SERIES IP521 INDUSTRIAL I/O PACK EIA/TIA-422B SERIAL COMMUNICATION MODULE
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- 3 -
•
64-Character FIFO Buffers -
Both the transmit and receive
channels of each serial port provide 64-byte data buffering to
reduce CPU interactions and interrupts. This allows the
external processor to handle more tasks within a given time.
•
Programmable Character Size -
Each serial port is software
programmable for 5, 6, 7, or 8 bit character sizes.
•
Programmable Stop Bits -
Each serial port allows 1, 1-1/2, or
2 stop-bits to be added to, or deleted from, the serial data
stream
.
•
Programmable Parity Generation & Detection
- Even, Odd,
or No Parity generation and detection is supported
.
•
Line-Break Generation & Detection -
provision for sending
and detecting the line break character is provided.
•
False Start Bit Detection -
Prevents the receiver from
assembling false data characters due to low-going noise spikes
on the RxD input line.
•
Programmable Baud Rate -
The internal baud rate generator
allows the 921.6K maximum baud rate to be divided by any
divisor between 1 and 2
(16-1)
, providing support for all standard
baud rates.
•
Interrupt Support -
Individually controlled transmit empty,
receive ready, line status, data set, & flow control interrupts
may be generated. Unique interrupts can be assigned to each
port. Interrupts use a priority shifting scheme based on the last
interrupt serviced, preventing the continuous interrupts of one
port from blocking the interrupts of another port.
•
Socketed Termination and Bias Resistors
- The network
termination and bias resistors are installed in sockets on the
board and may be easily inserted or removed where required.
•
Failsafe Receivers
- The receivers employed in this model
include a fail-safe feature which guarantees a high output state
when the inputs are left open or floating.
•
Internal Diagnostic Capabilities
- Loopback controls for
communication link fault isolation are included. Break, parity,
overrun, and framing error simulation are also possible.
•
Compatible with Industry Standard UARTs
- The UART of
this IP module is compatible with the industry standard
ST16C554/654, ST68C554/654, and TL16C544. Additionally,
this device can operate in a 16C450 UART family software
compatible mode. The transmit and receive channels are
double-buffered in this mode. Hold and shift registers eliminate
the need for precise synchronization between the host CPU
and the serial data.
•
Software Flow Control
- One or two sequential receive data
characters are compared to a programmed Xon or Xoff
character value. Data transmission can be suspended or
resumed via software flow control.
•
Sleep Mode
-The UART can be set via register control to a
special sleep mode to reduce power consumption when the
chip is not being used.
•
Extended Temperature Performance Option -
Model IP521-
E units support operation from -40
°
C to +85
°
C.
INDUSTRIAL I/O PACK INTERFACE FEATURES
•
High density -
Single-size, industry standard, IP module
footprint. Four/five units mounted on a carrier board provide up
to 32/40 serial ports in a single system slot.
•
Local ID
- Each IP module has its own 8-bit ID information
which is accessed via data transfers in the "ID Read" space.
•
8-bit I/O
- Port register Read/Write is performed through 8-bit
data transfer cycles in the IP module I/O space.
•
High Speed
- Access times for all data transfer cycles are
described in terms of "wait" states - 1 wait state is required for
reading/writing channel data, 2 wait states for interrupt select
cycles, and 0 wait states for reading the ID space (see the
Specifications section for detailed information).
SIGNAL INTERFACE PRODUCTS
(See Appendix for more information on compatible products)
This IP module will mate directly to any industry standard IP
carrier board (including Acromag’s AVME9630/9660 3U/6U non-
intelligent VMEbus carrier boards). Additionally, PC/AT carrier
boards are also supported (see the Acromag Model APC8620
PCIbus carrier board). A wide range of other Acromag IP modules
are available to serve your signal conditioning and interface needs.
Note:
Since all connections to field signals are made through the
carrier board which passes them to the individual IP modules, you
should consult the documentation of your carrier board to ensure
compatibility with the following interface products.
Cables:
Model 5025-551-X (Shielded Cable), or Model 5025-550-X
(Non-Shielded Cable): A Flat 50-pin cable with female
connectors at both ends for connecting AVME9630/9660,
APC8610, or APC8620 carrier boards, to Model 5025-552
termination panels. The unshielded cable is recommended for
digital I/O, while the shielded cable is recommended for
optimum performance with precision analog I/O applications.
The “-X” suffix of the model number is used to indicate the
length in feet.
Termination Panels:
Model 5025-552: A DIN-rail mountable panel that provides 50
screw terminals for universal field I/O termination. Connects to
Acromag AVME9630/9660, APC8610, or APC8620 carrier
boards, via flat 50-pin ribbon cable (Model 5025-550-X or 5025-
551-X).
Transition Module:
Model TRANS-GP: This module repeats field I/O connections
of IP modules A through D for rear exit from a VMEbus card
cage. It is available for use in card cages which provide rear exit
for I/O connections via transition modules (transition modules
can only be used in card cages specifically designed for them).
It is a double-height (6U), single-slot module with front panel
hardware adhering to the VMEbus mechanical dimensions,
except for shorter printed circuit board depth. It connects to
Acromag Termination Panel 5025-552 from the rear of the card
cage, and to AVME9630/9660 boards within the card cage, via
flat 50-pin ribbon cable (cable Model 5025-550 or 5025-551).
