The 83SR04 module is used for stored-program binary and analogcontrol tasks on the drive, group and unit control levels.

The 83SR04E-E module is used for stored-program binary and analogcontrol tasks on the drive, group and unit control levels.

The 83SR07 module is used for stored-program analog control of oneor two process variables. The module is provided with twocontinuous outputs for output of the correcting variables.