Rockwell Automation 1785-LTx,D17856.2.1 Classic PLC-5 Programmable Controllers Users Manual - Manual (Page 104)

Transferring Discrete and BlockĆTransfer Data
Chapter 8
8-9
Table 8.M
Addressing Tips for Adapter/Supervisor Block Transfers with a PLCĆ5/12,
Ć5/15, or Ć5/25 AdapterĆMode Processor
BTR/BTW Parameter BTR/BTW in Supervisor BTR/BTW in Adapter
Rack PLCĆ2/30: 1Ć7 octal
PLCĆ3: 0Ć77 octal
PLCĆ5/25: 1Ć7 octal
Must be 3 1
Group 0 Must be 0
Module 0
Length Must be 0 Number of words transferred
Continuous Yes (PLCĆ5 and PLCĆ5/250 only) Yes
1 If you need rack 3 I/O for the adapterĆmode processor's local I/O, then you must specify an
adapter image file and block transfers can not be used between the supervisory and
adapterĆmode processor.
ATTENTION: To guarantee the correct destination of
block-transfer data, program only one set of bidirectional block
transfers between supervisory and adapter-mode processors
with PLC-5/12, -5/15, and -5/25 processors in adapter mode.
Important: If you are using a PLC-5/12, -5/15, or -5/25 processor, set the
supervisory processor’s communication rate for remote I/O to 57.6 kbps.
Block transfers between adapter and supervisory processors transfer data
between data table addresses. If you want to transfer processor-resident
local I/O data of the adapter mode processor to a supervisory processor or
if you want to transfer data from the supervisory processor to processor-
resident local I/O of the adapter mode processor, you must use MOV or
COP instructions within the adapter-mode processor to move the data in or
out of the data file used in the adapter block-transfer instruction.
Figure 8.5 shows data transfers from a supervisory processor to a
PLC-5/12, -5/15, or -5/25 adapter-mode processor to a local block-transfer
module and vice versa.