Brief description
APCIe-7xx0
2
Brief description
The boards
APCIe-7300, APCIe-7420, APCIe-7500
and
APCIe-7800
provide industrial PCs with one,
two, four or eight asynchronous serial interfaces for the communication with external devices.
The configuration of these communication boards is determined by SI modules, which are
automatically detected by the boards.
Via the SI modules, the serial interfaces can be fitted with the following transmission standards: RS232,
RS422, RS485 and TTY (with or without optical isolation). The SI modules with optical isolation offer
protection of up to 1000 V for harsh environments and prevent ground loops. The input/output lines
are protected against short-circuits, rapid transients, electrostatic discharges and high-frequency EMI.
The serial interfaces are supported by a 128-byte FIFO for data transmission and reception and
guarantee reliable operations with high data rates.
Features:
•
Transmission standards: RS232, RS422, RS485, TTY (20 mA current loop); free configuration for each
interface through SI modules
•
With/without optical isolation (1000 V)
•
FIFO buffer (128-byte) for each interface
•
UART-compatible with: 16C450, 16C550, 16C654, 16C750 and 16C950
Table 2-1: Number of serial interfaces
Board
Serial interfaces
APCIe-7300
1
APCIe-7420
2
APCIe-7500
APCIe-7500/4C
4
APCIe-7800
8
Cables
In terms of electromagnetic compatibility (EMC), the connection cables have the following properties:
•
Metallised connector housing
•
Shielded cable
•
Cable shield folded back over insulation and firmly screwed on both sides to the connector
housing.
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