SofTPLC V Allen Bradley Comparison

SoftPLC is a control technology that:

  1. Runs a superset of the PLC-5 ladder logic instruction set
  2. Has the same data table data types and addressing as a PLC-5
  3. Includes the same communication protocols as a PLC-5

Typically, users do not notice differences between SoftPLC and the A-B PLC from programming through troubleshooting. Operator interfaces,Scada and other products see SoftPLC on the network as a PLC-5, thus the same drivers can be used.

SoftPLC is more than an Allen Bradley clone however, SoftPLC has been referred to as a PLC-5 on steroids. SoftPLC started with the base functionality of the A-B PLC's and built upon this base by adding powerful features, tremendous capacity and blazing fast performance, as well as using an open architecture approach to PLC control. This means SoftPLC is multi-vendor capable and user-configurable ( write your own custom ladder instructions in c/c++ or Java )

 

SoftPLC

SLC-500(5/03 up)

PLC-5

ControlLogix

CPU FEATURES

Standard Instruction Set

PLC-5 plus SLC-500 ladder instructions, specialty functions (eg: Log Data, Send Email) custom instructions.

SLC-500 instructions

PLC-5 instructions, SFC, structured text

ladder, motion instructions, function block diagram

User Logic Memory

16MB to 768MB

8K to 64K

8K to 100K

64K to 7.5MB

Other Memory

8MB to 72MB Flash

EEprom 1K to 64K

EEprom 8K to 100K

N/A

Standard Communication Ports

EthNet(10 or 10/100),2 serial

serial (5/03), serial + DH+(5/04), serial + EthNet(10MB)(5/05)

serial,DH+ to (4) DH+/RIO

serial

Supported Communications Networks

DF1, DH+, DH, Ethernet

DF1,DH+,Ethernet, ControlNet

DF1,DH+,Ethernet, ControlNet

DF1,DH+,Ethernet, ControlNet

Supported I/O Networks

Tealware local/remote, Profibus, DeviceNet, Interbus, A-B RIO, GE90/30 and many others

SLC-500 local, A-B RIO,DeviceNet, ControlNet

PLC-5 local, A-B RIO,DeviceNet, ControlNet

Logix local, ControlNet,DeviceNet, A-B RIO, Enet/IP

I/O Capacity

16,384+ digital and up to 1 million analog

84 to 4,096

512 thru 3,072

128,000 digital or 4,000 analog

Web Server

Software Option

N/A

N/A

N/A