Rockwell Automation 1791-IOBB USER MANUAL - Manual (Page 12)

Chapter
3
3Ć1
Installing Block I/O
In this chapter you will learn how to mount the block, connect the remote
I/O link, connect the input and output wiring to the block, and terminate
the remote I/O link.
Before installation, you must determine:
the number of blocks desired
the total distance of the installation
transmission rate desired
if external fuses are required
Refer to Table 3.A for acceptable combinations.
Table 3.A
Acceptable Combinations of Processor and Block I/O
When using and Maximum Capacity
Baud Rate
Used
Maximum
Network Distance
PLC-2 family 16 blocks with 150 ohm terminator 57.6K 10,000 cable-feet
Any scanner module 28 blocks with 82 ohm terminator 57.6K 10,000 cable-feet
28 blocks with 82 ohm terminator 115.2K 5,000 cable-feet
PLC-3 family 16 blocks with 150 ohm terminator 57.6K 10,000 cable-feet
1775ĆS4A, ĆS4B, ĆS5, ĆSR
32 blocks with 82 ohm terminator 57.6K 10,000 cable-feet
1775 S4A, S4B, S5, SR
or ĆSR5 module
32 blocks with 82 ohm terminator 115.2K 5,000 cable-feet
32 blocks with 82 ohm terminator 230.4K 2,500 cable-feet
PLC-5 family 16 blocks with 150 ohm terminator 57.6K 10,000 cable-feet
Note: PLCĆ5250 requires a
32 blocks with 82 ohm terminator 57.6K 10,000 cable-feet
Note: PLC 5250 requires a
5150ĆRS remote scanner
32 blocks with 82 ohm terminator 115.2K 5,000 cable-feet
32 blocks with 82 ohm terminator 230.4K 2,500 cable-feet
TABLE CONTINUED ON NEXT PAGE
Chapter Objectives
Pre-installation
Considerations