BECKHOFF C1300 User Manual
Page 31
C1300 VME to II/O Interface Unit
Beckhoff II/O-System
Date : 18.12.95
Version : 2.01
Page 31 of 44
Funktion 10h: Transmit CDL-Configuration
The CDLs described above are split into parts, so that they can be transmitted
through the handshake channel 0. The information for a message should not be
split in this process. Transmission can be activated by function 10h
channel
length
function
(hex)
empty
argument
0
argument
1
argument
2
...
argument
n
call
nn
10
00
aa
bb
db1,0
dbn,19
channel
length
function
argument
0
argument
1
argument
2
comment
response
04
10
aa
00
o.k.
04
10
aa
01
CDL data error
(
e.g.: Pointer outside Data area
of DPRAM
)
04
10
aa
02
CDL overflow
aa
00 = start of CDL transfers
01 = further Descriptors of the same CDL
02 = last transmission of the same CDL
bb
signal state No. bb ( 0 - 7)
db1,0
desciptor 1, byte 0 of a CDL
...
...
dbn,19
desciptor n, byte 19 of a CDL
Transmissions of module addresses, control byte and pointer to data bytes are
established in Intel Notation ( lower Byte to lower address ).