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PLC-5 Processors
| PLC-5 Processors Overview |  |
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PLC-5 Processors | |
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Standard PLC-5 Processors
- Total I/O, Max. is the actual I/O circuits, regardless of the number of connection points or I/O image bits. The number of I/O image bits (8, 16, or 32) that correspond to an I/O module limit the number of I/O at that module; however, some modules may have less I/O than I/O image bits. This includes local I/O, extended local I/O, and Universal Remote I/O combined. This does not include DeviceNet I/O.
Any mix means that any number of the I/O can be inputs and any number can be outputs, with no placement restrictions.
Complementary means that to configure this many I/O, pairs of modules must have duplicate addresses. This pair must be either 2 output modules sharing the same output image bits or an input module and an output module complementing each other. In either case, module placement must conform to these restrictions.
- I/O rack is an I/O addressing unit that can contain a max. of 128 I/O with unique addressing of I/O modules or 256 I/O with duplicate addressing of I/O modules.
| Cat. No. | Processor | User Memory Words, Max.¬ | Memory Types | Total I/O, Max. | Analog I/O, Max. | I/O Scan Time per Rack§ |
| Standard PLC-5 Processors | ||||||
| 1785-L11B | PLC-5/11 | 8K | •Battery-backed static RAM •EEPROM program backup option using: 1785-ME16, -ME32, -ME64, and -M100 |
•512 (any mix) or •384 in + 384 out (complementary) |
512 | •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| 1785-L20B | PLC-5/20 | 16K | •Battery-backed static RAM •EEPROM program backup option using: 1785-ME16, -ME32, -ME64, and -M100 |
•512 (any mix) or •512 in + 512 out (complementary) |
512 | •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| 1785-L30B | PLC-5/30 | 32K | •Battery-backed static RAM •EEPROM program backup option using: 1785-ME16, -ME32, -ME64, and -M100 |
•1024 (any mix) or •1024 in and 1024 out (complementary) |
1024 | •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| 1785-L40B | PLC-5/40 | 48KT | •Battery-backed static RAM •EEPROM program backup option using: 1785-ME16, -ME32, -ME64, and -M100 |
•2048 (any mix) or •2048 in + 2048 out (complementary) |
2048 | •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| 1785-L40L | PLC-5/40L | 48KT | •Battery-backed static RAM •EEPROM program backup option using: 1785-ME16, -ME32, -ME64, and -M100 |
•2048 (any mix) or •2048 in + 2048 out (complementary) |
2048 | •0.5 ms (ext. local) •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| 1785-L60B | PLC-5/60 | 64K‡ | •Battery-backed static RAM •EEPROM program backup option using: 1785-ME16, -ME32, -ME64, and -M100 |
•3072 (any mix) or •3072 in + 3072 out (complementary) |
3072 | •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| 1785-L60L | PLC-5/60L | 64K‡ | •Battery-backed static RAM •EEPROM program backup option using: 1785-ME16, -ME32, -ME64, and -M100 |
•3072 (any mix) or •3072 in + 3072 out (complementary) |
3072 | •0.5 ms (ext. local) •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| 1785-L80B | PLC-5/80 | 100K§ | •Battery-backed static RAM •EEPROM program backup option using: 1785-ME16, -ME32, -ME64, and -M100 |
•3072 (any mix) or •3072 in + 3072 out (complementary) |
3072 | •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| Standard PLC-5 Processors with Protected Memories | ||||||
| 1785-L26B | PLC-5/26 | 16K | •Battery-backed static RAM •EEPROM program backup option using: 1785-ME16, -ME32, -ME64, and -M100 •Protected |
•512 (any mix) or •512 in + 512 out (complementary) |
512 | •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| 1785-L46B | PLC-5/46 | 48KT | •Battery-backed static RAM •EEPROM program backup option using: 1785-ME16, -ME32, -ME64, and -M100 •Protected |
•2048 (any mix) or •2048 in + 2048 out (complementary) |
2048 | •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| 1785-L86B | PLC-5/86 | 100K§ | •Battery-backed static RAM •EEPROM program backup option using: 1785-ME16, -ME32, -ME64, and -M100 •Protected |
•3072 (any mix) or •3072 in + 3072 out (complementary) |
3072 | •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| ¬ Max. number of data table words and max. number of timers and counters are user-configured. T Limit of 32K words per data table file. ‡ Limit of 32K words per data table file and 56K words per program file. § Limit of 32K words per data table file and a total data table size of 64K words. Limit of 56K words per program file. § In a single chassis, extended-local or remote. For Universal Remote I/O unless otherwise specified. |
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Standard PLC-5 Processors (continued)
| Cat. No. | Processor | Universal Remote / Extended Local-I/O / DH+ Ports (Mode) | Number of I/O Chassis, Max. | RS-232-C / 422-A / 423-A PortsT | Backplane Current Load @ 5V | ||
| Total | Extended Local | Universal Remote¬ | |||||
| Standard PLC-5 Processors | |||||||
| 1785-L11B | PLC-5/11 | 1 DH+/Remote I/O (Adap or Scan) | 5 | 0 | 4 | 1 | 2.3 A |
| 1785-L20B | PLC-5/20 | 1 DH+ 1 DH+/Remote I/O (Adap or Scan) |
13 | 0 | 12 | 2.3 A | |
| 1785-L30B | PLC-5/30 | 2 DH+/Remote I/O (Adap or Scan) | 29 | 0 | 28 | 2.3 A | |
| 1785-L40B | PLC-5/40 | 4 DH+/Remote I/O (Adap or Scan) | 61 | 0 | 32 max. per I/O link | 3.3 A | |
| 1785-L40L | PLC-5/40L | 2 DH+/Remote I/O (Adap or Scan) 1 Extended Local I/O |
61 | 16 | 32 max. per I/O link | 3.3 A | |
| 1785-L60B | PLC-5/60 | 4 DH+/Remote I/O (Adap or Scan) | 93 | 0 | 32 max. per I/O link | 3.3 A | |
| 1785-L60L | PLC-5/60L | 2 DH+/Remote I/O (Adap or Scan) 1 Extended Local I/O |
81 | 16 | 32 max. per I/O link | 3.3 A | |
| 1785-L80B | PLC-5/80 | 4 DH+/Remote I/O (Adap or Scan) | 93 | 0 | 32 max. per I/O link | 3.3 A | |
| Standard PLC-5 Processors with Protected Memories | |||||||
| 1785-L26B | PLC-5/26 | 1 DH+ 1 DH+/Remote I/O (Adap or Scan) |
13 | 0 | 12 | 1 | 2.3 A |
| 1785-L46B | PLC-5/46 | 4 DH+/Remote I/O (Adap or Scan) | 61 | 0 | 32 max. per I/O link | 1 | 3.3 A |
| 1785-L86B | PLC-5/86 | 4 DH+/Remote I/O (Adap or Scan) | 93 | 0 | 32 max. per I/O link | 1 | 3.3 A |
| ¬ Universal Remote I/O Chassis — any device with a remote I/O adapter port compatible with the Allen-Bradley Universal Remote I/O link. This includes 1771 I/O chassis, 1791 I/O blocks, PanelView displays, RediPANEL displays, Dataliner displays, 1336 drives. T RS-422-A and RS-423-A both have a cable length limitation of 61 m (200 ft). |
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Ethernet and ControlNet PLC-5 Processors
- Total I/O, Max. is the actual I/O circuits, regardless of the number of connection points or I/O image bits. The number of I/O image bits (8, 16, or 32) that correspond to an I/O module limit the number of I/O at that module; however, some modules may have less I/O than I/O image bits. This includes local I/O, ControlNet I/O, and Universal Remote I/O combined. This does not include DeviceNet I/O.
Any mix means that any number of the I/O can be inputs and any number can be outputs, with no placement restrictions.
Complementary means that to configure this many I/O, pairs of modules must have duplicate addresses. This pair must be either 2 output modules sharing the same output image bits or an input module and an output module complementing each other. In either case, module placement must conform to these restrictions.
- I/O rack is an I/O addressing unit that can contain a max. of 128 I/O with unique addressing of I/O modules or 256 I/O with duplicate addressing of I/O modules.
| Cat. No. | Processor | User Memory Words, Max.¬ | Memory Types | Total I/O, Max. | Analog I/O, Max. | I/O Scan Time per Rack§ |
| Ethernet PLC-5 Processors | ||||||
| 1785-L20E | PLC-5/20E | 16K | •Battery-backed static RAM •EEPROM program backup option using 1785-ME16, -ME32, and -ME64 |
•512 (any mix) or •512 in + 512 out (complementary) |
512 | •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| 1785-L40E | PLC-5/40E | 48KT | •Battery-backed static RAM •EEPROM program backup option using 1785-ME16, -ME32, and -ME64 |
•2048 (any mix) or •2048 in + 2048 out (complementary) |
2048 | •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| 1785-L80E | PLC-5/80E | 100K‡ | •Battery-backed static RAM •EEPROM program backup option using 1785-ME16, -ME32, -ME64, -M100 |
•3072 (any mix) or •3072 in + 3072 out (complementary) |
3072 | •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| ControlNet PLC-5 Processors | ||||||
| 1785-L20C15 | PLC-5/20C | 16K | •Battery-backed static RAM •EEPROM program backup option using 1785-ME32, -ME64, and -M100 |
Forcible •512 (any mix) or •512 in + 512 out (complementary) Non-forcibleØ •32000 |
Forcible •512 Non- forcibleØ •32000 |
ControlNet I/O •0.5 ms (average)z Universal Remote I/O •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| 1785-L40C15 | PLC-5/40C | 48KT | •Battery-backed static RAM •EEPROM program backup option using 1785-ME32, -ME64, and -M100 |
Forcible •2048 (any mix) or •2048 in + 2048 out (complementary) Non-forcibleØ •48000 |
Forcible •2048 Non- forcibleØ •48000 |
ControlNet I/O •0.5 ms (average)z Universal Remote I/O •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| 1785-L80C15 | PLC-5/80C | 100K‡ | •Battery-backed static RAM •EEPROM program backup option using 1785-ME32, -ME64, and -M100 |
Forcible •3072 (any mix) or •3072 in + 2048 out (complementary) Non-forcibleØ •50176 |
Forcible •3072 Non- forcibleØ •50176 |
ControlNet I/O •0.5 ms (average)z Universal Remote I/O •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| ControlNet PLC-5 Processors with Protected Memories | ||||||
| 1785-L46C15 | PLC-5/46C | 48KT | •Battery-backed static RAM •EEPROM program backup option using 1785-ME32, -ME64, and -M100 •Protected |
Forcible •2048 (any mix) or •2048 in + 2048 out (complementary) Non-forcibleØ •48000 |
Forcible •2048 Non- forcibleØ •48000 |
ControlNet I/O •0.5 ms (average)z Universal Remote I/O •10 ms @ 57.6 kbit/s •7 ms @ 115.2 kbit/s •3 ms @ 230.4 kbit/s |
| ¬ Max. number of data table words and max. number of timers and counters are user-configured. T Limit of 32K words per data table file. ‡ Limit of 32K words per data table file and a total data table size of 64K words. Limit of 56K words per program file. § In a single non-local chassis. Ø Non forcible I/O is only available as ControlNet I/O. z With several I/O chassis connected to the processor across a ControlNet link, the average I/O scan time per I/O rack in a single chassis is 0.5 ms. However the min. time for a complete ControlNet I/O scan (network update time) is 2 ms. Therefore, with a single I/O chassis connected to the processor across a ControlNet link, the min. I/O scan time for that single I/O chassis is 2 ms. Even with several I/O chassis connected to the processor across a ControlNet link, the min. time for an individual I/O chassis to be updated is 2 ms. |
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Ethernet and ControlNet PLC-5 Processors (continued)
| Cat. No. | Processor | ControlNet / Ethernet / Remote / Extended Local-I/O / DH+ Ports (Mode) | Number of I/O Chassis, Max. | RS-232-C / 422-A / 423-A Ports§ | Backplane Current Load @ 5V | ||
| Total¬ | Extended Local | Universal RemoteT | |||||
| Ethernet PLC-5 Processors | |||||||
| 1785-L20E | PLC-5/20E | •1 Ethernet •1 DH+ •1 DH+/Remote I/O (Adap or Scan) |
13 | 0 | 12 | 1 | 3.6 A |
| 1785-L40E | PLC-5/40E | •1 Ethernet •2 DH+/Remote I/O (Adap or Scan) |
61 | 0 | 60 | 1 | 3.6 A |
| 1785-L80E | PLC-5/80E | •1 Ethernet •2 DH+/Remote I/O (Adap or Scan) |
65 | 0 | 64 | 1 | 3.6 A |
| ControlNet PLC-5 Processors | |||||||
| 1785-L20C15 | PLC-5/20C | •1 ControlNet (dual media) •1 DH+ •1 DH+/Remote I/O (Adap or Scan) |
77 | 0 | 12 | 1 | 2.7 A (typ) 3.0 A (max) |
| 1785-L40C15 | PLC-5/40C | •1 ControlNet (dual media) •2 DH+/Remote I/O (Adap or Scan) |
125 | 0 | 60 | 1 | 3.0 A |
| 1785-L80C15 | PLC-5/80C | •1 ControlNet (dual media) •2 DH+/Remote I/O (Adap or Scan) |
125 | 0 | 60 | 1 | 3.0 A |
| ControlNet PLC-5 Processor with Protected Memory | |||||||
| 1785-L46C15 | PLC-5/46C | •1 ControlNet (dual media) •2 DH+/Remote I/O (Adap or Scan) |
125 | 0 | 60 | 1 | 3.0 A |
| ¬ Limited by data-table size and how much data table you use for each chassis. T Universal Remote I/O Chassis — any device with a remote I/O adapter port compatible with the Allen-Bradley Universal Remote I/O link. This includes 1771 I/O chassis, 1791 I/O blocks, PanelView displays, RediPANEL displays, Dataliner displays, 1336 drives. ‡ The ControlNet I/O map table can contain up to 128 entries. Each map-table entry corresponds to one scheduled transfer of data. § RS-422-A and RS-423-A both have a cable length limitation of 61m (200 ft). |
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Memory Devices
| Cat. No. | Description | For this Product | Function | Memory Size |
| 1785-ME16 | EEPROM | Standard PLC-5 processors | Program backup | 16K words |
| 1785-ME32 | EEPROM | Standard PLC-5 processors | Program backup | 32K words |
| 1785-ME64 | EEPROM | Standard PLC-5 processors | Program backup | 64K words |
| 1785-M100 | EEPROM | Standard PLC-5 processors | Program backup | 100K words |