C453 -- Quad Ramp Generator

This device gets a name like I:H100 (no suffix).

SSDN: (Reading)

SSDN (Setting, Status, Control, Digital alarm):

The '1' in the 2nd nibble of the 4th word is the code that the special application page can key off of to identify this device.

Readings	MADC channel.
Settings	G(i) table as an array device. There are fifteen tables per 453 channel, each 64 words long. Thus the maximum length parameter is either 128 bytes (one table) or 1920 (fifteen tables). The parameter page picks an individual number out of this array for display. PRO SETTNG (2, 1920, 60) ! for 15 tables PDB SETTNG ('VOLT', 'UNIT', 0, 6, 2, 0, 0, 0, 12.5, 1.0) ! -128 to +127
Status	Regulator Power Supply status. 2 words long. Lower 6 bits: F(4)A(1) word Bit 0: Tracking error alarm Bit 1: Overcurrent Bit 2: Magnet overpower Bit 3: Amplifier overvoltage Bit 4: Enable / disable Bit 5: Calculation error Bit 15: Stop/continue word (which seems to need only 1 bit). Upper word: Special configuration word. The stop/continue and special configuration words are placed here for convenience. It seems to to me that the PDB scaling includes only ON/OFF and READY/NOT READY. I have assigned all the error bits to "not ready" PDB scaling. I'm not sure of the sense of these, so the PDB may have to change. PRO BASTAT (4, 4, 60) PDB BASTAT (3, 1, 0010, 000F, 0, 0, 4)
Control	Basic control codes are two words long. In general the upper word is zero. The codes can be placed in the basic control PDB with upper word zero to achieve normal basic control. The codes are as follows: Code Meaning PDB Slot Camac Function ---- ------- -------- -------------- 1 Ramp Disable OFF F24A5 2 Ramp Enable ON F26A5 3 Reg. Reset RESET F26A8 4 Ramp Enable POL + F26A5 5 Ramp Disable POL - F24A5 6 Continue none F18A6 (FFFF) 7 Stop none F18A6 (0000) 8 Special configuration word follows. The Continue and Stop commands are included for completeness. Code 8 in the lower word of the basic control setting value means that the upper word contains the special configuration word to be written with F(18)A(5). PRO BCNTRL (4, 4, 60) PDB BCNTRL (1F, 3, 2, 1, 4, 5)
Alarms	We are supporting digital alarms only. There is presently no way to have meaningful analog alarms on a ramped device. If it should be desirable to support an analog alarm on event (e.g. reset) then it is possible to use the existing facilities. The alarm mask, nominal, and reset will follow the lower 6 bits of the basic status, i.e. the Special Power Supply Status word. The other status information (stop/continue stuff) placed in the basic status for programmer convenience is not alarmed. PRO DGALBL (4, 20, 60, 0010, 0010, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0) PRO DGALTX (0, 0, 5, '')

This device returns and accepts scaled data. The hardware contains the scaling factor used to convert between raw and cooked values.

SSDN: (Setting, Reading)

SSDN: (Basic Status, Basic Control)

Where kk is the interrupt number.

These are wholly optional. You can create these devices, if you wish, for the purpose of knobbing groups of slots in a table all at the same time. They are NOT included in the family device. The reading property is typically set up the same as the parameter page device.

SSDN: (Reading)

SSDN: (Setting)

Where kk is a combination of the table type (top 2 bits) and the table number (0-15) (bottom 6 bits) (0 -> use data offset).
(Table types: 0 -> F(t), 1 -> G(i), 2 -> H(i))
The setting property should always have a length of 2 bytes.

DEVICES PER 453 CARD

There are presently five devices in the per-card set:

1. Bulk Power Supply parameter page device (SSDN code 8)
2. G(i) abcissa values (SSDN code 9)
3. H(i) abcissa values (SSDN code 10)
4. Clock events (SSDN code 11)
5. MDAT selections (SSDN code 12)

Bulk Power Supply device

Actually, there will be one of these devices in the data base for every 453 card, whether or not there is a bulk power supply attached. The reason is that there are several status bits, some of which may be alarmable, which the 453 card can generate on its own.

I know of no reading or setting properties for this device.

Proposed name: I:14RCx (for the cards in crate 14)

SSDN: (All Properties)

Basic Status

Two words long.

Low word: The bulk PS status word, obtained from F(1)A(0).

High word: LAM status word, obtained from F(4)A(12). This word contains a number of error bits which are not related to the bulk PS, and is the primary reason we have this device in the database even if there is no bulk PS attached to the card.

	PRO BASTAT (4, 4, 60)
	PDB BASTST (to be determined)

Basic Control

Two words long, but only the lower word is used. The basic control codes, which can be placed in a PDB for parameter page use, are:

	Code  Meaning           PDB Slot  Camac Function
	----  -------           --------  --------------
	  1   PS OFF            OFF       F24A1
	  2   PS ON             ON        F26A1
	  3   PS Reset          RESET     F26A7
	  4   unused		           
	  5   Toggle polarity   POL -     F24A3

	PRO BCNTRL (2, 2, 60)
	PDB BCNTRL (to be determined)

Alarms

The digital alarm follows the basic status property, with the execption of four bits which we ignore.

There is a single bit for each channel which is funneled through the LAM word. These bits are the alarm bypass bits for the individual waveform devices, and thus I will not permit operators to use them here. They will always appear to be masked.

	PRO DGALBL (2, 20, 60, 0000, 0000,
	            4, 1, 1, 0, 0, 0, 0,
	            0, 0, 0)
	PRO DGALTX (0, 0, 5, '')

Setting

Not needed, but quite convenient for calling DBAREQ in application pages. The setting property on this device reads and sets the 'B' board analog mux. Note that the reference signal device controls this mux automatically.

G(i) and H(i) abcissa values

SSDN: (Setting)

There are 32 words in each of these devices, containing MDAT values for the waveform function abcissas.

	PRO SETTNG (2, 64, 60) ! no PDB needed

Proposed names: Following the above, I:14RC5G and I:14RC5H.

Clock events

SSDN: (Setting, Basic Status, Basic Control)

Setting:

256 words long, containing 8 word blocks (= 8 clock events) for each of 32 interrupt levels.

	PRO SETTNG (2, 256, 60)

Status:

A single word containing the F(4)A(15) clock event enable flag.

		Bit  0:  1=clock event interrupts disabled (OFF)

	PRO BASTAT(2, 2, 60)
	PDB BASTAT(1, 0, 1, 0, 0, 0, 2) ! ON/OFF status

Basic Control:

The basic control for the reference device enables and disables the clock event interrupts.

Basic control codes are only one word long. The front end ignores the upper word, but I recommend that you keep it zero in case we want to support other basic control options.

The codes are as follows:

		Code  Meaning            PDB Slot  Camac Function
		----  -------            --------  --------------
		  1   Disable interrupts   OFF        F24A4
		  2   Enable interrupts    ON         F26A4
		  3   unused               RESET
		  4   unused               POL +     
		  5   unused               POL -

	PRO BCNTRL (4, 4, 60)
	PDB BCNTRL (6, 0, 2, 1, 0, 0)

Proposed name: I:14RC5C

MDAT Selections

SSDN: (Setting)

One word long. Contains the sources of MDAT (the standard MDAT codes, I think) for the G(i) function (high byte) and H(i) function (low byte).

	PRO SETTNG (2, 2, 60)

Proposed name: I:14RC5M