PCI-1753

The PCI-1753 is a 96-bit digital I/O card for the PCI bus, which can be extended to 192 digital I/O channels by connecting with its extension board, PCI-1753E. The card emulates mode 0 of the 8255 PPI chip, but the buffered circuits offer a higher driving capability than the 8255. The 96 I/O lines are divided into twelve 8-bit I/O ports: A0, B0, C0, A1, B1, C1, A2, B2, C2, A3, B3 and C3. Users can configure each port as input or output via software.

Easy to Install: Plug and Play

The PCI-1753 uses a PCI controller to interface the card to the PCI bus. The controller fully implements the PCI bus specification Rev 2.1. All bus relative configurations, such as base address and interrupt assignment, are automatically controlled by software.

Dry Contact Support for Digital Input

Each digital input channel of the PCI-1753/1753E accepts either 0 ~ 5 V DC wet contact or dry contact inputs. This dry contact capability allows the channel to respond to changes in external circuitry (e.g., the closing of a switch in the external circuitry) when no voltage is present in the external circuit.

Reset Protection Fulfills the True Requirement of Industrial Applications

When the system is hot reset (the power is not turned off), the PCI-1753/1753E can either retain the value of the last I/O port settings and outputs, or return to its default configuration, depending on the jumper setting. This function protects the system from wrong operations during unexpected system resets.

Interrupt Functions Ensure Faster System Response

Two lines of each port C (i.e., ports C0, C1, C2 and C3) are connected to an interrupt circuit. The “Interrupt Control Register” of the PCI-1753/PCI-1753E controls how these signals generate an interrupt. Two interrupt request signals can be generated at the same time, and then the software can process these two request signals by ISR. The dual interrupt sources provide the card with more capability and flexibility. The PCI-1753/1753E also provides “Pattern Match” interrupt function for port A0. The card monitors the states of port A0 and compares them with a pre-set pattern. When the received state matches the pre-set pattern, the PCI-1753/1753E generates an interrupt signal to the system. “Change of State” interrupt function is provided at port B0. When any signal line of port B0 changes its state, the card generates an interrupt to the system to handle this event. These interrupt functions release the CPU from the burden of pulling all I/O points, enabling a PC to handle more I/O points with higher performance.

Cost Savings for Increasing the Number of Input/Output Lines

Industrial users are needing more and more digital I/O lines to transmit data or to monitor/control outside devices. To meet this trend and to satisfy user’s budget considerations, Advantech has developed an extension board for the PCI-1753 called the PCI-1753E. The PCI-1753E has almost the same structure as the PCI-1753, without the interface controller. It shares PCI-1753’s interface controller through a 10-cm flat cable connection, so users can spend less money while doubling the number of input/output lines.

Accessories for PCI-1753/1753E

The PCI-1753/1753E uses a 100-pin SCSI female connector. For easy signal wiring, a PCI-1753 can be connected to two ADAM-3968s by a 100-pin to 2×68-pin SCSI cable (part number PCL-10268). The ADAM-3968 allows easy access for wiring the individual pins of a 68-pin SCSI connector. An ADAM-3968/50 adapter board converts the 68-pin connector to two opto-22 compatible 50-pin box headers for connecting the PCI-1753/1753E to daughterboards, such as PCLD-782B and PCLD-785B.

Applications

• Industrial AC/DC I/O devices for monitoring and co
• Relay and switch monitoring and controlling
• Parallel data transfer
• TTL, DTL and CMOS logic signal sensing
• Indicator LED driving

SPECIFICATIONS

• Power Consumption: – Typical : +5 V @ 400 mA; – Max. : +5 V @ 0.7 A
• Storage temperature: -20 ~ 70?C (-4 ~ 158?F) (refer to IEC 68-2-3)
• Connector: One 100-pin SCSI female connector
• I/O Channels: 96 digital I/O lines for only PCI-1753; 192 digital I/O lines by extending to PCI-1753E
• Input Signal: – Logic level 0: 0.8 V max.; – Logic level 1: 2.0 V min.
• Transfer Rate: 1.6 Mbytes/sec (tested under DOS, K6 300 MHz CPU)
• Operating temperature: 0 ~ 60?C (32 ~ 140?F) (refer to IEC 68-2-1, 2)
• Operating humidity: 5 ~ 95%RH non-condensing
• Dimensions: 175 mm (L) x 100 mm (H) (6.9" x 3.9")
• Programming Mode: 8255 PPI mode 0
• Output Signal: – Logic level 0: 0.44 V max. @ 24 mA (sink); – Logic level 1: 3.76 V min. @ 24 mA (source)