CIO-DO48H, CIO-DO96H and
CIO-DO192H
USER’S 'UIDE
Revision 4
April, 2001
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HM CIO-DOxxH.lwp
right 2001,
Measurement Computing Corporation
Table of Contents
1 INTRODUCTION ...................................
2 SOFTWARE INSTALLATION ........................
3 HARDWARE SETUP ................................
3.1 BASE ADDRESS
4 HARDWARE INSTALLATION ........................
4.1 INSTALL BOARD
4.2 CABLING TO THE CONNECTOR
4.3 SIGNAL CONNECTION
4.4 CONNECTOR DIAGRAM AND REGISTER
ASSIGNMENTS
5 DATA REGISTERS ..................................
6 SPECIFICATIONS ..................................
7 TTL TO SOLID STATE RELAYS.....................
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1 INTRODUCTION
The CIO-DO48H, 96H and 192H are designed to have the best quality and lowest
cost of any digital output board. Throughout this manual the notation CIO-DOxxH
is used when the information applies to the CIO-DO48H, CIO-DO96H and
CIO-DO192H inclusive. Exclusive information for a particular version will be
identified.
The ‘H’ designation indicates that these boards are capable of ‘High Drive’. High
Drive TTL is capable of higher currents than standard TTL. Rather than a few
milliamps or even microamps, High Drive outputs are capable of tens of milliamps.
See the electrical specification in this manual for details.
In addition to high drive the CIO-DOxxH boards have another advantage over
82C55 based boards in that there is no control register to set the po r t direction from
input to output. The CIO-DOxxH boards are output only. In applications where the
digital output is being used to control a relay that is switching an inductive load, the
82C55 is subject to resets and “glitching”, while the CIO-DOxxH is not.
The connector pin specification of all the CIO-DO and CIO-DI family of digital
boards may be used in place of one another without changing cabling or connectors.
All these products are supported by Universal Library programming library.
2 SOFTWARE INSTALLATION
In order to easily test your installation, it is recommended that you install InstaCal,
the installation, calibration and test utility that was supplied with your board. Refer
to the Software Installation Manual for information on the initial setup, loading, and
installation of InstaCal and optional Universal Library software.
InstaCal will guide you through hardware settings and allow you to easily test for
conflicts. If you decide not to use InstaCal to assist board configuration, details are
provided in the following section.
1
3 HARDWARE SETUP
Open your PC (after turning off the power) and install the board. Leave the switches
as they were set at the factory or refer to the information below to change the
settings. After the board is installed and the computer is closed up, turn the power
back on.
3.1 BASE ADDRESS
The CIO-DO48 employs the PC bus for power, communications and data transfer.
As such it draws power from the PC, monitors the address lines and control signals
and responds to it's I/O address, and it receives and places data on the eight data
lines.
The BASE address is the most important user-selectable feature of the CIO-DO##H
series. The base address is the starting location that software writes to when
communicating with the CIO-DO##H.
A set of DIP switches is used for setting the base address. By placing the switch
down, the CIO-DO##H address decode logic is instructed to respond to that address
bit.
A complete address is constructed by calculating the HEX or decimal number which
corresponds to all the address bits the board has been instructed to respond to. For
example, in Figure 3-1, for address 300h, switches 9 and 8 are DOWN, all others
UP.
Address 9 = 200h (512D) and address 8 = 100h (256D), when added together they
equal 300h (768D).
NOTE
DISREGARD THE NUMBERS PRINTED ON THE SWITCH. REFER TO THE
NUMBERS PRINTED IN WHITE ON THE BOARD.
In Figure 3-1, note that the number of switches varies with the board version.
Certain addresses are used by the PC, others are free and may be used by the
CIO-DO48 and other expansion boards. We recommend the factory default address,
BASE = 300h (768D), be tried first.
2
Figure 3-1. Base Address Switches - All Versions
3
Table 3-1. PC I/O Address Summary
FUNCTIONHEX
RANGE
070-071
(AT)
The CIO-DO48 BASE switch may be set for address in the range of 000-3F8 so it
should not be hard to find a free address area for your CIO-DO48. Once again, if
you are not using IBM prototyping cards or some other board which occupies these
addresses, then 300-31Fh are free to use.
RANGE
FUNCTIONHEX
EGA2C0-2CF8237 DMA #1000-00F
EGA2D0-2DF8259 PIC #1020-021
GPIB (AT)2E0-2E78253 TIMER040-043
SERIAL PORT2E8-2EF8255 PPI (XT)060-063
SERIAL PORT2F8-2FF8742 CONTROLLER (AT)060-064
PROTOTYPE CARD300-30FCMOS RAM & NMI MASK
PROTOTYPE CARD310-31FDMA PAGE REGISTERS080-08F
HARD DISK (XT)320-32F8259 PIC #2 (AT)0A0-0A1
PARALLEL PRINTER378-37FNMI MASK (XT)0A0-0AF
SDLC380-38F8237 #2 (AT)0C0-0DF
SDLC3A0-3AF80287 NUMERIC CO-P (AT)0F0-0FF
MDA3B0-3BBHARD DISK (AT)1F0-1FF
PARALLEL PRINTER3BC-3BFGAME CONTROL200-20F
EGA3C0-3CFEXPANSION UNIT (XT)210-21F
CGA3D0-3DFBUS MOUSE238-23B
SERIAL PORT3E8-3EFALT BUS MOUSE23C-23F
FLOPPY DISK3F0-3F7PARALLEL PRINTER270-27F
SERIAL PORT3F8-3FFEGA2B0-2BF
Addresses not specifically listed, such as 390-39Fh, are not reserved and may be
available. Check your computer for other boards which may use I/O addresses.
4
4 HARDWARE INSTALLATION
4.1 INSTALL BOARD
1. Turn the power off.
2. Remove the cover of your computer. Be careful not to dislodge any of the cables
installed on the boards in your computer as you slide the cover off.
3. Locate an empty expansion slot in your computer.
4. Push the board firmly down into the expansion bus connector. If it is not seated
fully it may fail to work and could short circuit the PC bus power onto a PC bus
signal. This could damage the motherboard in your PC as well as the CIO-DOxxH.
4.2 CABLING TO THE CONNECTOR
The connector(s) are accessible through the PC/AT expansion bracket. The
connector is a standard 50 pin header connector. A cable with mating connectors
(C50FF-#) can be purchased from Mesurement Computing Corp.
Those familiar with the CIO-DIO##H boards will find the signal levels and pin
assignments are identical with those on the CIO-DOxxH.
4.3 SIGNAL CONNECTION
The CIO-DOxxH signals are buffered (high output drive) STTL. STTL is an
electronics industry term, short for Schotky Transistor Transistor Logic, which
describes a standard for digital signals which are either at 0V or 5V.
Under normal operating conditions, the voltages on the output pins range from near
0 volts for the low state to near 5.0 volts for the high state.
CAUTION
Voltages and currents associated with external devices can range from less than a
hundred mA at a few volts for a small flash light bulb to 50 Amps at 220 volts for a
large electric range. Attempting to connect either of these devices directly to the
CIO-DO48 would destroy the output buffer chip.
5
4.4 CONNECTOR DIAGRAM AND REGISTER
ASSIGNMENTS
The CIO-DOxxH user connector is one to four 50-pin header-type connectors
accessible from the rear of the PC through the expansion backplate. The signals
available are direct connections to a digital buffer chip.
The connector accepts female 50-pin header type connectors, such as those on the
C50FF-2, a 2-foot cable with female connectors.
Figure 4-1. User Connector Pinout and Register Assignments
Figure 4-1 shows the register assignments for the outputs of all three board versions.
If frequent changes to signal connections or signal conditioning is required, please
refer to the information on the CIO-TERM100, CIO-SPADE50 and CIO-MINI50
screw terminal boards.
6
5 DATA REGISTERS
Each CIO-DOxxH is composed of parallel output chips. Each address contains one
latch and one buffer contro l ling eight output pi ns. The port s are arranged in sets of
3, with an intervening NA (not used) address area. This scheme allows
compatibility with software written to control 82C55 based boards when the 82C55
is used as all outputs. On those boards every fourth address contains a control
register.
The first address, or BASE ADDRESS 0 , is determined by setting a bank of
switches on the board.
The data registers and their output function are listed on Table 5-1. Each register
has eight output bits. Thus:
CIO-DO48H uses registers 0 to 6 (six registers x 8 bits = 48; skip registers 3 &7)
CIO-DO96H uses registers 0 to 14 (12 registers x 8 bits = 96; skip four registers.)
CIO-DO192H uses registers 0 to 30 (24 registers x 8 bits = 192; skip eight
registers.)
To write a control data to an output register, the individual bits must be set to 0 or 1
then combined to form a Byte.
Table 5-1. Data Register Address Summary - All Board Versions
READ ADDRESSES
The port identities (A, B, and C) repeat for each set of 24 digital output lines, so the
CIO-DO48 has two sets of ports, the DO96 has four and the DO192 has eight.
PORT A DATA
BASE ADDRESS + 0 (See Table 5-1 for remaining addresses.)
PORT B DATA
BASE ADDRESS + 1 (See Table 5-1 for remaining addresses.)
7
WRITE
FUNCTION
Port A OutputNoneBASE +0, 4, 8, 12, 16, 20, 24, 28
Port B OutputNoneBASE +1, 5, 9, 13, 17, 21, 25, 29
Port C OutputNoneBASE +2, 6, 10, 14, 18, 22, 26, 30
None (skip)NoneBASE +3, 7, 11, 15, 19, 23, 27, 31
01234567
A0A1A2A3A4A5A6A7
01234567
PORT C DATA
BASE ADDRESS + 2 (See Table 5-1 for remaining addresses.)
B0B1B2B3B4B5B6B7
01234567
C0C1C2C3C4C5C6C7
8
6 SPECIFICATIONS
Power consumption
+5V quiescent
CIO-DO48H 0.75A typ, 1.0A max
CIO-DO96H 1.3A typ, 1.7A max
CIO-DO192H 2A typ, 2.6A max
Digital Input / Output
Digital Type 74S244
Configuration Output only
CIO-DO48H 6 banks of 8 bits, 48 total outputs
CIO-DO96H 12 banks of 8 bits , 96 total outputs
CIO-DO192H 24 banks of 8 bits , 192 total outputs
Output High 2.4 volts min @ -15mA
Output Low 0.5 volts max @ 64 mA
Power-up / reset state Logic low
Environmental
Operating temperature range 0 to 70°C
Storage temperature range -40 to 100°C
Humidity 0 to 90% no n-condensing
9
7 TTL TO SOLID STATE RELAYS
High AC and high DC voltage devices cannot be controlled direc tly by the outputs
of a CIO-DOxxH.
Solid State Relays are used control and monitoring of AC and high DC voltages.
They can provide up to 4000V of isolation. Solid State Relays (SSRs) are the
recommended method of interfacing to AC a nd high DC signals.
The most convenient way to use solid state relays and a CIO-DO##H board is to use
a Solid State Relay Rack. An SSR Rack is a circuit board that has sockets to accept
SSRs.
A variety of SSR modules and racks are available from Measurement Computing
Corp.
10
EC Declaration of Conformity
We, Measurement Computing Corp., declare under sole responsibility that the
product:
DescriptionPart Number
CIO-DO48H
CIO-DO96H
CIO-DO192H
to which this declaration relates, meets the essential requirements, is in conformity
with, and CE marking has been applied according to the relevant EC Directives listed
below using the releva nt section of the following EC standards and other normative
documents:
EU EMC Directive 89/336/EEC: Essential requirements relating to electromagnetic
compatibility.
EU 55022 Class B: Limits and methods of measurements of radio interference
characteristics of information technology equipment.
EN 50082-1: EC generic immunity requirements.
Digital output board
Digital output board
Digital output board
IEC 801-2: Electrostatic discharge requirements for industrial process measurement
and control equipment.
IEC 801-3: Radiated electromagnetic field requirements for industrial process
measurements and control equipment.
IEC 801-4: Electrically fast transients for industrial process measurement and
control equipment.
Carl Haapaoja, Director of Quality Assurance
Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, Massachusetts 02766
(508) 946-5100
Fax: (508) 946-9500
E-mail: info@mccdaq.com
www.mccdaq.com
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