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3595 4C User Manual Part One Programming the 3595 4C Interface card
35952350 (CH03/AA)
3-7
3.3.1 Initialising the system
To initialise the system, the Host PC must set up:
•
The
INTERFACE CONTROL REGISTER
(Section 3.4.1, Page 3-9). This provides for:
— powering-up S-Net (where IMP devices are powered from the 4C Interface card) and indirectly
resetting the IMP devices,
— resetting the 4C Interface card,
— reprogramming the 4C Interface card in-situ,
— reading an error code.
•
The
REAL-TIME CALENDAR AND CLOCK
(Section 3.4.5, Page 3-11). Once this is done, the time is
transmitted to all IMP devices on the S-Net once every second. This maintains the time in all IMP
devices, accurate to within
±
1ms of the time in the 4C Interface card.
•
The
POLL TABLE
(Section 3.4.6, Page 3-12). In this table, a bit should be set for each IMP device
from which data is required. Alternatively, the Poll Table may be set later, when reception is required.
The 4C Interface card can now be used to command the IMP devices on S-Net and receive from them.
Sections 3.3.2 through 3.3.4 tell you how.
NOTE: Power-up Settling Delay
After power has been applied to the S-Net, the IMP devices take time to become operational.
For 50V at the IMP, this time could be up to 1 second, whereas for 10V, it is up to 3 seconds.
The voltages quoted are those actually at the IMP, not those applied to the S-Net at the
Controller. The times quoted apply to IMP devices other than the Universal IMP (UIMP): for
UIMP devices, the times should be doubled.
Setting poll bits before the power-up time has elapsed can result in poll errors being generated.
Therefore, it is necessary to delay setting up the Poll Table by a time slightly in excess of the
power-up time.
Summary of Contents for 3595 4C
Page 1: ...Precision measurement solutions 3595 4C PC to S Net Interface USER MANUAL 35952350...
Page 2: ...ii 35952350 2001 SOLARTRON MOBREY LIMITED...
Page 6: ...vi 35952350...
Page 7: ......
Page 8: ......
Page 10: ...1 ii 35952350...
Page 12: ...1 iv 35952350...
Page 48: ...Programming the 3595 4C Interface card 3595 4C User Manual Part One 3 20 35952350 CH03 AA...
Page 49: ...3595 4C PC to S Net Interface User Manual PART TWO IMP Commands and Responses...
Page 50: ...2 ii 35952350...
Page 52: ...2 iv 35952350...
Page 108: ...IMP Commands 3595 4C User Manual Part Two 1 56 35952350 CH01 AA...
Page 110: ...Results and Error Formats 3595 4C User Manual Part Two 2 2 35952350 CH02 AA...
Page 122: ...Database Structure 3595 1H and 1J IMP 3595 4C User Manual Part Two A 2 35952350 APPX A AA...
Page 126: ...Database Structure 3595 1H and 1J IMP 3595 4C User Manual Part Two A 6 35952350 APPX A AA...
Page 127: ......