Description
This application note explains the process for changing the MM200 analog output settings from a Windows PC. The serial communications program Tera Term must be installed prior to following these instructions, and a serial to USB converter must be purchased. If you don’t have Tera Term installed, click here to install the latest version from GitHub.
Instructions
1. Plug the serial to USB converter into your PC.
2. Open the Start Menu.
3. Open the Control Panel.
4. Open Hardware and Sound.
5. Open the Device Manager.
6. Expand the Ports (COM & LPT) drop down.
7. Determine the COM port assignment for your USB to serial converter, in this example the converter is assigned to COM3.
8. Open TeraTerm.
9. Open the Setup menu and select the Serial port… option.
10. Change the Port setting to the COM port for your USB to serial converter, in this example it is COM3.
11. Ensure that the remainder of the settings are the following, then select OK:
- Baud rate: 9600
- Data: 8 bit
- Parity: none
- Stop: 1 bit
- Flow control: none
- Transmit delay: 0 msec/char, 0 msec/line
12. Open the Setup menu and select the Terminal setup… option
13. Ensure that the settings are the following, then select OK:
- Receive: CR+LF
- Transmit: CR+LF
- Local echo checked
14. Send the following commands to change the analog output setting, this example changes the 7B output to Linear (<CR> is equivalent to pressing the Enter key). A full list of commands and analog output options can be found in the table below.
- R7BN<CR>
- SE<CR>
| Sensor | Command | Name | Range (Torr) | V/Division | Description |
| 1E/F | R1EN | Linear | 1/100 to 1000/10,000 | 0 to 10 V | 10 V = 1000/10,000 Torr |
| 1E/F | R1EM | Linear/Decade | 1/100 to 1000/10,000 | 2.00 V/Decade | 10 V = 1000/10,000 Torr |
| 1E/F | R1EL | Logarithmic | 1/100 to 1000/10,000 | 3.33 V/Decade | 10 V = 1000/10,000 Torr |
| 2A | R2AN | Linear | 10-3 to 1 | 0 to 10 V | 10 V = 1 Torr |
| 2A | R2AL | Logarithmic | 10-3 to 1 | 3.33 V/Decade | 10 V = 1 Torr |
| 2A | R2AT | Traditional | 10-3 to 20 | 0 to 10 V | 10 V = 10-3 Torr |
| 2A | R2AR | Linear Revised | 10-3 to 1 | 0 to 10 V | 10 V = 10-3 Torr |
| 3F | R3FM | Linear/Decade | 10-11 to 10-2 | 1.00 V/Decade | 10 V = 10-2 Torr |
| 3F | R3FL | Logarithmic | 10-11 to 10-2 | 1.00 V/Decade | 10 V = 10-2 Torr |
| 3F | R3Fx | Linear | 10-2 to 10-x | 0 to 10 V | 10 V = 10-8<-x<-2 Torr |
| 4A | R4AN | Linear/Decade | 10-3 to 1000 | 1.00 V/Decade | 10 V = 1000 Torr |
| 4A | R4AU | Linear | 10-3 to 1 | 0 to 10 V | 10 V = 1 Torr |
| 4A | R4AT | Linear | 10-3 to 10 | 0 to 10 V | 10 V = 10 Torr |
| 4A | R4AL | Logarithmic | 10-3 to 1000 | 1.67 V/Decade | 10 V = 1000 Torr |
| 5A/B/C/D/E/F | R5AN | Linear | Full Scale | 0 to 10 V | 10 V = Full Scale |
| 5A/B/C/D/E/F | R5AL | Logarithmic | 3 Decades | 3.33 V/Decade | 10 V = Full Scale |
| 7B | R7BM | Linear/Decade | 10-7 to 10-3 | 2.00 V/Decade | 10 V = 10-3 Torr |
| 7B | R7BL | Logarithmic | 10-6 to 10-3 | 3.33 V/Decade | 10 V = 10-3 Torr |
| 7B | R7BE | Extended Logarithmic | 10-7 to 10-3 | 2.50 V/Decade | 10 V = 10-3 Torr |
| 7B | R7BN | Linear | 10-6 to 10-3 | 0 to 10 V | 10 V = 10-3 Torr |
| 7B | R7BT | Traditional | 10-7 to 10-3 | 0 to 10 V | 10 V = 10-3 Torr |
| 7E | R7EM | Linear/Decade | 10-8 to 10-2 | 1.00 V/Decade | 10 V = 10-2 Torr (4 to 10 V) |
| 7E | R7EL | Logarithmic | 10-8 to 10-2 | 1.67 V/Decade | 10 V = 10-2 Torr |
| 7E | R7Fx | Linear | 10-2 to 10-x | 0 to 10 V | 10 V = 10-7<-x<-2 Torr |
| 7F/FC/FCS | R7FM | Linear/Decade | 10-11 to 10-2 | 1.00 V/Decade | 9 V = 10-2 Torr |
| 7F/FC/FCS | R7FL | Logarithmic | 10-11 to 10-2 | 1.00 V/Decade | 9 V = 10-2 Torr |
| 7F/FC/FCS | R7Fx | Linear | 10-2 to 10-x | 0 to 10 V | 10 V = 10-8<-x<-2 Torr |
15. This process can be repeated as many times as necessary for different sensors until all of the desired analog outputs are changed.
Related Products
• Customer configurable design
• RS-232/RS-485 digital communications
• Supports up to 8 relay set points
• Selectable units of measurement