Bailey Infi90 Interface to the PI System

Bailey Infi90 Interface to the PI System

69
Appendix C:
User-defined Bit Mask for MSDD, DD and RCM Points
For the MSDD (multiple state device driver block, FC 129), DD (device driver block, FC
123) and the RCM (Remote Control Memory, FC 62) blocks, their exception reports consist of a two byte status word. The information contained in these status words are shown in the following tables:
Table 1: Multi-state Device Driver Exception
Name
Description
Bit
Decimal Value
Q
Quality
15 32768
ALM
Alarm
14 16384
SO
Status Override 8192
CO
Control Override 2048
M
Auto/Manual Mode 1024
TAG
Block is Tagged 512
V
Control Output 256
F1
Feedback State 1 7
128
F2
Feedback State 2 6
64
F3
Feedback State 3 5
32
F4
Feedback State 4 4
16
GS
Good State (two bits 12 (4+8)
RS
Requested State (two bits 3 (1+2)
Table 2: Device Driver Exception
Name
Description
Bit
Decimal Value
Q
Quality
15 32768
ALM
Alarm
14 16384
TAG
Block is Tagged 512
V
Control Output 256
F2
Feedback State 2 5
32
F1
Feedback State 1 4
16
FS
Feedback status quality 8
SO
Override
2 4

Appendix C User-defined Bit Mask for MSDD, DD, and RCM Points
70
Mode
Auto/Manual Mode (two bits 3 (1+2)
Table 3: Remote Switch (RCM) Exception
Name
Description
Bit
Decimal Value
Q
Quality
15 32768
ALM
Alarm
14 16384
TAG
Block is Tagged 512
OV
Output Value 256
SI
Logic Set 64
SP
Set Permissive 32
RI
Logic Reset
4 16
OR
Override
3 8
FB
Feedback
2 4
SC
Set Command 2
RC
Reset Command 1
Table 4: Example MSDD to PI Tag State Translation
To get the entire status word for the Bailey block, define the PI tag with Location set to To get selected bits of the status word, use the bit mask option by setting Location to
27XXXXX where XXXXX is the sum of the decimal value corresponding to all the bits of interest. For example, Location is 2700176 fora PI point to store feedback state 1, 3 and 4 of a
MSDD, i.e. bit mask 176 = 128 + 32 + 16. The result of this tag is an eight state variable. The meaning of the states is given in the following table.
State
Meaning
0
All three FB states are 0 F on, F and F off
2
F3 on, F and F off
3
F3 and F on, F off
4
F1 on, F and F off
5
F1 and F on, F off
6
F1 and F on, F off
7
All three FB states are on.
Note that the interface compresses the bits selected by the bit mask to produce the final PI value. The compacting is done in the order of the bit position. In this example, bit 4
(FB4) get shifted to bit 0 of the final value bit 5 (FB3) is shifted to bit 1; bit 7 (FB1) is shifted to bit 2 of the final value.

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71
If the PI point to hold the above values is to be a Digital point, the user first needs to create a digital state set with 8 states. Then, the user specifies this digital state set as the state set for the digital point.

Bailey Infi90 Interface to the PI System

73
Revision History
Date
Author
Comments
08/07/96
PKIM
Revision of original VAX-based documentation
23-Sep-96
JFZ
Included more installation information
13-Dec-96
MMG
Add NT service information
01-Oct-98
LFM
Remove figures in hardware configuration. Refer to Bailey document instead.
14-Dec-98
LFM
Remove hardware configuration figure from
TOC. Minor modification in parameter description.
25-Feb-99
JK
Added in parameter description for event counters for NT
22-Jun-99
JK
Fixed typo in Station Status section should be PI not PI 10-Sep-99
JK
More info on how to configure digital states for Module Status tags (point type 14)
20-Nov-00
AKF
Updated formatting, introduction section and minor edits
30-Oct-02
CG
Clarified the meaning of NT to include WK &
XP; fixed headers & footers & TOC.
19-Sep-06
Janelle
NT and UNIX version 1.6 to 1.8; VMS version
2.1.2 Rev A Updated Supported Features table to include APS Connector fixed headers and footers updated How to Contact Us page
27-Nov-06
PRowe
Version 1.8, Rev B Updated manual to Skeleton v, applied template and spellchecked document. Requires much additional work.
9-Mar-07
E Tam
Version 1.8.2.0 (updated from Version 1.8 Rev
B)
04-Jan-08
Janelle
Version 1.8.2.0, Revision A updated hardware diagram, fixed headers, added serial information to supported features table, added ICU screenshots and description in Startup Command File section made final
9-Jan-08
E Tam
Version 1.8.2.0, Revision B minor corrections