| 摘要 |
In a processing system having a central processing unit and a plurality of modules units for receiving signals from encoder/sensor units, an encoder interface module can count the pulses in an incoming signal train. The encoder interface module has a plurality of registers and a compare unit for the generation of flags when the number of counted pulses has a predetermined relationship with numeric values stored in the registers. The encoder interface unit has apparatus for exchanging signal groups with an inter-module network. The inter-module network permits signal groups to be exchanged between interface modules without intervention of the central processing unit. The exchanged signal groups can coordinate the activity of the encoder modules.
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