basic module (db/bas compatible)

mvi56-bas

this single-slot module is a powerful solution that allows the large installed base of legacy basic programs for the 1771-db and 1747-bas modules to be migrated to the controllogix platform with minimal effort.

the mvi56-bas module...

• allows the user to cr-eate basic programs to transfer data between the controllogix and the mvi56-bas module
• allows the user to cr-eate foreign device interface for specific applications and easily integrate the device with the controllogix processor
• interfaces to many devices that use ascii interface to a controllogix backplane such as modems, printers, bar code readers, and scales.
• acts as df1 full-duplex device or a df1 half-duplex slave
• saves controllogix processor memory by running math algorithms

features

the mvi56-bas module supports the basic-52 programming language, allowing the user to easily develop, edit, run, and debug basic programs.

the basic programs are stored in the mvi56-bas compact flash disk allowing the user to easily backup the basic programs to anither compact flash disk or to a local pc. up to 24065 bytes of ram memory are available.

the module contains three ports:

• dh-485: dh-485 communication or basic program transfer
• prt1: ascii communication or program port
• prt2: ascii communication or df1 communication

the user can either cr-eate the basic programs using the command line, then saving it compact flash, or cr-eate the program on a pc and download it to the mvi56-bas module. the user can also configure the module to execute a basic program automatically at power up.

applications

the mvi56-bas module is the ideal solution for the many applications where ascii character communications need to be added to the controllogix platform. examples involving the mvi56-bas module can be found in many industrial sectors generally involving the following applications:

• bar code scanner interfaces
• weigh scale interfaces
• legacy ascii protocol connections
• terminal port emulation
• printer driver (alarm/status printer)

functional specifications

general specifications

basic programming

• supports basic-52 programming language
• stores basic programs on compact falsh disk
• supports 24064 bytes of ram
• easy basic program backup

df1 communications

• prt2 can be enabled and configured for df1 communications through basic calls
• uses ladder logic to transferdata between the df1 device and the controllogix processor
• prt2 port can be configured to act as a full-duplex device or half-duplex slave.

the mvi56-bas can send the following df1 commands:

• plc-2 unprotected read command
• plc-2 unprotected write command
• plc-3 word range read command
• plc-3 word range write command
• plc-5 typed read command
• plc-5 typed write command

the mvi56-bas accepts the following commands:

• plc (word range writes)
• plc (typed writes)
• plc (unprotected write)
• slc 5/02 (unprotected write)
• slc 5/02 (typed writes)

dh-485 communications

• the mvi56-bas dh-485 port can be used to interface the controllogix processor with fh-485 devices
• an allen-bradley aic+ device is required (user-supplied)
• ladder logic is required to transfer data between the controllogix processor and remote slc dh-485 data file or common interface file

hardware specifications

• form factor:- single slot - 1756 chassis compatible- local or remote rack
• backplane current load: 800 ma @ 5 v
• operating temperature: 0 to 60 deg c (32 to 140 deg f)
• storage temperature: -40 to 85 deg c (-40 to 185 deg f)
• shock:- 30g operational- 50g non-operational
• vibration: 5 g from 10 - 150 hz
• relative humidity: 5-95% (w/o condensation)
• led indicators:- module status- backplane transfer status- application status- serial activity and error led status
• configuration serial port (prt1):- db-9m pc compatible- rs-232 only- hardware handshaking

• application serial ports (prt1, prt2)- application port to db-9m pc compatible connector is supplied- rs232/422/485 jumper se-lectable- rs232 handshaking configurable- 500v optical isolation from backplane

ordering information