Rockwell-automation 1794-APBDPV1 FLEX I/O PROFIBUS Adapter User Manual Uživatelský manuál stáhnout pdf (Strana 72)

Publication 1794-UM064B-EN-P - May 2014

60 Communicate With Your Module

Read Word 0 Bit 11 (13) Ch 1 Counter Stored – This bit, when set (1), indicates a counter value is saved in store 1. This

bit is reset by StoreReset.

Bit 12 (14) Ch 0 Preset Reached (PR0) – When this bit is set (1), in all configuration modes, the counter 0

value equals the preset 0 value, either in a positive or negative direction. This bit is reset by

PresetReset0 and can only be set again after at least 1 more pulse.

Bit 13 (15) Ch 1 Preset Reached (PR1) – When this bit is set (1), in all configuration modes, the counter 1

value equals the preset 0 value, either in a positive or negative direction. This bit is reset by

PresetReset1 and can only be set again after at least 1 more pulse.

Bit 14 (16) Ch 0 Counter Inc/Dec – 0 = last pulse decreased counter value, 1 = last pulse increased

counter value

Bit 15 (17) Ch 1 Counter In/Dec – 0 = last pulse decreased counter value, 1 = last pulse increased counter

value

Read Word 1 Bits 00…15

(00…17)

Ch 0 Stored Counter – Saved counter value on channel 0.

Read Word 2 Bits 00…15

(00…17)

Ch 1 Stored Counter – Saved counter value on channel 1.

Read Word 3 Bits 00…15

(00…17)

Ch 0 Counter – Current value in counter 0.

Read Word 4 Bits 00…15

(00…17)

Ch 1 Counter – Current value in counter 1.

Read Word 5 Bits 00…15

(00…17)

Ch 0 Counter Readback – Counter word readback – last value written to write word 1.

Read Word 7 Bits 00…15

(00…17)

Ch 1 Counter Readback – Counter word readback – last value written to write word 2.

Read Word 8 Bits 00…15

(00…17)

Firmware Revision – identification of latest software version code.

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

Word Bit Definition

Write Word 0 0…15

(0…17)

Ch 0 Control – Control word for setting the function of Ch 0 Counter.

Bits 00…02 02 01 00 Ch 0 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 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 Ch 0 Counter Preset bit – A positive edge on this bit moves the value in Preset X to Counter X, independent of

Preset Enable.

NOTE: To use Preset as Reset, use a count value of 0000 in the Preset value word.

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

Word Bit Definition

1 2 ... 67 68 69 70 71 72 73 74 75 76 77 ... 152 153

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