Rockwell Automation 1785-Vx0B, D17856.5.9 PLC-5 VME VMEbus Programmable Controllers User Manual User Manual

Page 49

Advertising
background image

Chapter 4

Ladder-Program Interfaces

4-2

Table 4.A
Four Ladder Messages

Message

ASCII Syntax

Page

Copy to VME

CTV #

X

f

:

e

vmeaddr

width

numelts

4-3

Copy from VME

CFV

vmeaddr

width

#

X

f

:

e

numelts

4-4

Send VME interrupt

SVI

vmeint

statid

4-5

Check VME status file

CSF

4-5

where:

X

is the file type.

File Type

Words per Element

counter

C

3

floating point

F

2

input

I

1

integer

N

1

output

O

1

control

R

3

status

S

1

timer

T

3

ASCII

A

1

BCD

D

1

f

is the file number—0 is the output image; 1 is the input
image; 2 is the status file; and 3-999 are any type except
input, output, and status files.

If the

X

file type is I, O, or S, the

f

parameter is optional.

e

is the element number—0-192 octal for I/O files, 0-127
decimal for the status file, 0-999 decimal for all other files.

vmeaddr

is the A16 or A24 VME address. A 6-character hexadecimal
number denotes an A24 address, which generates a 3D
address modifier. A 4-character hexadecimal number denotes
an A16 address, which generates a 2D address modifier on
the VMEbus.

Advertising