ProSoft Technology MVI56-AFC - Manual (Page 204)

MVI56-AFC Backplane Communication MVI56-AFC ♦ ControlLogix Platform
User Manual Liquid and Gas Flow Computer
Page 204 of 316 ProSoft Technology, Inc.
February 25, 2011
Description
This block issues Meter Disable (28) or Meter Enable (29) signals to the meter
logic in the AFC. A signal is an instruction for the AFC to perform a function once.
Signals are latched in the AFC and remain pending until they are discharged.
The OFB data element must be loaded with the bits set to correspond to the
meters to be disabled or enabled. The AFC returns the data element with the
bitmap of the enabled meters.
To schedule a signal, the Processor should latch the appropriate bit in the output
signal word. To prevent the accidental reissuing of signals, the Processor should
clear to zero the output signal word immediately after writing it to the module.
Signals: Output Function Block OFB Signals: Input Function Block IFB
Element Attribute Element Attribute
0 Block ID - Function Code 0 Block ID - Function Code
1 Signal Bits
Bit # Meter Signal Bits
0 Disable/Enable Meter 1
1 Disable/Enable Meter 2
2 Disable/Enable Meter 3
3 Disable/Enable Meter 4
4 Disable/Enable Meter 5
5 Disable/Enable Meter 6
6 Disable/Enable Meter 7
7 Disable/Enable Meter 8
8 Disable/Enable Meter 9
9 Disable/Enable Meter 10
10 Disable/Enable Meter 11
11 Disable/Enable Meter 12
12 Disable/Enable Meter 13
13 Disable/Enable Meter 14
14 Disable/Enable Meter 15
15 Disable/Enable Meter 16
1 Bitmap of enabled meters
Special Notes

If bit 9 (V) of the block ID element of the Input Function Block is 0, this
indicates that the action was performed and event logged, or no action was
required.

If bit 9 (V) of the block ID element of the Input Function Block is 1, this
indicates that the event log is full - action was not performed.
Note: Refer to Function Block Structure (page 168) for information on Bit 8 and 9 settings.