the digital ground pin to your digital device's ground. To minimize noise, do not connect analog ground and digital ground together.
10 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Serial Port Connections To communicate with the 485SDA10 module, it must be connected to an RS-422/RS-485 serial port.
485SDA103798 Manual 11 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Power Supply Connections The 485SDA10 requires 7 to 18 V DC at 30mA. Remember that the 30mA requirement doesn’t include the power consumption of any external devices.
12 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Chapter 3 - Commands There are only three commands required to.
485SDA103798 Manual 13 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 The decimal and hexadecimal equivalents of some ASCII characters are shown in Table 3.2. Notice that the ASCII representation of the character “0” does not have a value of 0.
14 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 The Read A/D channels command returns two bytes for each channel read. The two bytes represent the most significant byte (MSB) and least significant byte (LSB) of the reading.
485SDA103798 Manual 15 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Reading Digital I/O Command The Read Digital I/O command returns a byte which represents the states of the 3 digital input and 3 digital output states.
16 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Set Digital Output Command The Set Digital Output command is used to set the states of the 3 digital output lines.
485SDA103798 Manual 17 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Set Power-up States Command The Set Power-up States command is used to set the st ates of the digital outputs at power-up.
18 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 { address}{ states}{ delay} Where {address} is a byte represen.
485SDA103798 Manual 19 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Chapter 4 - A/D This chapter will deal with manipulating an A/D reading and cover some of the aspects that were not explained in the A/D Connections chapter.
20 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Data Range The data range of the A/D converter is determined by A/D Ref Input+ and A/D Ref Input- . A/D Ref Input- sets the bottom of the data range.
485SDA103798 Manual 21 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 The step size is also referred to as the resolution. Once the step size is known, all that is needed to determine the voltage of an A/D input is the number of steps.
22 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Chapter 5 - Software This chapter covers programming techniques such as constructing a command string, receiving data and manipulating data.
485SDA103798 Manual 23 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 ‘Get the value of channel 1 MSB$ = INPUT$ (1, #1) LSB$ = INPU.
24 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Table 5.1 - Digital I/O Mask Values Example 5.2 - Determining the status of Digital Input #1 of the module with and address of 10.
485SDA103798 Manual 25 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 b) Set Appropriate Outputs LO W states = states AND (NOT(mask)) By “ ANDing” the current states with the complement of the appropriate mask of a digital output (given in Table 5.
26 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Example 5.4 – Change the address of a model from 5 to 10.
485SDA103798 Manual 27 B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 ‘ Clear bit 2 of states to make digital output 2 LO W states .
28 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Read Module Configuration The Read Module Configuration command reads the 485SDA10’s address first, then the power-up states, and finally the turn-around delay.
485SDA103798 Manual Appendix A A- 1 B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Appendix A: Adding Data Field Confirmation W ith serial communications in a laboratory environment, the possibility of a communication error occurring is minimal.
A- 2 Appendix A 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Where “x” is the required data byte and “~” signifies the complement of the specified byte.
485SDA103798 Manual Appendix B B- 1 B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Appendix B: Analog Input Impedance When interfacing with an A/D converter, it is important that the device you are connecting can drive the A/D input.
B- 2 Appendix B 485SDA103798 Manual B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Simplified Analog Input Analysis Using the equiva.
485SDA103798 Manual Appendix B B- 3 B&B Electronics - - 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Figure B-1.
485SDA103798 Manual Appendix C C- 1 B&B Electronics - - PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 - - FAX (815) 434-7094 Appendix C: Decimal to HEX to ASCII Table Table C-1: Decimal to HEX.
FCC Class A Equipm ent Stat ement FEDERA L COMM UNI CA TIONS COMM ISSION RA DIO FREQ UENCY I NTERFA CE STA T EMENT Class A Equipmen t This equipm ent has been tested and f ound to com ply with the limits for Clas s A digital device, pursuant to Par t 15 of the FCC Rules.
An important point after buying a device B&B Electronics RS-485 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought B&B Electronics RS-485 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data B&B Electronics RS-485 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, B&B Electronics RS-485 you will learn all the available features of the product, as well as information on its operation. The information that you get B&B Electronics RS-485 will certainly help you make a decision on the purchase.
If you already are a holder of B&B Electronics RS-485, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime B&B Electronics RS-485.
However, one of the most important roles played by the user manual is to help in solving problems with B&B Electronics RS-485. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device B&B Electronics RS-485 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
