INDUSTRIAL INDEXING SYSTEMS, INC. MOTION CONTROL SYSTEM, MSC-250
1.2
IB-11B012 USER'S GUIDE
SYSTEM FUNCTIONS
The MSC-250 servo controller can simultaneously and independently regulate two motion axes. Programming of the motion control is supplied by a separate computer program or by a pre-programmed PROM (Programmable Read-Only Memory). Once loaded, the program is stored in non-volatile memory in the controller. The controller uses two processors. One processor is labeled "Main Microprocessor" and the other is labeled "Axis Microprocessor" (refer to "Section 1.3 - Components"). These two processors communicate through two kilobytes of dual-port RAM (Random Access Memory) for maximum processing and communication speed. (Dual-port RAM is memory which is mapped in the same location on each processor and is simultaneously accessible by both processors.) The main microprocessor processes information from the operating program, communication ports, and I/O (Input/Output) modules. The axis microprocessor processes information from the feedback devices and sends commands to the drives.
NOTE All operating commands used by the MSC-250 servo controller are part of the Industrial Indexing Systems' Macroprogram command language. Refer to the separate Macroprogram Development System Instruction Book for detailed information on the actual commands and use of Macroprogram control.
1.2.1 AXIS CONTROL The MSC-250 can control one or two motion axes, providing precision position-loop control to each axis. The controller can provide indexing, positioning, cam following, and profiling control. It can also be used as a passive position sensing device. A third axis (referred to as a half axis) can only monitor information received from a master axis or controller or from the pseudo axis. It does not provide any control functions. Each full axis can be controlled directly from the Macroprogram or can act as a slave, referencing its motion from angles supplied over the two Master Angle Buses provided in the controller. The information on the angle bus can come from one of five sources: a. b. c. d. e.
MARCH 2003
A pseudo-axis (internal) provided by the controller A real axes Another controller with angle information supplied through the fiber optics receiver A master resolver with angle information supplied through the fiber optics receiver A master encoder with angle information supplied through the fiber optics receiver
DESCRIPTION 1 - 5
