Created Date: September 10,2007

Created by: milldrone

Darksabre,

Here is a program I wrote to test how many registers I could write to with the mwx instruction. It worked when I tried it over a year ago.

PLC 06

// Rung 1

// Address 0

#BEGIN COMMENT

" This is an example of a mwx comm to move all the registers from V1200 to V7377 to "

"another plc V1200 to V7377. This could be a 06 or an 05 as they both have the same "

"memory range. Note the last MWX has only 75 registers in it. All the other MWX's have "

"125 registers ( the 125 number is all the software would allow me to transfer in one "

"instruction). "

" "

" This rung is just for a visual display of comm progress via output leds "

#END

STR C0

OR C1

OUT Y0

// Rung 2

// Address 3

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C2

OR C3

OUT Y1

// Rung 3

// Address 6

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C4

OR C5

OUT Y2

// Rung 4

// Address 9

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C6

OR C7

OUT Y3

// Rung 5

// Address 12

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C10

OR C11

OUT Y4

// Rung 6

// Address 15

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C12

OR C13

OUT Y5

// Rung 7

// Address 18

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C14

OR C15

OUT Y6

// Rung 8

// Address 21

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C16

OR C17

OUT Y7

// Rung 9

// Address 24

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C20

OR C21

OR C40

OUT Y10

// Rung 10

// Address 28

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C22

OR C23

OR C41

OUT Y11

// Rung 11

// Address 32

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C24

OR C25

OR C42

OUT Y12

// Rung 12

// Address 36

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C26

OR C27

OR C43

OUT Y13

// Rung 13

// Address 40

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C30

OR C31

OR C44

OUT Y14

// Rung 14

// Address 44

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C32

OR C33

OR C45

OUT Y15

// Rung 15

// Address 48

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C34

OR C35

OR C46

OUT Y16

// Rung 16

// Address 52

#BEGIN COMMENT

" This rung is just for a visual display of comm progress via output leds "

#END

STR C36

OR C37

OR C47

OUT Y17

// Rung 17

// Address 56

#BEGIN COMMENT

" this is a shift register triggered by the comm port being busy to shift to the next bit "

#END

STRN SP1

STR SP116

STRN SP1

SR C0 C47

// Rung 18

// Address 61

#BEGIN COMMENT

" this is to reset the shift register and to limit the number of shifts so that they end with bit "

"C32. Otherwise the register would hang because the comm port wouldnt be busy. As the "

"last bit used for an MWX box is C31 "

#END

STR SP0

OR C32

SET C0

RST C47

// Rung 19

// Address 65

STRN SP116

AND C0

MWX K0 K0 K2 K2 K16 K40641 V1200 K125 K0 V400

// Rung 20

// Address 73

STRN SP116

AND C1

MWX K0 K0 K2 K2 K16 K40766 V1375 K125 K0 V400

// Rung 21

// Address 81

STRN SP116

AND C2

MWX K0 K0 K2 K2 K16 K40891 V1572 K125 K0 V400

// Rung 22

// Address 89

STRN SP116

AND C3

MWX K0 K0 K2 K2 K16 K41016 V1767 K125 K0 V400

// Rung 23

// Address 97

STRN SP116

AND C4

MWX K0 K0 K2 K2 K16 K41141 V2164 K125 K0 V400

// Rung 24

// Address 105

STRN SP116

AND C5

MWX K0 K0 K2 K2 K16 K41266 V2361 K125 K0 V400

// Rung 25

// Address 113

STRN SP116

AND C6

MWX K0 K0 K2 K2 K16 K41391 V2556 K125 K0 V400

// Rung 26

// Address 121

STRN SP116

AND C7

MWX K0 K0 K2 K2 K16 K41516 V2753 K125 K0 V400

// Rung 27

// Address 129

STRN SP116

AND C10

MWX K0 K0 K2 K2 K16 K41641 V3150 K125 K0 V400

// Rung 28

// Address 137

STRN SP116

AND C11

MWX K0 K0 K2 K2 K16 K41766 V3345 K125 K0 V400

// Rung 29

// Address 145

STRN SP116

AND C12

MWX K0 K0 K2 K2 K16 K41891 V3542 K125 K0 V400

// Rung 30

// Address 153

STRN SP116

AND C13

MWX K0 K0 K2 K2 K16 K42016 V3737 K125 K0 V400

// Rung 31

// Address 161

STRN SP116

AND C14

MWX K0 K0 K2 K2 K16 K42141 V4131 K125 K0 V400

// Rung 32

// Address 169

STRN SP116

AND C15

MWX K0 K0 K2 K2 K16 K42266 V4331 K125 K0 V400

// Rung 33

// Address 177

STRN SP116

AND C16

MWX K0 K0 K2 K2 K16 K42391 V4526 K125 K0 V400

// Rung 34

// Address 185

STRN SP116

AND C17

MWX K0 K0 K2 K2 K16 K42516 V4723 K125 K0 V400

// Rung 35

// Address 193

STRN SP116

AND C20

MWX K0 K0 K2 K2 K16 K42641 V5120 K125 K0 V400

// Rung 36

// Address 201

STRN SP116

AND C21

MWX K0 K0 K2 K2 K16 K42766 V5315 K125 K0 V400

// Rung 37

// Address 209

STRN SP116

AND C22

MWX K0 K0 K2 K2 K16 K42891 V5512 K125 K0 V400

// Rung 38

// Address 217

STRN SP116

AND C23

MWX K0 K0 K2 K2 K16 K43016 V5707 K125 K0 V400

// Rung 39

// Address 225

STRN SP116

AND C24

MWX K0 K0 K2 K2 K16 K43141 V6104 K125 K0 V400

// Rung 40

// Address 233

STRN SP116

AND C25

MWX K0 K0 K2 K2 K16 K43266 V6301 K125 K0 V400

// Rung 41

// Address 241

STRN SP116

AND C26

MWX K0 K0 K2 K2 K16 K43391 V6476 K125 K0 V400

// Rung 42

// Address 249

STRN SP116

AND C27

MWX K0 K0 K2 K2 K16 K43516 V6673 K125 K0 V400

// Rung 43

// Address 257

STRN SP116

AND C30

MWX K0 K0 K2 K2 K16 K43641 V7070 K125 K0 V400

// Rung 44

// Address 265

STRN SP116

AND C31

MWX K0 K0 K2 K2 K16 K43766 V7265 K75 K0 V400

// Rung 45

// Address 273

END

Created Date: September 10,2007

Created by: Darksabre

I'm having a little problem writing some modbus commands to a Delta VFD-B drive. I'm using a DL06 plc and the MRX and MWX commands to modbus it. As far as I can tell, you can read/write to the parameters starting at parameter 0000 by setting up the MRX/MWX block like this:

Port: K2

Slave Add: K1

Function Code: 03 or 16

Start Slave Memory Address: 40001

Number of Elem: 20

Modbus Data type: 584/984 Mode

Exception Buffer: V400

If I have it setup like this, I can successfully read or write to parameters 0000 through 0019 (20 elements). This is great...if I only want to access those parameters. Unfortunately there are a lot more parameters (all the way up to 0900) that I need to access. I can change my start slave address anywhere from 40001 to 40011, but if I set it beyond this, it wont read/write any values. Also, it only lets me read/write up to 20 elements. Again, anything past this and it fails to read/write values.

Does this sound familiar to anyone? Any suggestions or brainstorming would be much appreciated!