CONTROLS HARDWARE RELEASE NO. 51.2CONTROLS
CAMAC 183
DIGITAL OUTPUT
ED-218099
CONTROLS HARDWARE RELEASE NO. 51.2
CAMAC 183 Module
Digital Output
Active Low Outputs
Robert J. Ducar
April 14, 1986
1 DESCRIPTION
2 CAMAC 183 OP CODES
5 SPARES
6 DOCUMENTATION
7 PALS DOCUMENTATION
1 DESCRIPTION
The one-wide CAMAC 183 module provides basic digital
output control facilities. This module is exactly
equivalent to the CAMAC 182 module except for the control
line drivers being active low rather than active high
output. Thirty-two individual control lines are provided,
each being sourced from a 75446 peripheral driver. These
control lines are well suited as relay drivers, each being
capable of sinking up to 400 ma loads. Each output is diode
clamped to +24 volts for transient suppression. Each output
is also pulled-up to +24 volts with a 100K ohm resistor.
The diode clamps and pull-up resistors may be connected to
+5 volts rather than to +24 volts by means of a soldered
wire option. Modules are normally supplied with the +24
volt option.
The control lines are addressable as two separate 16 bit
words for monitor and control. The setting of one or more
output bits within one or the other control words is a two
step process. The first part of the process is the writing
of a 16 bit clock enable mask which defines the control bits
that may be altered. The data contained in the second
operation of writing the control word effect only those bits
selected by the previous mask. The read/modify/write
operation is thereby avoided. The two step setting process
easily accommodates bit, selected bits, nibble, and byte
control in applications where separate devices or parameters
are controlled from a single module.
Upon clear command or powering-up, all control lines are
set to the off state - non-conducting and high. The clock
enable masks are also set off.
2 CAMAC 183 OP CODES
All codes return module Q and X immediately.
This module never asserts LAM.
F(0) A(0) Read Control Word 0
---------
R16 (MSB) - (LSB) R1
---------------------------------
C0-15 - Control Word 0 - C0-0
F(0) A(1) Read Control Word 1
---------
R16 (MSB) - (LSB) R1
---------------------------------
C1-15 - Control Word 1 - C1-0
F(1) A(0) Read CW0 Clock Enable Mask
---------
R16 (MSB) - (LSB) R1
----------------------------------
C0-15 - CW0 Clk En Mask - C0-0
F(1) A(1) Read CW1 Clock Enable Mask
---------
R16 (MSB) - (LSB) R1
----------------------------------
C1-15 - CW1 Clk En Mask - C1-0
F(6) A(0) Read Module Number
---------
R16 - R9 | R8 - R1
-----------------------------
| 0 | B7 Hex, 183 Dec |
F(9) A(0) Reset Module
---------
This command is a logical or with
Z*S2 and power-up clear. It resets
the control outputs off and clock
enable masks to zero.
F(16) A(0) Write Control Word 0
----------
W16 (MSB) - (LSB) W1
---------------------------------
C0-15 - Control Word 0 - C0-0
F(16) A(1) Write Control Word 1
----------
W16 (MSB) - (LSB) W1
---------------------------------
C1-15 - Control Word 1 - C1-0
F(17) A(0) Write CW0 Clock Enable Mask
----------
W16 (MSB) - (LSB) W1
----------------------------------
C0-15 - CW0 Clk En Mask - C0-0
F(17) A(1) Write CW1 Clock Enable Mask
----------
W16 (MSB) - (LSB) W1
----------------------------------
C1-15 - CW1 Clk En Mask - C1-0
Example: To set the low byte of Control Word 1 to
$AB, the following commands are executed.
F(17) A(1) $00FF
F(16) A(1) $xxAB
3 CAMAC 183 MODULE - I/O ASSIGNMENTS
Rear I/O: 36 Position Edge Connector A = R B = L
POS SIGNAL POS SIGNAL
--- -------------- --- ----------------
1L Common 1R Common
2L C1-15 (MSB) 2R C0-15 (MSB)
3L C1-14 | 3R C0-14 |
4L C1-13 | 4R C0-13 |
5L C1-12 | 5R C0-12 |
6L C1-11 | 6R C0-11 |
7L C1-10 | 7R C0-10 |
8L C1-9 | 8R C0-9 |
9L C1-8 | 9R C0-8 |
10L C1-7 CW1 10R C0-7 CW0
11L C1-6 | 11R C0-6 |
12L C1-5 | 12R C0-5 |
13L C1-4 | 13R C0-4 |
14L C1-3 | 14R C0-3 |
15L C1-2 | 15R C0-2 |
16L C1-1 | 16R C0-1 |
17L C1-0 (LSB) 17R C0-0 (LSB)
18L Common 18R Common
4 CAMAC 183 MODULE - FRONT PANEL
The CAMAC 183 module has only a N led (Red, stretched) on
the front panel to indicate addressing from the CAMAC
dataway.
5 SPARES
A supply of CAMAC 183 operational spares is maintained on
the second floor of the Linac Annex. Modules are normally
supplied with the outputs diode-clamped and pulled-up to +24
volts.
6 DOCUMENTATION
0812-ED-218099 Schematic
0812-BD-218100 Artwork (RF-121)
0812-BD-218101 Master Drawing
0812-MD-34863 Outline Drawing
0812-MC-35821 Front Panel Mechanical
0812-MC-218103 Front Panel Silkscreen
7 PALS DOCUMENTATION
Directory: DEVL::USR$DISK3:[DUCAR.PALS]
Filenames: 18201A.DAT 1st Level NAF Decoder 82S153
18205A.DAT 2nd Level NAF Decoder 82S153
rjd: DEVL::USR$DISK3:[DUCAR.DOC]CMC183.RNO
