Rockwell Automation 1794-APBDPV1 FLEX I/O PROFIBUS Adapter User Manual - Manual (Page 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