Model | Ports | Type | Rate | Isolation | Bus platform | |
| 2, 4, 8 | RS232, RS422, RS485 or mixed | 1 MBaud | - | For StandardPCI, PXI/CompactPCI | |
| 2, 4, 8 | RS232, RS422, RS485 or mixed | 1 MBaud | Yes, with common ground | Für StandardPCI, PXI/CompactPCI | |
| 2, 4, 8 | RS232, RS422, RS485 or mixed | 1 MBaud | Yes, with separate grounds per port | Für StandardPCI, PXI/CompactPCI | |
| ME-9300 | 16 | RS232 | 1 MBaud | - | For StandardPCI |
| ME-9200 | 3 | 2x RS232, 1x LPT | 460,8 kBaud | - | For StandardPCI and low profile PCI |
Serial Interfaces from Meilhaus Electronic - RS232, RS422, RS485
Serial interfaces - standard models and special solutions
The ME-9000 is a very flexible standard serial interface board from Meilhaus Electronic. It has up to 8 highspeed ports. They can be RS232, RS422/RS485 or mixed. A very special and sophisticated feature is its opto-isolation: The ME-9000 is available without isolation (TTL ports), with standard opto-isolation (all lines/ports isolated with common ground, models "i") or with complete opto-isolation with separate grounds per port (models "p"). The ME-9000 is the ideal solution for POS/retail applications, as it has additional digital channels and a counter.
Applications of RS232, RS422 and RS485 interfaces
Classic application of serial RS232 interfaces RS232: Data transmission from PC to PC over short and longer distances (modem).
Special applications of serial interfaces: Retail, point-of-sales, point-of-information and identification/access systems. Retail and point-of-sales (POS) equipment are I/O and peripheral devices, that support the personnel at the point-of-sales (like barcode scanners, cash registers), whereas point-of information systems can be operated by any person for example with a touchscreen. Some examples: ATMs, ticket-vending machines, parking-ticket validators, ID/security systems, terminals in railway stations or airports, information terminals in museums.
In decentral, industrial remote I/O networks RS422 or RS485 based fieldbusses (PROFIBUS, MODbus) are used.
