• Use the following tables to select the SLC processor that fits your application.
  
• Data table maximum words is user configured.
  
• Maximum timers/counters is restricted only by memory.
  

Cat. No.	User Memory, Max.	Number of I/O	Local Analog I/O, Max.	Program Scan Time/Kword	I/O Scan Time
SLC 5/01 Processor
1747-L511	1K instructions	960 absolute maximum (local)T	480	8 ms (typ)	2.6 ms (typ)
1747-L514	4K instructions
SLC 5/02 Processor
1747-L524	4K instructions	4096 in + 4096 out absolute maximumT	480	4.8 ms (typ)	1.6 ms (typ)
SLC 5/03 Processor¬
1747-L531	8K words total (4K words for data or prog.) (4K words for data only)	4096 in + 4096 out absolute maximumT	180	1 ms (typ)	0.225 ms (typ)
1747-L532	16K words total (12K words for data or prog.) (4K words for data only)	4096 in + 4096 out absolute maximumT ¢Ô	480
SLC 5/04 Processor
1747-L541	16K words total (12K words for data or prog.) (4K words for data only)	4096 in + 4096 out absolute maximumT ¢Ô	480	0.9 ms (typ)	0.225 ms (typ)
1747-L542	32K words total (28K words for data or prog.) (4K words for data only)	4096 in + 4096 out absolute maximumT ¢Ô
1747-L543	64K words total (60K words for data or prog.) (4K words for data only)	4096 in + 4096 out maximumT
SLC 5/05 Processor ¡×
1747-L551	16K words total (12K words for data or prog.) (4K words for data only)	4096 in + 4096 out absolute maximumT ¢Ô	480	0.9 ms (typ)	0.225 ms (typ)
1747-L552	32K words total (28K words for data or prog.) (4K words for data only)	4096 in + 4096 out absolute maximumT ¢Ô
1747-L553	64K words total (60K words for data or prog.) (4K words for data only)	4096 in + 4096 out maximum¢Ô
¬ Modbus slave protocol is embedded in the RTU-5/03 processors available from an Encompass partner. The Modbus slave protocol is supported on the RS-232 port (channel0). For information on the Encompass program visit: www.automation.rockwell.com/encompass/. T The absolute maximum number of I/O for these processors only reflects the I/O addressing capability. It does not take into account the amount of memory that may be required for a ladder-logic program to monitor and control the I/O. The practical ratio of memory per I/O is totally dependant upon your specific application. ¢Ô You cannot configure this number of I/O for these processors with local I/O only. To configure this number of I/O for these processors, you must add a 1747-SN Remote I/O Scanner module to configure I/O on a Universal Remote I/O link, add a 1747-SDN DeviceNet Scanner module to configure I/O on a DeviceNet network and/or add a 1747-SCNR ControlNet Scanner module to configure I/O on a ControlNet network. ¡× The 5/05 Series C processors can communicate to 100 Mbps and support increased Ethernet connections: 1747-L551=32 connections; 1747-L552=48 connections; 1747-L553=64 connections.

SLC Processors (continued)

Cat. No.	No. of Local I/O Chassis, Max.	No. of I/O Module Slots in the Local I/O Chassis, Max.	Communication Ports	Backup Memory	Battery-backed RAM	Backplane Current Load
SLC 5/01 Processor
1747-L511 1747-L514	3	30	DH-485T	EEPROM	Option	350 mA @ 5V dc 105 mA @ 24V dc
SLC 5/02 Processor
1747-L524	3¬	30	DH-485	EEPROM	Standard	350 mA @ 5V dc 105 mA @ 24V dc
SLC 5/03 Processor
1747-L531 1747-L532	3¬	30	DH-485 RS-232¢Ô	Flash	Standard	500 mA @ 5V dc 175 mA @ 24V dc
SLC 5/04 Processor
1747-L541 1747-L542 1747-L543	3¬	30	DH+ RS-232¡×	Flash	Standard	1.0A @ 5V dc 0 mA @ 24V dc¡×
SLC 5/05 Processor
1747-L551 1747-L552 1747-L553	3¬	30	Ethernet RS-232¡×	Flash	Standard	1.0A @ 5V dc 0 mA @ 24V dc
¬ With this processor, you can also install a 1747-SN Remote I/O Scanner module to configure I/O on a Universal Remote I/O link and/or add a 1747-SDN DeviceNet Scanner module to configure I/O on a DeviceNet network. You can configure 32 I/O chassis per Universal Remote I/O scanner using complementary I/O. If you don¡¯t use complementary I/O, you can configure 16 I/O chassis per Universal Remote I/O scanner. With the DeviceNet scanner, you can address a maximum of 63 DeviceNet devices over the DeviceNet network. T An SLC 5/01 processor can only receive messages and send reply messages to command messages sent from other nodes on the DH-485 network; it cannot initiate communication. ¢Ô The SLC 5/03 has an RS-232 port, which can also be configured for a DH-485 network, enabling the SLC-5/03 to connect to two DH-485 networks simultaneously. ¡× The SLC 5/04 and SLC 5/05 have an RS-232 port, which can also be configured for a DH-485 network. ¡× SLC 5/04 processors manufactured prior to April 2002 draw 200 mA @ 24V dc. Check the processor label to verify current draw.