Open Access v4 Jumpers - Revision history

Arclight: /* Hardware Settings and Defaults */

2014-05-11T22:41:00Z

Hardware Settings and Defaults

← Older revision		Revision as of 15:41, 11 May 2014
Line 4:		Line 4:
	[[File:AC400_1024x1024_jumpers.png]]		[[File:AC400_1024x1024_jumpers.png]]

	The Open Access comes ready to run out of the box~~. Just plug the board into an 11-15VDC power source (300ma or greater, 2A if using Raspberry Pi), connect a USB cable~~, ~~and you are ready to customize and program it. Advanced~~ users may want to customize ~~the~~ hardware The following is a list of hardware features that can be selected via jumpers.		The Open Access comes ready to run out of the box, advanced users may want to customize their hardware. The following is a list of hardware features that can be selected via jumpers.
	<BR>		<BR>

Arclight: /* Jumper Settings */

2014-05-11T22:01:30Z

Jumper Settings

Arclight: *

2014-05-11T21:58:33Z

New page

==Jumper Settings==

[[File:AC400_1024x1024_jumpers.png]]

The Open Access comes ready to run out of the box. Just plug the board into an 11-15VDC power source (300ma or greater, 2A if using Raspberry Pi), connect a USB cable, and you are ready to customize and program it. Advanced users may want to customize the hardware The following is a list of hardware features that can be selected via jumpers.

*1 USB Power - Enable this jumper to allow the board to be powerd via USB or power an attached accessory.
**Default: ON
**Recommend turning this off if you need to ensure that your external device does not remain powered by the OA's 5V USB connection.
*2 USB/RPi Selector - Determines whether the Open Access communicates via the mini-USB port or the Raspberry Pi connector
**Default: Both jumpers UP (USB)
**Set both jumpers in the pair to "USB" (top) setting to connect the serial output to the FTDI-based USB port.
**Important: Move both jumpers for proper operation. One jumper is for TX and one is for RX to the Atmgea328P.
*3 RS-485 Termination - Enables a termination resistor for end-of-bus on an RS-485 circuit
** Default: ON
** Recommendation: Leave this to ON if connecting 0-1 devices, or if it is the last unit in the circuit.
*4 Reset Enable - Can be used to disable the resetting and re-flashing of the Open Access CPU
** Default: ON (Reset enabled)
** Recommendation: Set this to OFF for increased security; setting it to OFF will prevent a reset and bootloader access. Set to OFF if a USB-attached peripheral may hard-reset and interfere with operation of the unit. Set to ON to allow programming/reset from USB.

← Older revision		Revision as of 15:01, 11 May 2014
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	==~~Jumper~~ Settings==		==Hardware Settings and Defaults==


	[[File:AC400_1024x1024_jumpers.png]]		[[File:AC400_1024x1024_jumpers.png]]

	The Open Access comes ready to run out of the box. Just plug the board into an 11-15VDC power source (300ma or greater, 2A if using Raspberry Pi), connect a USB cable, and you are ready to customize and program it. Advanced users may want to customize the hardware The following is a list of hardware features that can be selected via jumpers.		The Open Access comes ready to run out of the box. Just plug the board into an 11-15VDC power source (300ma or greater, 2A if using Raspberry Pi), connect a USB cable, and you are ready to customize and program it. Advanced users may want to customize the hardware The following is a list of hardware features that can be selected via jumpers.
			<BR>

			===Jumper Table===
	*1 USB Power - Enable this jumper to allow the board to be powerd via USB or power an attached accessory.		*<b>1 USB Power</b> - Enable this jumper to allow the board to be powerd via USB or power an attached accessory.
	**Default: ON		**Default: ON
	**Recommend turning this off if you need to ensure that your external device does not remain powered by the OA's 5V USB connection.		**Recommend turning this off if you need to ensure that your external device does not remain powered by the OA's 5V USB connection.
	*2 USB/RPi Selector - Determines whether the Open Access communicates via the mini-USB port or the Raspberry Pi connector		*<b>2 USB/RPi Selector</b> - Determines whether the Open Access communicates via the mini-USB port or the Raspberry Pi connector
	**Default: Both jumpers UP (USB)		**Default: Both jumpers UP (USB)
	**Set both jumpers in the pair to "USB" (top) setting to connect the serial output to the FTDI-based USB port.		**Set both jumpers in the pair to "USB" (top) setting to connect the serial output to the FTDI-based USB port.
	**Important: Move both jumpers for proper operation. One jumper is for TX and one is for RX to the Atmgea328P.		**Important: Move both jumpers for proper operation. One jumper is for TX and one is for RX to the Atmgea328P.
	*3 RS-485 Termination - Enables a termination resistor for end-of-bus on an RS-485 circuit		*<b>3 RS-485 Termination</b> - Enables a termination resistor for end-of-bus on an RS-485 circuit
	** Default: ON		** Default: ON
	** Recommendation: Leave this to ON if connecting 0-1 devices, or if it is the last unit in the circuit.		** Recommendation: Leave this to ON if connecting 0-1 devices, or if it is the last unit in the circuit.
	*4 Reset Enable - Can be used to disable the resetting and re-flashing of the Open Access CPU		*<b>4 Reset Enable</b> - Can be used to disable the resetting and re-flashing of the Open Access CPU
	** Default: ON (Reset enabled)		** Default: ON (Reset enabled)
	** Recommendation: Set this to OFF for increased security; setting it to OFF will prevent a reset and bootloader access. Set to OFF if a USB-attached peripheral may hard-reset and interfere with operation of the unit. Set to ON to allow programming/reset from USB.		** Recommendation: Set this to OFF for increased security; setting it to OFF will prevent a reset and bootloader access. Set to OFF if a USB-attached peripheral may hard-reset and interfere with operation of the unit. Set to ON to allow programming/reset from USB.