Application Criteria
Original instructions
About us
Introduction
The Quantum PLC family offers various solutions for communication with external devices. Depending on the needs of the application the user may select software solutions (XMIT function block using a CPU Modbus port) or hardware solutions (ESI module or ASCII Basic module). The following information helps to find the appropriate solution for a given application.
Application Criteria
The chart below identifies typical applications and the recommended product for that solution. As always when looking at solving application problems, this information is provided as a guide only and not the only answer to application problem.
Application
Description
Recommended Solution
Printer Interface
Generate local reports with imbedded data from the controller or the ASCII module.
ESI Module, J892, or ASCIIBasic Module
Communicate to simple Device
Send control characters and receive data from measurement devices.
ESI Module, J892, or XMIT
Bar Code Interface
Send and receive data from bar code reader/scanner.
ESI Module or ASCII Basicmodule
Communicate to Device
Send control characters and receive data from measurement devices, leading zero's or leading spaces may be sent by the device.
ESI Module or J892
Controller to Controller Interfacing
Emulate manufacturers protocol which supports several sub functions. Protocol. Generation for sophisticated device protocol.
ASCII Basic Module
External Data Storage
Store data outside of the controller.
ESI Module or ASCII Basic module
Modbus Master and/or Modem Support
Generate full spectrum of Modbus master commands and/or support dial up modems with control characters.
XMIT Function block and controllers local Modbus port
Multiple RS-232 ports
Multiple ports to communicate with external devices are required
ESI Module or ASCII Basic module
RS-232 ports in Distributed I/O
External devices have to be connected to Distributed I/O
ESI Module or ASCII Basic module