124
Absolute Encoder Interface Board
Section 2-3
2-3-6
Absolute Encoder Input Specifications
Instructions
Relevant Flags and Bits
Bits for Absolute Encoder Interface Board in Slot 2
AR Flags
Encoder input
indicators
Function
Port 1
Port 2
IN1
IN2
Lit when input bit 0 is ON.
INC1
INC2
Lit when value input is incremented.
DEC1
DEC2
Lit when value input is decremented.
Instruction
Meaning
(@)CTBL(63)
Used to register target or range comparison tables or to start comparisons for previously registered
comparison tables.
(@)INI(61)
Used to start or stop comparison using registered comparison table or to change the PV of a high-
speed counter.
(@)PRV(62)
Used to read the PV or status of a high-speed counter.
(@)INT(89)
Used to perform mask all interrupts, such as input interrupts, interval timer interrupts, and high-speed
counter interrupts.
Word
Bits
Name
Function
IR 232
00 to 15
Port 1
PV word (rightmost four bits)
The PV of the absolute high-speed counter attached to
port 1 of the Absolute Encoder Interface Board is stored
as an 8-digit BCD after each cycle.
IR 233
00 to 15
PV word (leftmost four bits)
IR 234
00 to 15
Port 2
PV word (rightmost four bits)
IR 235
00 to 15
PV word (leftmost four bits)
IR 236 to
IR 243
00 to 15
Not used.
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Word
Bit
Name
Function
AR 05
00
Port 1
High-speed
Counter
Range
Comparison
Flags
ON when counter PV satisfies con-
ditions for comparison range 1
When using high-speed counter 1 in
range comparison mode, each bit
turns ON when the corresponding
condition is satisfied.
01
ON when counter PV satisfies con-
ditions for comparison range 2
02
ON when counter PV satisfies con-
ditions for comparison range 3
03
ON when counter PV satisfies con-
ditions for comparison range 4
04
ON when counter PV satisfies con-
ditions for comparison range 5
05
ON when counter PV satisfies con-
ditions for comparison range 6
06
ON when counter PV satisfies con-
ditions for comparison range 7
07
ON when counter PV satisfies con-
ditions for comparison range 8
08
High-speed
Counter
Comparison
Flag
Indicates status of comparison operation.
OFF: Stopped
ON: Comparing
