IbmPosDisplay - Revision history

Bertrik Sikken at 14:50, 28 December 2016

2016-12-28T14:50:41Z

← Older revision		Revision as of 14:50, 28 December 2016
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	{{Project		{{Project
	\|Name=IbmPosDisplay		\|Name=IbmPosDisplay
	\|Status=~~Stalled~~		\|Status=Abandoned
	\|Contact=bertrik		\|Contact=bertrik
	}}		}}

Bertrik Sikken: Update project status

2014-05-09T11:36:53Z

Update project status

← Older revision		Revision as of 11:36, 9 May 2014
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			Status: we can't get communication going with the display using the "simple" protocol (send 0x05 + text + \n).

	{{Project		{{Project
	\|Name=IbmPosDisplay		\|Name=IbmPosDisplay
	\|Status=~~In progress~~		\|Status=Stalled
	\|Contact=bertrik		\|Contact=bertrik
	}}		}}

Bertrik Sikken at 20:29, 29 March 2014

2014-03-29T20:29:01Z

← Older revision		Revision as of 20:29, 29 March 2014
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	The display has the following markings on its PCB:		The display has the following markings on its PCB:
	Futabacorp KU-02194V-O N		Futabacorp KU-02194V-O N

			On the outside it has the following markings:
			* FRU P/N 73G1105
			* P/N 73G1100
			* S/N 41-N 1 5 1 8

	== Interface ==		== Interface ==

Bertrik Sikken at 22:31, 23 March 2014

2014-03-23T22:31:14Z

← Older revision		Revision as of 22:31, 23 March 2014
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	The characters on the display are of the [http://en.wikipedia.org/wiki/Vacuum_fluorescent_display VFD] type, in blue/cyan.		The characters on the display are of the [http://en.wikipedia.org/wiki/Vacuum_fluorescent_display VFD] type, in blue/cyan.

	The display has the following markings:		The display has the following markings on its PCB:
	Futabacorp KU-02194V-O N		Futabacorp KU-02194V-O N

Line 33:		Line 33:
	* possible protocol description: [http://www-01.ibm.com/support/docview.wss?uid=pos1R1004948 SurePOS 500 Device Commands: 2x20 Customer Display]		* possible protocol description: [http://www-01.ibm.com/support/docview.wss?uid=pos1R1004948 SurePOS 500 Device Commands: 2x20 Customer Display]
	* appendix G ("Input/Output device commands", page 56) of [http://www-01.ibm.com/support/docview.wss?uid=pos1R1003129&aid=1 SurePOS 500 Model XX3 Technical System Reference, version 1.3]		* appendix G ("Input/Output device commands", page 56) of [http://www-01.ibm.com/support/docview.wss?uid=pos1R1003129&aid=1 SurePOS 500 Model XX3 Technical System Reference, version 1.3]
			* [https://www.mikrocontroller.net/topic/62831 discussion on www.mikrocontroller.net] about this display

Bertrik Sikken at 19:33, 21 March 2014

2014-03-21T19:33:51Z

← Older revision		Revision as of 19:33, 21 March 2014
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	The display in question contains two rows of 20 characters each.		The display in question contains two rows of 20 characters each.
	The characters on the display are of the [http://en.wikipedia.org/wiki/Vacuum_fluorescent_display VFD] type, in blue/cyan.		The characters on the display are of the [http://en.wikipedia.org/wiki/Vacuum_fluorescent_display VFD] type, in blue/cyan.

			The display has the following markings:
			Futabacorp KU-02194V-O N

	== Interface ==		== Interface ==

Bertrik Sikken: Upgrade status from "initializing" to "in progress"

2014-03-20T19:09:43Z

Upgrade status from "initializing" to "in progress"

← Older revision		Revision as of 19:09, 20 March 2014
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	{{Project		{{Project
	\|Name=IbmPosDisplay		\|Name=IbmPosDisplay
	\|Status=~~Initializing~~		\|Status=In progress
	\|Contact=bertrik		\|Contact=bertrik
	}}		}}

Bertrik Sikken at 19:01, 20 March 2014

2014-03-20T19:01:30Z

← Older revision		Revision as of 19:01, 20 March 2014
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	== Interface ==		== Interface ==
	The electrical interface to the display consists of 4 wires~~, probably an RS485 interface~~, possibly:		The electrical interface to the display consists of 4 wires, possibly:
	* ground		* ground
	* data A (inverting), D-		* data A (inverting), D-
	* data B (non-inverting), D+		* data B (non-inverting), D+
	* power (12V) - red		* power (12V) - red

			This is most likely an RS485 interface, because there is a 75176 (differential bus transceiver) inside the display.

	A very simple RS232-to-RS485 conversion can be done by simply biasing the inverting data pin (data A) to half the supply voltage, and connecting the RS232 data line directly to the non-inverting data pin (data B).		A very simple RS232-to-RS485 conversion can be done by simply biasing the inverting data pin (data A) to half the supply voltage, and connecting the RS232 data line directly to the non-inverting data pin (data B).

	== TODO ==		== TODO ==
	* Are we really sure this it has an RS485 interface? (where did that idea come from?)
	* Figure out baud rate		* Figure out baud rate
	* Write software to control the display		* Write software to control the display

Bertrik Sikken at 18:34, 20 March 2014

2014-03-20T18:34:41Z

← Older revision		Revision as of 18:34, 20 March 2014
Line 28:		Line 28:
	Possible protocol descriptions:		Possible protocol descriptions:
	* possible protocol description: [http://www-01.ibm.com/support/docview.wss?uid=pos1R1004948 SurePOS 500 Device Commands: 2x20 Customer Display]		* possible protocol description: [http://www-01.ibm.com/support/docview.wss?uid=pos1R1004948 SurePOS 500 Device Commands: 2x20 Customer Display]
	* appendix G ("Input/Output device ~~comma op IPnds~~ ", page 56) of [http://www-01.ibm.com/support/docview.wss?uid=pos1R1003129&aid=1 SurePOS 500 Model XX3 Technical System Reference, version 1.3]		* appendix G ("Input/Output device commands", page 56) of [http://www-01.ibm.com/support/docview.wss?uid=pos1R1003129&aid=1 SurePOS 500 Model XX3 Technical System Reference, version 1.3]

Glu at 18:22, 20 March 2014

2014-03-20T18:22:18Z

← Older revision		Revision as of 18:22, 20 March 2014
Line 14:		Line 14:
	The electrical interface to the display consists of 4 wires, probably an RS485 interface, possibly:		The electrical interface to the display consists of 4 wires, probably an RS485 interface, possibly:
	* ground		* ground
	* power (5V?) - red
	* data A (inverting), D-		* data A (inverting), D-
	* data B (non-inverting), D+		* data B (non-inverting), D+
			* power (12V) - red

	A very simple RS232-to-RS485 conversion can be done by simply biasing the inverting data pin (data A) to half the supply voltage, and connecting the RS232 data line directly to the non-inverting data pin (data B).		A very simple RS232-to-RS485 conversion can be done by simply biasing the inverting data pin (data A) to half the supply voltage, and connecting the RS232 data line directly to the non-inverting data pin (data B).
Line 28:		Line 28:
	Possible protocol descriptions:		Possible protocol descriptions:
	* possible protocol description: [http://www-01.ibm.com/support/docview.wss?uid=pos1R1004948 SurePOS 500 Device Commands: 2x20 Customer Display]		* possible protocol description: [http://www-01.ibm.com/support/docview.wss?uid=pos1R1004948 SurePOS 500 Device Commands: 2x20 Customer Display]
	* appendix G ("Input/Output device ~~commands~~ ", page 56) of [http://www-01.ibm.com/support/docview.wss?uid=pos1R1003129&aid=1 SurePOS 500 Model XX3 Technical System Reference, version 1.3]		* appendix G ("Input/Output device comma op IPnds ", page 56) of [http://www-01.ibm.com/support/docview.wss?uid=pos1R1003129&aid=1 SurePOS 500 Model XX3 Technical System Reference, version 1.3]

Bertrik Sikken at 16:14, 20 March 2014

2014-03-20T16:14:34Z

← Older revision		Revision as of 16:14, 20 March 2014
Line 11:		Line 11:
	The characters on the display are of the [http://en.wikipedia.org/wiki/Vacuum_fluorescent_display VFD] type, in blue/cyan.		The characters on the display are of the [http://en.wikipedia.org/wiki/Vacuum_fluorescent_display VFD] type, in blue/cyan.

			== Interface ==
	The interface to the display consists of 4 wires, probably an RS485 interface, possibly:		The electrical interface to the display consists of 4 wires, probably an RS485 interface, possibly:
	* ground		* ground
	* power (5V?) - red		* power (5V?) - red
	* ~~RX?~~		* data A (inverting), D-
	* ~~TX?~~		* data B (non-inverting), D+

			A very simple RS232-to-RS485 conversion can be done by simply biasing the inverting data pin (data A) to half the supply voltage, and connecting the RS232 data line directly to the non-inverting data pin (data B).

			== TODO ==
			* Are we really sure this it has an RS485 interface? (where did that idea come from?)
			* Figure out baud rate
			* Write software to control the display

	External links:		== External links ==
			Possible protocol descriptions:
	* possible protocol description: [http://www-01.ibm.com/support/docview.wss?uid=pos1R1004948 SurePOS 500 Device Commands: 2x20 Customer Display]		* possible protocol description: [http://www-01.ibm.com/support/docview.wss?uid=pos1R1004948 SurePOS 500 Device Commands: 2x20 Customer Display]
	* appendix G ("Input/Output device commands ", page 56) of [http://www-01.ibm.com/support/docview.wss?uid=pos1R1003129&aid=1 SurePOS 500 Model XX3 Technical System Reference, version 1.3]		* appendix G ("Input/Output device commands ", page 56) of [http://www-01.ibm.com/support/docview.wss?uid=pos1R1003129&aid=1 SurePOS 500 Model XX3 Technical System Reference, version 1.3]