External Routine (ER) libraries for Allen Bradley SoftLogix 5800 allow the addition of new instructions to the PLC’s standard instruction set. These instructions are used the same way as the built-in instructions, such as MOV or TON. This extensibility of the instruction set allows easy customization of the SoftLogix 5800 to suit any needs.
The Advanced Engineering extension to the SoftLogix 5800 allows PLC programmers to query any ODBC-compliant database. Configuration settings such as the Data Source Name, user name and password are specified for each Data Source that will be accessed.