Rockwell Automation 1785-L20C_L40C QUICK START CONTROLNET PLC-5 User Manual
Page 28
Processor Specifications
A–2
Publication 1785-10.7 – October 1997
PLC-5/20C
PLC-5/40C
PLC-5/60C
PLC-5/80C
Maximum User Memory Words
16K
48K
¬
100K
100K
®
Maximum
o
I/O
Any Mix
512
2048
3072
3072
Maximum
Total I/O
Complimentary
512 in and
512 out
2048 in and
2048 out
3072 in and
3072 out
3072 in and
3072 out
Program Scan Time
0.5 ms per K word (bit logic)
2 ms per K word (typical)
ControlNet I/O
®
Transmission Rate
5M bit/s
ControlNet I/O
Network Update Time (NUT)
2-100 ms (user selectable)
Number of ControlNet Ports
1 (redundant)
Maximum Number of Nodes per Link without a Repeater
48—with 250 m (approx. 820 ft) cable length
Maximum Number of Nodes per Link with Repeaters
107
Maximum Link Cable Length without a Repeater
1,000 m (approximately 3,280 ft)—with 2 nodes
500 m (approximately 1,640 ft)—with 32 nodes
250 m (approximately 820 ft)—with 48 nodes
Maximum DIF/DOF Size
1000 words in and 1000 words out
Maximum Link Cable Length with Repeaters
6,000 m (approximately 19,680 ft)—with 2 nodes
3,000 m (approximately 9,840 ft)—typical
Remote I/O
and DH+
Transmission Rate
57.6K bit/s
115.2K bit/s
230.4K bit/s
I/O Scan Time (Typical)
10 ms per rack @ 57.6K bit/s
7 ms per rack @ 115.2K bit/s
3 ms per rack @ 230K bit/s
Maximum Number of Remote I/O Racks
3
15
23
23
Maximum Number of Remote I/O Devices
12
60
92
92
Number of Ports Configurable for DH+ or Remote I/O
(Adapter or Scanner)
1
2
2
2
Number of Dedicated DH+ Ports
1
0
0
0
Number of Serial Ports
1
Number of Coprocessor Ports
1
Maximum Number of MCPs
16
¬
The PLC-5/40C processor has a limit of 32K words per data-table file.
The PLC-5/60C processor has a limit of 56K words per program file and 32 K words per data table file.
® The PLC-5/80C processor has a limit of 56K words per program file and 32 K words per data table file. The PLC-5/80C processor has 64K
words of total data table space.