Specifications

IP 240 Direct Data Interchange with the IP 240
Fig. 11-2. Flowchart for ”Write Data to the IP 240” (Continued)
no
no
no
yes
Error detected?
Data not yet fetched from trans-
fer buffer?
ERR=1?
yes
DFRT=0?
1
Enable interrupts
Write job number for
”terminate data interchange”
End
Read status register
yes
no
DFRT=0?
Reset communication. Write job number 40
H
Job number for reading error
codes.
Read out data Read out error codes.
Read status register
yes
no
AFRT=0?
2
Read status register
Write job number 01
H
Only for the transfer of modified track data
in position decoding mode
You must return to the start of the data
interchange in order to transfer the next
batch of new data.
Position decoding and counting mode
Terminate data interchange by forwarding
1D
H
for channel 1 or 2D
H
for channel 2.
Positioning mode
Terminate data interchange by forwarding
40
H
for channel 1 and for channel 2.
3
Transfer
additional
data?
yes
EWA 4NEB 811 6120-02a 11-9