B885–002 ASCII / BASIC, Overview
(Original Document)
Overview
The B885-002 ASCII / BASIC module runs user-written BASIC programs independently of the controller’s memory logic and scan. It also performs READ and WRITE commands to and from serial devices connected to either of the module’s two RS 232/422 ports (jumper selectable). In addition, its real-time clock/calendar allows the module to run a BASIC program or flag and return a value to the PLC at a user specified date and time.
The module provides report generation, interactive operator interface, high level math, peripheral communication and data storage.
Using a dumb terminal or an IBM personal computer with Emulator Software (Part #  SW-E885-1DA), you program the module’s 53K of user memory. If you need more memory, you may provide an additional 32K of user EPROM. You can designate part of the memory as retentive variable memory to store formulas or other process parameters.