ALLEN BRADLEY 1747-L551 PLC Processor

D–2 Control Networks
Each 1747-SN Scanner supports 4 logical racks of 256 I/O each per
logical rack. If large amounts of data needs to be transferred to a
device such as a PanelView Operator Interface, the 1747-SN Series
B Scanner supports block transfer of up to 64 words of data. Up to
16 devices can be connected to a single remote I/O network. The
SLC system supports multiple 1747-SN scanners if more devices are
required to be controller by a single SLC processor.
Remote I/O Passthru
Remote I/O passthru allows you to communicate between a personal
computer on the DH+ network to devices on the Remote I/O
Network. For example, a personal computer running PanelBuilder
Software and communicating on the DH+ network could upload and
download applications from a PanelView Operator Terminal
communicating on the Remote I/O network. This feature eliminates
the need to physically connect the personal computer to the
PanelView Operator Terminal when you need to change the
application. This option is available on the SLC 5/04 processor, the
1747-SN Series B Scanner, and the PLC-5 processor.
PC running
PanelView Software
SLC 5/04
SLC 5/02
1747–SN Series B
DH+ Network
1771–Remote I/O Network
PanelView
Operator Terminal
Block I/O
1747–DCM
Note:
The SLC 5/03 OS302 or later, SLC 5/04 OS401 or later, and SLC 5/05 also support remote
I/O passthru via both their communication ports.
Publication 1747-6.2