Rockwell Automation 1794-ID2 U.MNL INCREMENTAL ENCODER - Manual (Page 71)

6–9 Input, Output and Configuration Files for Analog Modules when used with ControlNet
Publication 1794ĆUM015B-EN-P - May 2001
Definition
Bit Output
Word
Word 1 Channel 1 Control Word - Control word for setting the function of counter 1.
Bits 00-02 02 01 00 Mode Selection bits
0 0 0 Counting on positive (rising) edge of input signal A. (Up/dwn counting determined by B.)
0 0 1 Quadrature encoder X1
0 1 0 Quadrature encoder X2
0 1 1 Quadrature encoder X4
1 0 0 Counting up on the positive edge of input signal A, and down on positive edge of input signal B.
1 0 1 No count function.
1 1 0 No count function.
1 1 1 No count function.
Bit 03 Preset bit - A positive edge on this bit moves the value in Preset X to Counter X, independent of Preset Enable.
Bit 04 Preset Enable bit - When this bit is set (1), a positive edge on Z preloads Counter X = Preset X, independent of
Cal Enable.
Bit 05 Count Enable bit - When this is set (1), the pulse counter is counting.
Bits 06-08
(06 10)
Calibration Control bits - bits 06, 07 and 08
(06-10)
06 Enable bit - When this bit is set (1), the counter can be calibrated.
07 Direction bit - When this bit set (1), calibration is performed in a negative direction; when reset (0),
calibration is performed in a positive direction.
08 Reset bit - Calibration is acknowledged and a new calibration is enabled on a positive edge on this bit.
Bits 09-10 10 09 Gate Control bits
0 0 No gate function on input G
0 1 Counting only if G is high (active)
1 0 Counting only if G is low (inactive)
1 1 Calibration if G is high (active) and ???
Bits 11-12
(13-14)
12 11 Store Control bits - These bits will trigger a Store only if the channel Store status bit (L0 or L1) is
cleared (0).
0 0 Save the counter value on the positive edge of Z (if Store X = 0)
0 1 Save the counter value on the positive edge of G (if Store X = 0)
1 0 Save the counter value on the negative edge of G (if Store X = 0)
1 1 Save the counter value on the positive edge and negative edge of G (if Store X = 0)
Bit 13 Rollover bit - When set (1), the counter counts up to the preset and then restarts at 0. If this bit is reset (0) (not
rollover), the rollover preset value = FFFF (hex = 65535 (decimal).
Bit 14 Store Reset bit - A positive edge on this bit resets Store X in Signals.
Bit 15 Store Reset bit - A positive edge on this bit resets Preset Detected in Signals.
Word 2 Bits 00-15 Preset 0 - Value to load or compare with counter 0
Word 3 Bits 00-15 Preset 1 - Value to load or compare with counter 1