Rockwell-automation 1794-APBDPV1 FLEX I/O PROFIBUS Adapter User Manual Bedienungsanleitung PDF herunterladen (Seite 73)

Publication 1794-UM064B-EN-P - May 2014

Communicate With Your Module 61

Write Word 1 Bit 04 Ch 0 Z Preset Enable bit – When this bit is set (1), a positive edge on Z preloads Counter X = Preset X, independent of

Cal Enable.

NOTE: If Z is configured to do Store and Preset (Reset), the Store will occur first.

Bit 05 Ch 0 Count Enable bit – When this is set (1), the incremental encoder is enabled.

Bits 06…08

(06…10)

Ch 0 Calibration Control bits – bits 06, 07 and 08.

06 Cal Enable bit – When set (1), the counter can be calibrated.

07 Cal Direction bit – When set (1), calibration is performed in a negative direction; when reset (0), calibration is

performed in a positive direction.

08 Ch 0 Cal Reset bit – Calibration is acknowledged and a new calibration is enabled on a positive edge on this bit.

Bits 09…10

(11…12)

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 The counter can be calibrated when G is high (active).

Bits 11…12

(13…14)

12 11 Store Control bits

Save the counter value on positive edge of Z (if Stored X = 0).

Save the counter value on positive edge of G (if Stored X = 0).

Save the counter value on negative edge of G (if Stored X = 0).

Save the counter value on positive and negative edges of G (if Stored X = 0).

Bit 13 (15) Ch 0 Rollover bit – When set (1), the counter counts up to the prset and then restarts at 0. If this bit is reset (0) (not

rollover), the rollover preset value = FFFF (hex = 65536 (decimal).

Bit 14 (16) Ch 0 Store Reset bit – A positive edge on this bit resets Stored X in Signals.

Bit 15 (17) Ch 0 Preset Reset bit – A positive edge on this bit resets Preset Detected in Signals.

Write Word 2 Ch 1 Control – Control word for setting the fuction of Ch 1 Counter.

Bits 00…02 Bit 02 01 00 Ch 1 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.

1794-ID2 Pulse Counter Module Word/Bit Definitions for Block Transfer Read Words

Word Bit Definition

1 2 ... 68 69 70 71 72 73 74 75 76 77 78 ... 152 153

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