Peripheral Devices
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8.15 GM DeviceNet
This device type is used to interface a PowerMACS station to an overriding control system according to
GM's specification the General Motors document "GAE Electric Nutrunner Controller Design Criteria",
GAEc-03 6-9-03Revision.doc. Using it the control system start and stop the tightening cycles and receive
result.
The device offers the following two interfaces:
ï‚· A special configuration of the standard DeviceNet fieldbus (the input and output maps are
predefined and fixed).
ï‚· A discrete I/O using digital signals.
By default the discrete I/O interface is mapped to PowerMACS local I/O system (see chapter: I/O) but is
also available in the PowerMACS PLC and can therefore be mapped to other kind of interfaces if so
wanted. See chapter: GM DeviceNet variables for a description of the PLC interface.
The device is configured using the following form:
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