ProSoft Technology inRAx 3170-PDP, Руководство пользователя

Страница: 42 / 152

3170-PDP ♦ FLEX Platform How Communication Takes Place and I/O Image Table Mapping
FLEX I/O™ PROFIBUS Adapter
Page 42 of 152 ProSoft Technology, Inc.
August 23, 2007
3.3 Connection Status Word Definition
Description
V1 SCANport channel 1 valid data bit. When high (1), the Logic Status and Analog Feedback
values are valid and can be used. When low (0), the values should not be used.
ID1 SCANport channel 1 connected peripheral port ID number. This three bit field contains the
port number that channel 1 is connected to on the SCANport device. It should contain a
value between 1 and 7. If this field is 7, then the channel is not connected to the SCANport
device, or the SCANport device may not be powered.
V2 SCANport channel 2 valid data bit. When high (1), the Logic Status and Analog Feedback
values are valid and can be used. When low (0), the values should not be used.
ID2 SCANport channel 2 connected peripheral port ID number. This three bit field contains the
port number that channel 2 is connected to on the SCANport device. It should contain a
value between 1 and 7. If this field is 7, then the channel is not connected to the SCANport
device, or the SCANport device may not be powered.
3.4 Logic Status/Analog Feedback Definition
The Logic Status and Analog Feedback values are defined within the product
manuals of the connected SCANport device(s).
3.5 Connection Enable Word Definition
Connection Enable Channel 2 Connection Enable Channel 1
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit:
Not Used E2 Not Used E1
Description
E1 SCANport channel 1 enable bit. When set to 1, the module will attempt to connect to the
SCANport device. When reset to 0, the module stops communicating with the connected
SCANport device. This usually causes the device to fault.
E2 SCANport channel 2 enable bit. When set to 1, the module will attempt to connect to the
SCANport device. When reset to 0, the module stops communicating with the connected
SCANport device. This usually causes the device to fault.
3.6 Logic Command/Analog Reference Definition
The Logic Command and Analog Reference values are defined within the
product manuals of the connected SCANport device(s).
Each I/O module has default values associated with it. At default, each module
will generate inputs/status and expect outputs/configuration.