ProSoft Technology MVI56-BAS - Manual (Page 216)

Reference MVI56-BAS ♦ ControlLogix Platform
User Manual BASIC Module (DB/BAS Compatible)
Page 216 of 234 ProSoft Technology, Inc.
December 13, 2011
11.1.3 Functional Specifications
The BASIC programs are stored in the MVI56-BAS Compact Flash disk allowing
the user to easily backup the BASIC programs to another Compact Flash disk or
to a local PC. Up to 24065 Bytes of RAM 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 create the BASIC programs using the command line, then
save it to Compact Flash, or create 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.
Supports BASIC-52 Programming language
Stores BASIC programs on Compact Flash 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 transfer data 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 DH-485 Devices
Rockwell Automation AIC+ device is required (user-supplied)
Ladder logic is required to transfer data between the ControlLogix processor
and remote data file or common interface file