Bailey Infi 90 Composor MSDVDR Instruction
PFA file. How the Block will work. Please explain
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Right clicking on the block should provide the FC documentation which will explain the functionality in full. The block properties also provide help on how to set the specification values correctly.
At its simplest, MSDVDR has 4 user defined 3 bit output masks (3 active states and 1 default set by S7, S8, S9 and S10) that can be selected by the operator (manual) or other logic (auto). On the input side there are 4 feedback inputs whose states must match the user defined feedback masks (S11, S12 and S13) for each output mask to avoid generating an alarm for the selected output state. Finally the control inputs S1 and S2 allow all 4 output states to be selected when in auto.
In your case
State 0 or the default output mask turns off block 1084. Output mask 0 is not accessible in manual but will probably be the output mask used on power up. There are no feedback masks for the default output mask.
State 1 output mask (S8) turns off block 1084 and feedback input F4 must be 1 to avoid generating an alarm and F1, F2 and F3 are don't care. Output mask 1 can only be set to output mask 3 when in Manual (S19).
State 2 output mask (S9) turns off block 1084 and feedback input F1 must be on, F2 and F3 must be off to avoid generating an alarm and F4 is a don't care . Output mask 2 does not have a next allowable output mask in Manual (S20) so is not used in manual.
State 3 output mask (S10) turns on block 1084 and feedback input F1 must be on, F2 and F3 must be off to avoid generating an alarm and F4 is a don't care. Output mask 3 can only be set to output mask 1 when in Manual (S21).
There is no feedback wait time configured (time allowed for feedback to match the feedback mask for the selected state).
Manual mode is allowed (S15) and the MSDVDR starts up in manual (S23) in output mask 0.
The outputs are latched or maintained (S22).
Auto mode is also allowed and there is external logic connected to S1 and S2.