Generic ASCII Serial Communications Module

MVI71-GSC

The MVI71 Generic ASCII Serial Interface Module is a fast and easy way to add two fully configurable ASCII communication ports to the PLC platform without consuming the front port of the processor.

Features and Benefits

The MVI71-GSC module is a single slot, backplane compatible solution for the Rockwell Automation PLC platform. This module has two powerful and fully configurable ASCII communication ports, each supporting the sending and receiving of large ASCII character strings. With the implementation of some supporting ladder logic in the processor, the many different devices supporting ASCII communications can be integrated into the PLC platform.

General Specifications

• Single Slot - 1771 backplane compatible
• The module is recognized as an Input/Output module and has access to processor memory for data transfer between processor and module
• Ladder Logic is used for data transfer between module and processor.
• Configuration data obtained through user-defined ladder. Sample ladder file included

Applications

The MVI71-GSC module is the ideal solution for the many applications where ASCII character communications must be added to the PLC platform. The MVI71-GSC module can be found in many industrial sectors generally involving the following applications:

• Bar code scanner interfaces
• Weigh scale interfaces
• Legacy ASCII protocol connections
• Terminal port emulation
• Printer driver (alarm/status printer)

Functional Specifications

• ASCII Communication ports 1 & 2 (PRT1, PRT2)
  • Both ports are capable of transmitting and/or receiving ASCII character strings. Each port is individually configurable:
• Termination types: Stream mode, Termination character(s), Message timeout, Intercharacter timeout and/or Packet size limit
  • Baud rate: 110 to 115.2K baud
  • Parity: none, even, odd
  • Stop bits: 1 or 2
  • Data bits: 5 to 8
  • RTS on/off timing: 0 to 65535 ms
  • Minimum response delay: 0 to 65535 ms
• Handshaking (optional)
  • Hardware: RTS/CTS, DTR/DSR
  • Software: XON/XOFF
• Receive ASCII character strings up to 4096 characters in length
• Full hardware handshaking control provides radio, modem and Multidrop support
• Module error and status conditions returned to processor for diagnostic purposes
  • Module status
  • Port error status word (bit mapped)
  • Port receive state
  • Port receive character count
  • Port receive block count
  • Port transmit state
  • Port transmit character count
  • Port transmit block count

Hardware Specifications

Ordering Information

Distributors:
Place your order by email to orders@prosoft-technology.com:, fax to +1 661-716-5101.

Sales and Support: