Allen-Bradley 1784-KTX Reference Manual page 53

Command Syntax
host_command
transaction_number
command_length
module_slot_address
logical_rack_address
bt_data_len
bt_write_data
1
This command queues a confirmation when the block transfer exchange is
completed, i.e., it has received a BT reply packet from the adapter, or when
the 4-second timer has expired. The confirmation looks like:
Host BT Write Confirmation
host_command
transaction_number
confirmation_status
confirmation_length
data
Allen-Bradley Parts
You can specify 0 - 63; if you specify 0, the adapter decides the data length.
Chapter 5
Issuing Block Transfer Commands
4
0 - 255
3 + 2 * number of data words
0 - 15
0 - 31
1
# of data words
1 - 64 words of data
4
0 - 255 (whatever host supplied)
(see Table 5.A)
0
N/A
5-3