7526 DCT Reference

Number Descriptions

The definition of numeric input is the same for the 7525 and 7526 DCTs.

Table 18. Definition of Numeric Input 


+==============+===============+=+=============+=======+=====+===============+
|           Character            | 7525 DCT Operation  | 7526 DCT Operation  |
+==============+===============+=+=============+=======+=====+===============+
|         Numbers (0-9)          |         Yes         |         Yes         |
+--------------+---------------+-+-------------+-------+-----+---------------+
|         Minus sign (-)         |         Yes         |         Yes         |
+--------------+---------------+-+-------------+-------+-----+---------------+
|       Decimal point (.)        |         Yes         |         Yes         |
+--------------+---------------+-+-------------+-------+-----+---------------+
|             Space              |         Yes         |         Yes         |
+--------------+---------------+-+-------------+-------+-----+---------------+
|       Special characters       |         Yes         |         Yes         |
+--------------+---------------+-+-------------+-------+-----+---------------+
|        (+ # % / $ & *)         |         Yes         |         Yes         |
+--------------------------------+---------------------+---------------------+

All characters are accepted in the sensor input port.

Appendix F. New Features and Enhancements

There are many new features and enhancements that have been added to the IBM 7526 Data Collection Terminal since V1.01. Below is a comprehensive listing of these features and enhancements.

New features and enhancements for V1.02.

New features and enhancements for V2.00.

New features and enhancements for V2.10.

New features for V3.00 include:

Appendix G. Terms and Abbreviations

ACK
positive acknowledgement
addr
address
API
application program interface
ASCII
American Standard Code for Information Interchange
bps
bits per second
CD
customer diagnostics
CFR
custom function routine
CMD
command
comm
communication
CS1
check sum sequence, first byte
CS2
check sum sequence, second byte
DC1
data download request
DC2
Used in Write to Display, CMD 2
DCT
Data Collection Terminal
DI/DO
digital input/digital output
DMA
direct memory access
EAN
European article numbering
ELF
entry level function
ESC
ASCII escape character
ETX
ASCII end-of-text character
FIFO
First-In First-Out
FRU
field-replaceable unit
h
Hexadecimal notation
HI
host interface application
Hz
Hertz
INT
interrupt
I/O
input/output
IPL
initial program loading
Kb
1024 bytes
Kbd
keyboard
Kbps
thousand bits per second
LCD
liquid crystal display
LED
light emitting diode
mA
milliampere(s)
mem
memory
misc
miscellaneous
mod
modulo
msec
millisecond(s)
NAK
negative acknowledgement
N/A
not applicable
NMI
non-maskable interrupt
OS
operating system
POST
power-on self test
prt
printer
PSP
program segment prefix
RAM
random access memory
RET
return from routine
ROM
read-only memory
RS
record separator
RSP
response
RTC
real-time clock
SCC
serial communications controller
Sen
sensor
Spk
speaker
STX
ASCII start-of-text character
S/W
software
Tmr
timer
TOD
time-of-day
TTL
transistor-transistor logic
UPC
Universal Product Code
USD
Uniform Symbol Description
Vio
video

Glossary:

(Ref #9.)

This glossary contains definitions for special terms as they are used in the context of this document.

B

bar code reader
A data entry device which reads data encoded on bar code labels. The reader may be either a slot reader or wand (scanner-type) reader, and operates by scanning the label with either a visible light source or an infrared light source.
buffered mode
One of three modes in which the system may be operated. Specifies how the terminal controller interacts with the data collection terminals. In this mode, transactions can be temporarily stored in the data collection terminal until they are sent to the terminal controller. This operational mode allows entering data into the system quickly, with minimum interaction between the terminal controller and the data collection terminals. (See also interactive mode, interactive/buffered mode.)

C

communications adapter
An RS-422/485 communications card installed in the terminal controller which provides the interface for connecting the data collection terminals to the terminal controller.
cold reset
A reset for initial start up of a new 7526; a 7526 in which the memory has been replaced; or a 7626 which has been cold reset from the setup menu selection. A cold reset requires entering all DCT setup parameters and downloading all of the files.
cool reset
A reset initiated through CMD 0 (Option = 1). Setup parameters are preserved and files must be downloaded.

D

data collection system
A system used to collect, store and process data and, optionally, to transmit the collected data to a host computer system for additional processing.
data collection terminal (DCT)
A specialized data-entry terminal that allows the entry of data via its keypad, a bar code reader, or magnetic stripe reader. Each terminal includes a keypad, microprocessor, random-access memory (RAM), Liquid Crystal Display (LCD), and input ports for additional data entry devices. The data-entry terminal is controlled by a program which runs on its microprocessor.
Data Collector
The control program which runs on an IBM personal or industrial computer serving as the terminal controller for the data collection system. This program performs data collection activities and provides the menus used for system management and control.
data entry method
The data entry method, normal or fast-clocking, affects how users interact with data collection terminals. With the normal data entry method, users must press a key on the data collection terminal or place a badge in a badge reader to initiate an entry. With the fast-clocking method, the terminal is always ready for multiple data entries.
data entry sequence
A specific set of steps that must be followed to enter data into a data collection terminal. Used with normal data entry or fast-clocking data entry. A typical data entry sequence consists of a series of prompts and related actions displayed at a data collection terminal. The prompts guide the user through the actions required to complete a transaction. A data entry sequence can be defined through the IBM Data Collector or the Data Collection Control/2 program menus. (See also fast-clocking data entry and normal data entry.)
data retention
The capability of data collection terminals to maintain the contents of the terminal's memory (RAM), including both data and operating instructions during a power outage. The memory on each data collection terminal is protected by a memory retention battery.
data verification files
User-created files that provide information specific to the user's organization. These files contain, for example, employee badge numbers, the names of all current employees, and employee IDs. Data verification information is defined and entered into the system at the terminal controller.
download
The process by which operating information or software in the form of files installed (loaded) on the terminal controller, is sent to the data collection terminals and stored in memory (RAM) on the data collection terminals.

F

fast-clocking data entry
One of two data entry methods that determine how users interact with data collection terminals. With this method, transactions can be entered without pressing a function key. This method is well-suited for time and attendance applications where many entries must be made quickly. Fast-clocking works only with buffered mode operation.
function keys
Each data collection terminal has a keypad with programmable function/alphabetic keys and a numeric keypad. The number of keys and their layout depend upon the model of the data collection terminal. The function keys can be programmed at the terminal controller with the use of the IBM Data Collection Systems to display certain prompts or to initiate a particular action. The alphabetic keys are used for data entries that require alphabetic input. They are used after a function key is pressed to initiate an action or function.

H

host application interface
Software installed on a host computer system which receives data transactions passed to the host computer from the terminal controller.
host applications
Software installed on a host computer system providing comprehensive analysis, inquiry and report capabilities using the data sent to the host computer from the data collection system.
host computer
The computer system to which transactions are sent after they are collected by the terminal controller. Typically, transactions are sent to a host computer for additional processing by production monitoring and control applications.
host communications support
A software product installed on the terminal controller which allows communication with a host computer system, allowing data transactions to be sent to the host computer. To operate, this software may also require the installation of an appropriate adapter card in the terminal controller. An emulation program may also be required in some applications.

I

idle state
A terminal state in which the terminal is operating but not processing a transaction; that is, the terminal may be receiving commands and sending replies via the communications port, but is waiting for the operator to initiate a transaction.
in service
A terminal operating condition under which the terminal will accept data from the operator and the terminal controller. (See also out of service)
industrial computer
Refers to any of the following IBM computer models (this list is not comprehensive) used as the terminal controller: IBM Industrial Computer Models 7531, 7532, 7541, 7542, 7546, 7552, 7561, 7562, 7568, or IBM GEARBOX Model 800.
interactive mode
One of three system operational modes that determine how the terminal controller interacts with the data collection terminals. In the interactive mode, transactions are processed by the terminal controller as they are entered at a data collection terminal. After a transaction has been entered into a data collection terminal, that terminal cannot accept another transaction until the stored transaction is processed by the terminal controller.
interactive/buffered mode
The interactive/buffered mode allows the terminal to build a transaction and lock out any further activity until the transaction is acted on by the host, or until a programmable timeout (Timer A) function occurs. If timeout occurs, the waiting transaction will be stored in a buffer, and the terminal can accept new transactions. The system will then operate in buffered mode until the host starts to poll the terminal again.

L

last read variable
The last input data string accepted by a transaction. Also known as user variable 0.

M

magnetic stripe reader
A data entry device which reads data encoded on a magnetic stripe affixed to a card or badge. The reader may be either a slot reader or wand (scanner-type) reader, and operates by scanning the magnetic stripe electronically.

N

normal data entry
One of two data entry methods in which data collection terminals can be used. With this method, users must press a function key prior to making an entry and then enter data as prompted by the data collection terminal. This method may be used with either the buffered or interactive operational modes.

O

operational modes
The operational modes, interactive, buffered, and interactive/buffered, affect how the terminal controller and data collection terminals interact. In the interactive mode, the terminal controller processes a transaction when it is entered at a data collection terminal. In the buffered mode, transactions are entered and then temporarily retained in the data collection terminal until they are collected and processed by the terminal controller. The interactive/buffered mode allows the terminal to build a transaction and lock out any further activity until the transaction is acted on by the terminal controller, or until a programmable timeout (Timer A) function occurs. An operational mode is specified in the operating instructions that are downloaded to the data collection terminals.
out of service
A terminal operating condition under which operator interaction with the terminal is not permitted, but the terminal can still communicate with the terminal controller (See also in service).

P

paragraph
A definition of 16 bytes of storage. For example there are 32 paragraphs in 512 bytes.
personal computer
Refers to any of the following IBM computer models (this list is not comprehensive) used as the terminal controller: IBM PS/2 Models 30/286, 40, 50, 50Z, 55SX, 56, 57, 60, 65, 70, P70, 76, 77, 80, 90, 95, or IBM PC AT. (See also terminal controller and industrial computer&per.)

T

terminal controller
An IBM personal computer or industrial computer that collects the data entered into data collection terminals, controls the operation of data collection terminals and stores the data.
transaction in progress
A terminal operating condition under which data is being collected and transmitted between the terminal and the terminal controller.

U

user variable 0
See last read variable.

W

warm reset.
A reset of the DCT initiated through CMD 0 (option = 0. All setup parameters and files are preserved.