PCI-1474U
PCI-1474U is a general-purpose communication card, intended for PCI (3.3V or 5V) or PCI-X bus. The card provides four non-isolated RS-422/485 ports.
The PCI-1474U card is based on the Oxford Semiconductor controller OXmPCI954 that provides PCI bus interface, four efficient UARTs (16C950 standard) and parallel interface in one circuit.
The first two ports at the PCI-1474U card lead to the D-Sub 9 connectors located on the card mounting bracket, the other two ports are accessible via the expansion card PCI-1029, fitted with the interface circuits located in the next slot.
Ports are not isolated, see PCI-1484U card if you need isolated ports.
Like any other TEDIA products, the RS-422/485 output circuits provide surge protection (TVS diodes) and termination impedances with fail-safe bias resistors, as advised by many standards (e.g. Profibus).
Useful feature are LED indicators on the card mounting bracket (a pair for every port) providing a comfortable check of the line activity.
Delivery details
The product packet includes the PCI card and expansion card, all documentation and software are available in the Download section.
Specifications
| Type | PCI-1474U |
|---|---|
| Number of ports | 4 |
| Ports type | RS-422/485 |
| Communication controller | OXmPCI954 (Oxford Semiconductor) |
| Transfer rate | up to 921.6kBd |
| Supported signals | RS-422: TXD+ (B), TXD- (A), RXD+ (B), RXD- (A)
RS-485: TXD/RXD+ (B), TXD/RXD- (A) |
| Transceiver type | SN75176 (Texas Instruments) |
| RS-422/485 operating modes | RS-422, RS-422 multimaster, RS-485 |
| RS-422/485 flow control | automatic (ADFC), DTR |
| RS-422/485 ESD surge protection |
300A, 8/20 µs, IEC 801-5 (TVS diodes 5V8/600W) |
| Isolation voltage | no isolation |
| RS-422/485 termination impedance |
120Ω/0.7V |
| Bus type | PCI, 3V3/5V, 32-bit, 33MHz (64-bit PCI and PCI-X compatible) |
| I/O and MEM address, Interrupt channels |
assigned by PnP PCI BIOS |
| Dimensions | approx. 90x125 mm (PCI-1474U) approx. 80x65 mm (PCI-1029) |
| Weight (expansion card included) |
approx. 140 g |
| Weight and dimensions of product packaging |
approx. 200 g cardboard box approx. 180x130x40 mm |