Manual 601: : USB/RS232. Specifications. Contents. Options

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1 Page 1 ATE : : USB/RS232 I/O Controller - 8 Inputs, 4/8 Relays The ATE-500/600 series is a range of modular I/O controllers. It uses small standardized boards which allows you to configure the system to your requirements. The ATE-601 is an I/O controller with 4 or 8 relays and 8 protected inputs. It can be controlled with ASCII commands via USB or RS232. Specifications 4 Relays 5A/250Vac with 1 common and 4 NO contacts Expandable to 8 relays with ATE-201 Relay Board* 8 Inputs with 10K pull-up resistors Inputs are protected to 30Vdc max. Inputs can measure analog and digital signals Connections via screw terminals Arduino software compatible Control with ASCII commands USB virtual COM with FTDI adapter or cable RS232 with ATE-205 or ATE-405 Board* Powered via 5Vdc power supply Powered via 12Vdc/24Vdc with ATE-405 Board* Dimensions 10 x 8 x 6 cm (approx.) Open source hardware and software Made in Holland Contents The ATE-601 includes: ATE-101 Carrier Board with Arduino Pro Mini and ATE-601 Sketch firmware ATE-201 Relay Board with 4 relays ATE-202 Input Board with 8 inputs ATE-301 Back Panel Board* *ATE-301 Back Panel Board allows no expansion to 8 relays when ATE-205/405 is used. Options The ATE-601 has the following options: ATE-201 Relay Board with 4 relays ACDC5012 Power Supply 5V ATE-205 RS232 Board ATE-405 Power Supply Board with RS232

2 Page 2 USB Basic FTDI Adapter 5V (SFE09716) USB FTDI Cable 5V (SFE09718) Enclosure Hammond 1598E Enclosure Elbag MR6/HMX Assembly This section describes how to assemble the ATE-601 I/O Controller. The ATE-101 Carrier Board with Arduino Pro Mini may or may not have additional connectors, depending on availability.

3 Page 3 On the ATE-301 Back Panel Board, the ATE-101 Arduino board need to be placed on the 50 pins connector indicated with uc. Be aware all 50 pins are correctly connected and the board is correctly oriented (components on the outside). The ATE-202 Input Board should be placed on connector CON2 close to the uc board, with solder side facing each other. The ATE-201 Relay Board should be placed on the next 50-pin connector (CON3).

4 Page 4 On the last 50-pin connector (CON4) an ATE-201 Relay Board or an ATE-205/405 Power Board with RS232 can be placed. For connecting the wires to the boards it is recommended to take the board out of the Back Panel Board.

5 Page 5 Connections The ATE-202 Input Board has 8 inputs and one common connected to ground. The Board can be used to measure analog and digital signals. Analog 0V until +5Vdc. In the firmware digital logical level 0 is set at +0,5Vdc or less and logical level 1 at +2Vdc or more. The inputs have a 10K pull-up resistor to +5Vdc. A switch contact can be connected directly between input and GND (dry contact input). Also an open collector output can be connected directly to the input. For USB connection the FTDI Basic USB Board can be used or the FTDI USB Cable. The USB Board can be placed on the ATE-202 Board. FTDI Basic USB Board 5V Power Gnd Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 Input 8 When an FTDI Cable is used make sure the green wire is connected to the pin indicated GRN and the black wire to the pin indicated BLK.

6 Page 6 FTDI USB Cable 5V Power Gnd Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 Input 8 Power is not connected. Power can be used as an alternative input to supply power to the ATE-601 controller. In this case jumpers on all boards must be changed. See the schematics for information on jumper settings. The analog inputs use the power supply of the microcontroller as reference. If you need a more stable reference, you can use this Power input to supply only the microcontroller. The ATE-201 Relay Board has 2 common connections and 4 NO (Normally Open) connections. The common connections are connected to each other and to the 4 relay contacts. The 5V power supply can be connected to one of the Relay Boards. The 5V power input should not be used when an ATE-405 Power Supply Board is installed. In this case it is recommended to remove jumper 1-2 EXT.

7 Page 7 OUT 1 OUT 2 OUT 3 OUT 4 COMMON COMMON 5V POWER INPUT The relays on the first module (Back Panel CON3) will be relay 1-4. The relays on the outside module (Back Panel CON4) will be relay 5-8. The ATE-205/405 Board has an RS232 interface and an USB interface via an FTDI adapter or cable. The ATE-405 has a high efficiency voltage regulator and the ATE-205 not.

8 Page 8 FTDI USB Adapter or Cable RS232 +Vdc input GND input If an FTDI USB Cable is used, it should be connected as follows. Of the FTDI USB cable the green wire should be above and the black wire below.

9 Page 9 RS232 and USB cannot be used at the same time. With jumpers you select which one you want to use. For RS232: 1-3 and 2-4 For USB: 3-5 and 4-6 (default) If you want to use the FTDI connector on one of the other boards, you must disable RS232 by removing jumpers 1-3 and 2-4. Only one FTDI connector can be used at the same time. Power Supply A stabilized 5Vdc power supply (like ACDC5012) is recommended for the ATE-601. With one relay board maximum current is 300mA and with 2 relay boards 600mA. The ATE-601 with one relay board may be powered with USB. In this case jumpers on all boards must be changed. See the schematics for information on jumper settings. With 2 relay boards a 5Vdc power supply is required. A 12Vdc or 24Vdc power supply can be used with the ATE-405 Power Supply Board. The ATE-405 Board has a high efficiency voltage regulator and accepts DC power between 7V and 35V. All boards have a power on led. Jumper settings At delivery the jumpers on every board are set for ATE-601 use. The jumpers settings should be as on the photos above: ATE-101: 4-35V ATE-201: 1-2 EXT, 3-4 INT ATE-202: 5-65V ATE-205/405: 3-5, 4-6 USB

10 Page 10 ATE-601 Tester The ATE-601 Tester is a Windows program which can be used to test the controller. This software and source code can be downloaded from When an FTDI USB Board or cable is connected for the first time, Windows will install the driver and will give it a port number. After opening the Tester, type in this port number and click on Open. If you do not know the port number, you can click on List Ports and you will see the available port(s). The Tester will read the inputs continuously and show the results. When you click on Toggle, you can switch the relay on and off. For the relays and inputs, green indicates contact is closed and red indicates contact is open. To change the baud rate of the tester, click on Baud. To change the baud rate of the controller, use the SB command as described below. Communicating with the Controller The Address and Baud Rate of the unit can be set and are stored in the controller s memory. By default the controller is listening for serial data at 9600 baud, and has address 00. The controller will always use 1 Stop Bit, 8 Data Bits and No Parity. The commands the controller uses are in the CC X<CR> symbol is used to define the start of a command. AA is the address of the unit from 00 to 99. CC is a two letter command used to determine the command type.

11 Page 11 X is a one or more characters which determines the parameter for the command. <CR> is the carriage return character. This is ASCII character 13, or 0x0d. Each time a valid command is received the unit will respond with #AA followed by any values that are requested from the unit. ON: Relay On Command This command is used to turn a single relay on. ON 1 will turn relay 1 on for the unit with address 44. It can also be used to turn all the relays on, this occurs when the parameter value is 0. OF: Relay Off Command Similar to the on command this command will turn relays off in the same manner. OF 1 will turn relay 1 off for the unit with address OF 0 will turn all relays off. WR: Write Relays Command The write relays command is used when more than one relay is to be turned on or off at once. The parameter is a decimal number which, in binary, represents the on and off status of the 8 relays. The least significant bit of this value controls relay 1. The most significant bit of the parameter value controls relay 8. A set bit (1) turns the relay on, a cleared bit (0) turns the relay off. Example: To turn relays 1, 2 and 6 on (and others off) the binary value required is In decimal this is 35. (2^(1-1) + 2^(2-1) + 2^(6-1) = 35). To issue this to a controller with address 44, the required command WR 35 IS: Input Status Command This command will return the status of the inputs. If the parameter is between 1 and 8 then the controller will return a 0 or 1 corresponding to that input. IS 1 will return #441 if the input is closed (0V), or #440 if the input is open (+5V). If the parameter is 0 then the unit will respond with the status of all the inputs, in similar form as the Write Relays command. E.g.: If inputs 1 and 2 for the unit are on IS 0 will return # is 0011 in binary, and each bit represents each input from 4 down to 1. RS: Relay Status Command Much the same as the input status command, this command will return the status of the relays. If the parameter is between 1 and 8 then the unit will return with a 0 or 1

12 Page 12 corresponding to that relay. RS 1 will return #441 if the relay is on, or #440 if the relay is off. If the parameter to this command is 0 then the unit will respond the same way as the input status command, but return the status of the relays. AI: Analog Input Command The analog input command will read the status of the analog input defined by the parameter and return it as a value between 0 and AI 1 will return # if the analog input is reading 50%. If the parameter is 0 then the unit will respond with the value of all analog inputs. SA: Set Address Addresses are valid from A unit will only respond if its address in memory is the same as that of the command sent, or if the address of the command sent is 00. The address is saved to non-volatile memory inside the controller, meaning it will be preserved even after power is disconnect from the controller. SB: Set Baud Parameters from 1 to 10 are valid, corresponding to the following values. 1: 1200 baud 6: baud 2: 2400 baud 7: baud 3: 4800 baud 8: baud 4: 9600 baud (default) 9: baud 5: baud 10: baud The baud rate is saved to non-volatile memory inside the controller, meaning it will be preserved even after power is disconnect from the controller. Serial Terminal Program You can use a serial terminal program to communicate with the controller. One of the popular Windows terminal programs is Tera Term. It can be downloaded from When you have connected the USB adapter and you start Tera Term, you will get the following screen.

13 Page 13 If you select Serial you can select the port you are using. After OK you get an empty screen. Default speed is 9600baud. When you push the reset button on the Arduino microcontroller, then after a few seconds the version of the firmware will appear.

14 Page 14 To be able to see the commands you are typing, you need to change the terminal setup. Click on Setup and Terminal Set New-Line Transmit to CR+LF and switch Local echo on.

15 Page 15 Click on OK. If you now type a command, you will see it on the screen. To switch relay 1 on, you can After Enter the controller will switch the relay on and respond with #00. To read the status of the relays, you can

16 Page 16 Loading new firmware The ATE-601 uses the Arduino Pro Mini (5V) which is an Atmel ATmega328 microcontroller with Arduino bootloader. The Arduino is loaded with ATE-601 Sketch. The source code can be downloaded from You are free to modify the code. You can load the modified code or any other code via USB into the Arduino Pro Mini with the Arduino development environment, available at Before loading it is recommended to place the Auto Reset jumper on the ATE-101 Carrier Board. The RS232 interface of the ATE-205 supports DTR, which means you can also use an USB-RS232 cable to load code into the Arduino. Power on and reset After power on there will be a short closure of relay 8. Power on reset and manual reset (button on Arduino Pro Mini) will start the Arduino bootloader to check if the Arduino development environment is active. During this short time the led on Arduino Pro Mini will lit. On the same output as the led, relay 8 is connected.

17 Page 17 Enclosures ATE-601 in Hammond 1598E ATE-601 in Elbag MR6/HMX for wall-mount or DIN-rail