ProSoft Technology MVI56-BAS - Manual (Page 218)

Reference MVI56-BAS ♦ ControlLogix Platform
User Manual BASIC Module (DB/BAS Compatible)
Page 218 of 234 ProSoft Technology, Inc.
December 13, 2011
DH-485 Communications
The DH-485 port allows the MVI56-BAS to interface with DH-485 networks. This
port is not directly DH-485 compatible as it requires the Rockwell Automation
AIC+ module (user-supplied). Further, the setup jumper must be OFF for the DH-
485 driver to operate correctly. The default parameters are:
Baud Rate 19200
Node 1
Maximum Node Address 31
These parameters can be changed using the MODE statement.
Refer to Using DH-485 Communications (page 93) for more information about
using the DH-485 protocol.
BASIC Program Transfer
If the user quits the BASIC application entering "EXIT" while connected to the
program port (PRT1), the DH-485 port allows the user to access the MVI56-BAS
C: drive (Compact Flash) where the programs are stored in DOS. The user can
move BASIC programs from the PC to the MVI56-BAS or vice versa using this
port.
PRT1
Program Port
ASCII Communication
PRT1 is the default BASIC program port. This means that all command line
statements should be entered using an ASCII terminal software connected to
PRT1. The default parameters are 19200 baud rate, 8 bits per character, no
parity and one stop bit. If the setup jumper is installed, then the PRT1 parameters
cannot be changed. If the setup jumper is removed, the MODE command can
change the communication parameters.
An RJ45 to DB-9 adapter cable is required (supplied with the MVI56-BAS
module) to use PRT1.
The PRT1 port also can be used to send and receive serial data, interfacing the
ControlLogix processor with ASCII devices such as printers and bar readers as
will be described later in this manual.
PRT2
DF1 Communication
ASCII Communication
The PRT2 port can be used to send and receive serial data, interfacing the
ControlLogix processor with ASCII devices such as printers and bar code
readers as will be described later in this manual. The default parameters are
19200 baud, 8 bits per character, no parity and one stop bit. The setup jumper
has no effect on this port.
An RJ45 to DB-9 adapter cable is required (supplied with the MVI56-BAS
module) to use PRT2.