cubloc:connecting_a_backup_battery_to_cb290_cb405:index
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cubloc:connecting_a_backup_battery_to_cb290_cb405:index [2023/04/17 13:33] COMFILE Technology |
cubloc:connecting_a_backup_battery_to_cb290_cb405:index [2023/04/18 11:46] (current) COMFILE Technology |
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| - | ====== Backup Battery for the CB290 / CB405 / CT1721 ====== | + | ====== Backup Battery ====== |
| ===== CB290 / CB405 ===== | ===== CB290 / CB405 ===== | ||
| Line 13: | Line 13: | ||
| the case of an emergency. | the case of an emergency. | ||
| - | {{ :cubloc:connecting_a_backup_battery_to_cb290_cb405:backupbattery.png?500 }} | + | {{ :cubloc:connecting_a_backup_battery_to_cb290_cb405:backupbattery.png? }} |
| ==== Power Features ==== | ==== Power Features ==== | ||
| Line 32: | Line 32: | ||
| SIN, SOUT, and ATN, please do not connect them to anything. | SIN, SOUT, and ATN, please do not connect them to anything. | ||
| - | ===== CT1721 ===== | + | ===== CT1721C ===== |
| - | The CT1721 will maintain data in its volatile memory when powered off by using a backup battery. If backup is not needed, the program should clear the memory at the beginning of the program. Use [[cubloc:ramclear:index|RamClear]] to clear all data memory at the start of your program. | + | The CT1721C will maintain data in its volatile memory when powered off by using a backup battery. If backup is not needed, the program should clear the memory at the beginning of the program. |
| - | The CT1721 comes with a self-charging 1.0F super-capacitor that can last about a day (up to 30hrs). You can replace it with a 10.0F super-capacitor to extend the duration to about 300 hours (12.5 days). Adding a battery can provide additional backup time depending on capacity. To add a backup battery, please connect to the ports labeled "External Battery" under the super-capacitor (not visible when the back cover is in place). | + | <code xbasic> |
| + | Const Device = CT1720 | ||
| + | Dim TX1 As Integer, TY1 As Integer | ||
| + | TY1 = 0 ' Clear only TY1 | ||
| + | </code> | ||
| + | |||
| + | Use [[cubloc:ramclear:index|RamClear]] to clear all data memory at the start of your program. | ||
| <code xbasic> | <code xbasic> | ||
| Const Device = CT1720 | Const Device = CT1720 | ||
| Dim TX1 As Integer, TY1 As Integer | Dim TX1 As Integer, TY1 As Integer | ||
| - | TX1 = 0 | + | RamClear ' Clear all RAM, both TX1 and TY2 |
| - | TY1 = 0 ' Clear just this variable | + | |
| - | RamClear ' Clear all RAM | + | |
| </code> | </code> | ||
| + | |||
| + | To add a backup battery to the CT1721C, connect a 3V battery to the "Batt. Backup" terminal on the back, bottom right side of the CT1721C and leave the "JUMPER_SUPERCAP" open. To use a super capacitor instead of battery, connect the super capacitor to "Batt. Backup" and short the "JUMPER_SUPERCAP" terminal to enable charging while the power is on. | ||
| + | |||
| + | {{ :cubloc:connecting_a_backup_battery_to_cb290_cb405:cutouch_battery.png }} | ||
| In Ladder Logic, all registers S, M, C, T, and D are retained by the backup battery. Register P is cleared by default when the device is powered on. If you only want to clear parts of a register, rather than all registers, use the following method: | In Ladder Logic, all registers S, M, C, T, and D are retained by the backup battery. Register P is cleared by default when the device is powered on. If you only want to clear parts of a register, rather than all registers, use the following method: | ||
| Line 51: | Line 59: | ||
| Const Device = CT1720 | Const Device = CT1720 | ||
| Dim i As Integer | Dim i As Integer | ||
| - | For i=0 to 32 ' Clear only Register M0 to M32 | + | For i=0 to 32 ' Clear only M0 to M32 |
| _M(i) = 0 | _M(i) = 0 | ||
| Next | Next | ||
| Set Ladder On | Set Ladder On | ||
| </code> | </code> | ||
| + | |||
| + | [[cubloc:index|CUBLOC - Embedded Controller]] | ||
cubloc/connecting_a_backup_battery_to_cb290_cb405/index.1681705993.txt.gz · Last modified: 2023/04/17 13:33 by COMFILE Technology