Power PMAC Clipper User Manual
ACC-24S3 4-Channel Axis Expansion Stack Board
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J4: Machine Connector (JMACH2 Port)
This machine interface connector is labeled JMACH2 or J4 on the ACC-24S3 contains pins for four
channels of machine I/O: end-of-travel input flags, home flag and pulse-and-direction output signals. In
addition, the B_WDO output allows monitoring the state of the Watchdog safety feature. Use the same
hardware wiring setup as the base Power PMAC Clipper board. Use the same software setup as the base
Power PMAC Clipper board with the following differences:
Gate3 index is 1 (Clipper[1])
Limits and Flags [Axis 1- 4] Structure Elements
Either the user flags or other unassigned axis flags on the base board can be used as general-purpose I/O
providing up to 20 inputs and 4 outputs at 5-24Vdc levels. The indicated Structure Elements allow
accessing each particular line as shown below:
Clipper[1].Chan[0].AmpEna
; AENA1 output status
Clipper[1].Chan[0].UserFlag
; User 1 flag input status
Clipper[1].Chan[0].HomeFlag
; Home flag 1 input status
Clipper[1].Chan[0].PlusLimit
; Positive Limit 1 flag input status
Clipper[1].Chan[0].MinusLimit
; Negative Limit 1 flag input status
Clipper[1].Chan[1].AmpEna
; AENA2 output status
Clipper[1].Chan[1].UserFlag
; User 2 flag input status
Clipper[1].Chan[1].HomeFlag
; Home flag 2 input status
Clipper[1].Chan[1].PlusLimit
; Positive Limit 2 flag input status
Clipper[1].Chan[1].MinusLimit
; Negative Limit 2 flag input status
Clipper[1].Chan[2].AmpEna
; AENA3 output status
Clipper[1].Chan[2].UserFlag
; User 3 flag input status
Clipper[1].Chan[2].HomeFlag
; Home flag 3 input status
Clipper[1].Chan[2].PlusLimit
; Positive Limit 3 flag input status
Clipper[1].Chan[2].MinusLimit
; Negative Limit 3 flag input status
Clipper[1].Chan[3].AmpEna
; AENA4 output status
Clipper[1].Chan[3].UserFlag
; User 4 flag input status
Clipper[1].Chan[3].HomeFlag
; Home flag 4 input status
Clipper[1].Chan[3].PlusLimit
; Positive Limit 4 flag input status
Clipper[1].Chan[3].MinusLimit
; Negative Limit 4 flag input status
