Rockwell Automation 1785-Vx0B, D17856.5.9 PLC-5 VME VMEbus Programmable Controllers User Manual User Manual
Page 49
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.