Technical data

46 Rockwell Automation Publication 1769-TD005I-EN-P - August 2014
CompactLogix Controllers Specifications
1769-L3x Local I/O Performance
You can configure an individual RPI for each local 1769 Compact I/O module. The RPI defines the frequency at which
the controller sends and receives all I/O data on the backplane.
You can always select an RPI that is slower than listed previously. These considerations show how fast modules can be
scanned—not how fast an application can use the data. The RPI is asynchronous to the program scan. Other factors, such
as program execution duration, affect I/O throughput.
Type of Module Guideline
Digital and analog (any mix) • 1…4 modules can be scanned in 1 ms
• 5…30 modules can be scanned in 2 ms
• Some input modules have a fixed 8 ms filter, so selecting a faster RPI has no
effect
Specialty • Full-sized 1769-SDN modules add 2 ms per module
• 1769-HSC modules add 1 ms per module
• Full-sized 1769-ASCII modules add 1 ms per module
Table 32 - Technical Specifications - 1769 Modular CompactLogix Controllers
Attribute 1769-L31 1769-L32C 1769-L32E 1769-L35CR 1769-L35E
User memory 512 KB 750 KB 750 KB 1.5 MB 1.5 MB
Optional nonvolatile memory 1784-CF128
Number of I/O modules, max 16 16 16 30 30
Number of I/O banks, max 3
Number of expansion I/O modules, max 16 1769 modules 30 1769 modules
Replacement battery 1769-BA
Current draw @ 5V DC 330 mA 650 mA 660 mA 680 mA 660 mA
Current draw @ 24V DC 40 mA 40 mA 90 mA 40 mA 90 mA
Power dissipation 2.61 W4.21 W5.5 W 4.36 W5.5 W
Isolation voltage 30V (continuous), basic
insulation type
Type tested at 710V DC for
60 s; RS232 channel 0 to
system
No isolation between RS232
channel 1 and system
30V (continuous), basic
insulation type
Type tested at 710V DC for
60 s; RS232 to system,
ControlNet to system, RS232
to ControlNet, ControlNet
channel A to ControlNet
channel B
30V (continuous), basic
insulation type
Type tested at 710V DC
for 60 s; RS232 to
system, Ethernet to
system, RS232 to
Ethernet
30V (continuous), basic
insulation type
Type tested at 710V DC for
60 s; RS232 to system,
ControlNet to system, RS232
to ControlNet, ControlNet
channel A to ControlNet
channel B
30V (continuous), basic
insulation type
Type tested at 710V DC
for 60 s; RS232 to
system, Ethernet to
system, RS232 to
Ethernet
Communication ports CH0 - RS-232
DF1, DH-485, ASCII
Fully isolated
38.4 Kbps max
CH1 - RS-232
DF1, DH-485
Nonisolated
38.4 Kbps max
RS232
Fully isolated
38.4 Kbps max
ControlNet port
RS232
Fully isolated
38.4 Kbps max
EtherNet/IP port
10/100 BASE-T
RS232
Fully isolated
38.4 Kbps max
ControlNet port
RS232
Fully isolated
38.4 Kbps max
EtherNet/IP port
10/100 BASE-T
Serial cables 1756-CP3 or 1747-CP3, right angle connector to controller, straight to serial port, 3 m
Weight, approx 0.30 kg (0.66 lb) 0.32 kg (0.70 lb) 0.30 kg (0.66 lb) 0.32 kg (0.70 lb) 0.30 kg (0.66 lb)
Slot width 1
Module location DIN rail or panel mount